Faculty Profiles - ISHIHARA Daisuke

Other Link： https://www.jstage.jst.go.jp/article/jasse/11/1/11_201/_pdf

Fabricable polymer micromachined insect mimetic wing for pico air vehicles Reviewed International journal

Shankar V., Shirakawa N., Ishihara D.

2024 IEEE 19th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2024 2024.01

Algorithm Selection Method Based on Coupling Strength for Partitioned Analysis of Structure-Piezoelectric-Circuit Coupling Reviewed International journal

Ishihara D., Takayama N.

CMES - Computer Modeling in Engineering and Sciences 138 ( 2 ) 1237 - 1258 2024.01

Fabricable design solution of insect-mimetic micro elastic wings using polymer micromachining

1F10 2023.12

Vein–Membrane Interaction in Cambering of Flapping Insect Wings Reviewed International journal

Ishihara D., Onishi M., Sugikawa K.

Biomimetics 8 ( 8 ) 571 - 571 2023.12

Computational fluid–structure interaction framework for passive feathering and cambering in flapping insect wings Reviewed International journal

Ishihara D., Onishi M.

International Journal for Numerical Methods in Fluids 96 ( 4 ) 435 - 481 2023.11

共振駆動される昆虫規範型微小飛行体の羽ばたき飛行性能評価

白川和, 石破和弥, 木村元宣, 石原大輔

[No.23-49] 日本機械学会第14回マイクロ・ナノ工学シンポジウム予稿集〔2023.11.6－9，熊本〕 2023.11

圧電-逆圧電-構造連成現象の動解析における分離反復型解法の収束特性

日浦巧稀, 岩丸直樹, 相川昇壱, 石原大輔

計算力学講演会講演論文集[No.23-24] 日本機械学会第 36 回計算力学講演会（CMD2023） ( 一般社団法人日本機械学会 ) OS-0202 2023.10

Numerical Analysis of Insect Flight Maneuverability Using Feedback Control Model Reviewed

Kaede Sugikawa, Minato Onishi, Daisuke Ishihara

Proceedings of the 42nd JSST Annual International Conference on Simulation Technology 155 - 158 2023.08

流体中で振動する圧電バイモルフにおける流体-構造-圧電- 電気回路連成現象のハイブリッド型強連成解法

三笘征弘, 野崎隼之介, 石原大輔

計算工学講演会論文集 G-01-04 2023.05

First Prototype of Polymer Micromachined Flapping Wing Nano Air Vehicle Reviewed International journal

Rashmikant , Suetsugu R., Onishi M., Ishihara D.

Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS) 2023-January 534 - 537 2023.03

Importance of Three-Dimensional Piezoelectric Coupling Modeling in Quantitative Analysis of Piezoelectric Actuators Reviewed International journal

Ishihara D., Ramegowda P.C., Aikawa S., Iwamaru N.

CMES - Computer Modeling in Engineering and Sciences 136 ( 2 ) 1187 - 1206 2023.02

Iterative design window search for polymer micromachined flapping-wing nano air vehicles using nonlinear dynamic analysis Reviewed International journal

Rashmikant , Ishihara D.

International Journal of Mechanics and Materials in Design 19 ( 2 ) 407 - 429 2023.01

Computational control for strongly coupled structure, electric, and fluid systems Reviewed International journal

Shankar V., Ramegowda P.C., Ishihara D.

International Journal for Computational Methods in Engineering Science and Mechanics 24 ( 2 ) 91 - 106 2023.01

Convergence Property of Partitioned Iterative Method for Dynamic Analysis of Coupled Direct Piezoelectric, Inverse Piezoelectric, and Structural Phenomena

HIURA Koki, IWAMARU Naoki, AIKAWA Shoichi, ISHIHARA Daisuke

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2023.36 ( 0 ) OS-0202 2023.01

Authorship：Last author,　Corresponding author Language：Japanese Publishing type：Research paper (other academic)

In a micro piezoelectric drive system for insect-mimetic flapping wing nano air vehicles, a small translational displacement of the piezoelectric bimorph is converted to a large angular displacement using a transmission based on the geometric nonlinearity of large bending of the elastic hinges. The piezoelectric bimorph and the transmission strongly interact with each other due to the scale effect. Furthermore, in the piezoelectric bimorph, the direct and inverse piezoelectric effects are coupled with each other. Hence, in the micro piezoelectric drive system, the direct-piezoelectric, inverse-piezoelectric, and structural coupling occurs. In this study, a finite element analysis method based on the block successive under-relaxation method is proposed for the dynamic analysis of this triply coupled phenomena, and the dependency of the convergence property on the relaxation coefficient is investigated.

DOI： 10.1299/jsmecmd.2023.36.os-0202

Other Link： https://www.jstage.jst.go.jp/article/jsmecmd/2023.36/0/2023.36_OS-0202/_pdf

Accurate finite element modeling of multilayered flexible piezoelectric energy harvesting devices with strong coupling of structure, piezoelectricity, and circuit Reviewed International journal

Ramegowda P.C., Ishihara D.

International Journal for Computational Methods in Engineering Science and Mechanics 25 ( 3 ) 137 - 151 2023.01

Computational evaluation of flight performance of flapping-wing nano air vehicles using hierarchical coupling of nonlinear dynamic and fluid-structure interaction analyses Reviewed International journal

Rashmikant , Onishi M., Sugikawa K., Ishihara D.

Engineering Applications of Computational Fluid Mechanics 17 ( 1 ) 2023.01

Fabricable design solution of insect-mimetic micro elastic wings using polymer micromachining

SHIRAKAWA Nagi, SHANKAR Vinay, KIMURA Motonobu, ISHIHARA Daisuke

The Proceedings of the JSME Conference on Frontiers in Bioengineering ( The Japan Society of Mechanical Engineers ) 2023.34 ( 0 ) 1F10 2023.01

Numerical Analysis of Insect Flight Maneuverability Using Feedback Control Model Reviewed International journal

石原大輔

Proceedings of the 42th JSST Annual International Conference on Simulation Technology - 155 - 158 2023.01

ポリマー微細加工された昆虫規範型羽ばたき装置による微小翼の共振駆動

石破和弥, 末次亮太郎, 木村元宣, 大西南斗, 石原大輔

第13回マイクロ・ナノ工学シンポジウム予稿集 2022.11

ポリマー微細加工による多層中空構造を用いた昆虫規範型飛行体用トランスミッション

木村元宣, 末次亮太郎, 上尾純平, 石原大輔

第13回マイクロ・ナノ工学シンポジウム予稿集 2022.11

昆虫飛行操縦性における流体-翼-胴体連成のフィードバック制御付き分離型解法

大西南斗, 石原大輔

計算力学講演会講演論文集 ( 一般社団法人日本機械学会 ) 2022.11

流体中で振動する圧電バイモルフにおける流体-構造-圧電-回路連成現象の分離反復型解法

三笘征弘, 野崎駿之介, 石原大輔

計算力学講演会講演論文集 ( 一般社団法人日本機械学会 ) 2022.11

マイクロ圧電駆動システムの圧電-逆圧電-構造連成現象に対する分離反復型解法

岩丸直樹, 相川昇壱, 大西南斗, 石原大輔

計算力学講演会講演論文集 ( 一般社団法人日本機械学会 ) 2022.11

ミクロスケール接触変形・電流連成解析による接触電気抵抗特性の基礎的検討

二保知也, 石原大輔

計算力学講演会講演論文集 ( 一般社団法人日本機械学会 ) 2022.11

Fluid-structure interaction design of the polymer micromachined insect-inspired flapping wings Reviewed

Vinay Shankar, Minato Onishi, Daisuke Ishihara

Proceedings of the 41st JSST Annual International Conference on Simulation Technology 2022.09

Finite element analysis of multilayered flexible piezoelectric energy harvesting devices using strongly coupled structure-piezoelectric-circuit interaction Invited Reviewed

Prakasha Chigahalli Ramegowda, Daisuke Ishihara, Rei Takata, Naoto Takayama, Tomoya Niho, Tomoyoshi Horie

Proceedings of the 41st JSST Annual International Conference on Simulation Technology 2022.09

Effect of wing’s mass distribution on the aerodynamic performance in insect flapping wings Reviewed

Minato Onishi, Daisuke Ishihara

Proceedings of the 41st JSST Annual International Conference on Simulation Technology 2022.09

Partitioned-Monolithic Hybrid Strongly Coupled Method for Structure-Piezoelectric-Circuit Interaction in Piezoelectric Energy Harvesting Reviewed

Shunnosuke Nozaki, Daisuke Ishihara, Tomoya Niho

Proceedings of the 41st JSST Annual International Conference on Simulation Technology 2022.09

Determination of Resonant Mechanism of Polymer Micromachined Insect Inspired Flapping Device Using Finite Element Modal Analysis Reviewed

Kazuya Ishiba, Minato Onishi, Daisuke Ishihara

Proceedings of the 41st JSST Annual International Conference on Simulation Technology 2022.09

Flight performance evaluation of polymer micromachined flapping-wing nano air vehicle using fluid-structure interaction analysis Reviewed

Rashmi Kant, Daisuke Ishihara, Minato Onishi

Proceedings of the 41st JSST Annual International Conference on Simulation Technology 2022.09

連成解析・連携解析 Invited

山田知典, 澤田有弘, 石原大輔

計算工学 ( 日本計算工学会 ) 27 ( 3 ) 4014 (8) - 4015 (8) 2022.08

圧電エネルギーハーベスティングにおける構造－圧電－回路連成現象の分離型-一体型ハイブリッド強連成解法の提案

野崎隼之介, 石原大輔, 二保知也

計算工学講演会論文集 2022.06

2.5-dimensional insect-mimetic wing model for flapping wing nano air vehicles and design window search for manufacturable solutions using polymer micromachining Reviewed International journal

Shankar V., Matsuo R., Onishi M., Ishihara D.

17th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2022 306 - 311 2022.01

Computational Approach for the Fluid-Structure Interaction Design of Insect-Inspired Micro Flapping Wings Reviewed International journal

Ishihara D.

Fluids 7 ( 1 ) 2022.01

Partitioned method with a feedback control for the fluid-wing-body interaction in the insect flight maneuver

ONISHI Minato, ISHIHARA Daisuke

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2022.35 ( 0 ) 12-07 2022.01

Authorship：Last author,　Corresponding author Language：Japanese Publishing type：Research paper (other academic)

This study proposed a partitioned method with a feedback control to analyzed maneuvering of insects during flapping flight. This method decomposed the insect flapping flight into wing and body subsystems and then coupled them using feedback control. In the wing subsystem, the strong coupling of the flexible wings and surrounding fluid was accurately analyzed using the finite element method to obtain the thrust forces acting on the insect’s body. The resulting thrust forces were passed from the wing subsystem to the body subsystem, and then rigid body motion was analyzed in the body subsystem. The controlling of wing subsystem is done by the feedback control using the body angular displacement and velocity. The fundamental performance of the proposed method is demonstrated from the comparison between the present results and the actual observation of maneuver.

DOI： 10.1299/jsmecmd.2022.35.12-07

Other Link： https://www.jstage.jst.go.jp/article/jsmecmd/2022.35/0/2022.35_12-07/_pdf

One-wing polymer micromachined transmission for insect-inspired flapping wing nano air vehicles Reviewed

Rashmikant , Ishihara D., Suetsugu R., Ramegowda P.C.

Engineering Research Express 3 ( 4 ) 2021.12

Comparative study on linear and quadratic solid direct-piezoelectric solvers with shell inverse-piezoelectric solver to analyze a thin piezoelectric bimorph device Reviewed

Prakasha Chigahalli Ramegowda, Daisuke Ishihara

Proceedings of the 40th JSST Annual International Conference on Simulation Technology 406 - 409 2021.09

Importance of 3-D piezoelectric coupled analysis in evaluation of thin piezoelectric bimorph deformation Reviewed

Shoichi Aikawa, Daisuke Ishihara, Naoki Iwamaru, Prakasha Chigahalli Ramegowda

Proceedings of the 40th JSST Annual International Conference on Simulation Technology 404 - 405 2021.09

Comparative study on partitioned iterative algorithms for coupled multiple phenomena in piezoelectric energy harvesters Reviewed

Naoto Takayama, Daisuke Ishihara, Prakasha Chigahalli Ramegowda, Shunsuke Nozaki

Proceedings of the 40th JSST Annual International Conference on Simulation Technology 378 - 379 2021.09

Passive motions and aerodynamic performance of insect’s flapping wings simulated using the pixel wing model and the strong coupling method Reviewed

Minato Onishi, Daisuke Ishihara

Proceedings of the 40th JSST Annual International Conference on Simulation Technology 374 - 377 2021.09

Comparative study of strongly coupled fluid and structure systems with computational control Reviewed

Vinay Shankar, Daisuke Ishihara

Proceedings of the 40th JSST Annual International Conference on Simulation Technology 370 - 373 2021.09

Strongly coupled partitioned iterative method for the structure–piezoelectric–circuit interaction using hierarchical decomposition Reviewed

Ishihara D., Takata R., Ramegowda P.C., Takayama N.

Computers and Structures 253 2021.09

抵抗スポット溶接における引張せん断強度の接触変形・電流・熱伝導3 連成解析

二保知也, 金城喜己, 石原大輔

計算工学講演会論文集 26 A-11-06 (3pages) 2021.05

圧電エネルギーハーベスティングの複合・階層的な構造–圧電–電気回路連成現象に対する分離反復型解法の比較検討

高山直人, 石原大輔, プラカシャチガハリラメゴウダ, 野崎隼之介

計算工学講演会論文集 26 A-11-03 (4pages) 2021.05

圧電バイモルフ変形評価における３次元圧電-逆圧電連成解析の重要性

相川昇壱, 石原大輔, 岩丸直樹, プラカシャチガハリラメゴウダ

計算工学講演会論文集 26 A-11-02 (3pages) 2021.05

昆虫羽ばたき翼に生じる受動的キャンバーのピクセル翼モデルによる流体構造連成解析

大西南斗, 石原大輔

計算工学講演会論文集 26 A-10-02 (3pages) 2021.05

Improved Design of Polymer Micromachined Transmission for Flapping Wing Nano Air Vehicle Reviewed International journal

Rashmikant , Ishihara D., Suetsugu R., Murakami S., Ramegowda P.C.

Proceedings of the 16th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2021 1320 - 1325 2021.04

Hierarchical modeling and finite element analysis of piezoelectric energy harvester from structure-piezoelectric-circuit interaction Reviewed

Ramegowda P.C., Ishihara D., Takata R., Horie T.

World Congress in Computational Mechanics and ECCOMAS Congress 1200 2021.01

Triply coupled analysis method for thin flexible piezoelectric bimorph in fluid Reviewed International journal

Ramegowda P.C., Ishihara D., Takata R., Niho T., Horie T.

8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019 470 - 480 2021.01

Coupled solid piezoelectric and shell inverse-piezoelectric analysis using partitioned method for thin piezoelectric bimorph with metal layers Reviewed International journal

Ishihara D., Ramegowda P.C., Takata R., Niho T., Horie T.

8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019 451 - 457 2021.01

Performance evaluation of the pixel wing model for the insect wing's camber Invited Reviewed

Onishi Minato, Ishihara Daisuke

日本シミュレーション学会英文誌 8 ( 2 ) 163 - 172 2021.01

炭素繊維複合材およびドライクロスの誘導加熱解析 Reviewed

中村俊太, 堀江知義, 二保知也, 石原大輔

日本AEM学会誌 ( 日本AEM学会 ) 29 ( 3 ) 576 - 582 2021.01

Language：Japanese Publishing type：Research paper (scientific journal)

Heating analysis of CFRP and carbon fiber dry cloth for aircraft structures, which is expected for a medium-sized aircraft, is performed. Comparing the temperature of test pieces between numerical and experimental results, validity of both experimental and analytical methods is confirmed for both aluminum and carbon dry cloth sheet. Analysis is made for the layers of carbon dry cloth sheet and CFRTP plate.

DOI： 10.14243/jsaem.29.576

Other Link： https://ci.nii.ac.jp/naid/130008142891

A Study on Partitioned Iterative Method for Piezoelectric, Inverse Piezoelectric and Structural Coupling in Electro-Mechanical Systems

AIKAWA Shoichi, ISHIHARA Daisuke, KUMAGAI Takeru, IWAMARU Naoki, RAMAGOWDA P. C., OONISHI Minato

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2021.34 ( 0 ) 249 2021.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

In micro-electro-mechanical systems using piezoelectric bimorph actuators such as FWNAV, small displacements given by the actuators can be magnified using a transmission using the flexible structure. Hence, in these systems, coupling among the direct and inverse piezoelectric effects, and the flexible structure occurs. In this study, a partitioned iterative method is proposed based on the block SUR algorithm for this strongly coupled problem, and the basic performances are demonstrated in numerical examples.

DOI： 10.1299/jsmecmd.2021.34.249

Other Link： https://www.jstage.jst.go.jp/article/jsmecmd/2021.34/0/2021.34_249/_pdf

Electromagnetic and Thermal Conduction Coupled Analysis for Induction Heating of Carbon Fiber Reinforced Plastic

NIHO Tomoya, NAKAMURA Shunta, ISHIHARA Daisuke, HORIE Tomoyoshi, KAMIHARA Nobuyuki, SHITANI Tohru

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2021.34 ( 0 ) 130 2021.01

Language：Japanese Publishing type：Research paper (scientific journal)

Bonding and forming of carbon fiber reinforced plastic by induction heating are required for medium-sized aircraft manufacturing. In this paper, electromagnetic and thermal conduction coupled finite element analysis method is described for induction heating of carbon fiber dry cloth. Experiments of induction heating are also performed to discuss the validity of analysis method and experimental method. Comparing the temperature of test pieces between analysis and experimental results, validity of both methods is confirmed for both aluminum sheet and carbon fiber dry cloth.

DOI： 10.1299/jsmecmd.2021.34.130

Other Link： https://www.jstage.jst.go.jp/article/jsmecmd/2021.34/0/2021.34_130/_pdf

Effect of the passive cambering on the aerodynamic performance in insect’s flapping wings

ONISHI Minato, ISHIHARA Daisuke

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2021.34 ( 0 ) 176 2021.01

Authorship：Last author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

Any shape change of insect’s wings during their flapping motion will be passively caused by external forces such as the inertial and aerodynamic forces because the wings have no interior muscle. The camber deformation, which is the focus of this study, plays an important role in the aerodynamic performance of the insect’s flapping flight. In this study, the effect of passive cambering is investigated using a fluid-structure interaction analysis and a pixel wing model using only structured shell elements, which adequately simulates the camber deformation in actual insects.

DOI： 10.1299/jsmecmd.2021.34.176

Other Link： https://www.jstage.jst.go.jp/article/jsmecmd/2021.34/0/2021.34_176/_pdf

Comparative Study on Coupling Algorithms for Structure-Piezoelectric-Circuit Interaction in Piezoelectric Energy Harvesters

TAKAYAMA Naoto, ISHIHARA Daisuke, RAMEGOEDA Prakash Chigahalli, ONISHI Minato

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2021.34 ( 0 ) 210 2021.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

In recent years, energy harvesting from environment has attracted much attention. In particular, piezoelectric bimorph energy harvesters, which are effective as an energy source for MEMS, have been widely studied. In piezoelectric energy harvesters, structure, piezoelectricity, and circuit are strongly coupled in a complicated and hierarchical manner. For the three-field coupling phenomena, unlike two-field coupling phenomena, various partitioned algorithms are possible. Hence, in this study, we develop three partitioned algorithms using hierarchical decomposition: In the first algorithm, all fields are solved implicitly or strongly coupled using the block Gauss-Seidel (BGS) method (fully strong coupling algorithm). In the second algorithm, the structure-piezoelectric interaction is solved implicitly or strongly coupled using the BGS method, and the circuit is solved explicitly or weakly coupled (partially strong coupling algorithm). In the third algorithm, all fields are solved explicitly or weakly coupled (fully weak coupling algorithm). These methods are applied to a typical piezoelectric harvester, namely a cantilevered piezoelectric bimorph, and their performances such as the accuracy and the computational cost are discussed.

DOI： 10.1299/jsmecmd.2021.34.210

Other Link： https://www.jstage.jst.go.jp/article/jsmecmd/2021.34/0/2021.34_210/_pdf

A Design Window Search Using Nonlinear Dynamic Simulation for Polymer Micro-machined Transmission in Insect-inspired Flapping wing Nano Air Vehicles Reviewed International journal

Rashmikant , Ishihara D.

2021 6th International Conference on Robotics and Automation Engineering, ICRAE 2021 162 - 167 2021.01

HIERARCHICALLY DECOMPOSED FINITE ELEMENT METHOD FOR THE COUPLED FOUR FIELDS OF THE FLUID-STRUCTURE-PIEZOELECTRIC-CIRCUIT INTERACTION Reviewed International journal

Ramegowda P.C., Ishihara D.

9th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2021 2021.01

COMPUTATIONAL FLUID-STRUCTURE INTERACTION FRAMEWORK FOR SIMULATING CHARACTERISTIC DEFORMATIONS IN INSECT FLAPPING WINGS Reviewed International journal

Onishi M., Ishihara D.

9th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2021 2021.01

圧電エネルギーハーベスティングにおける構造‐圧電‐回路連成現象の分離反復型解析

石原大輔, 高田黎, プラカシャチガハリラメゴウダ, 高山直人

日本機械学会計算力学部門 CMD2020計力スクウェア研究報告集 A-TS 01-27 Report No. 2-12, 5pages 2020.12

昆虫羽ばたき翼に生じる特徴的弾性変形の流体構造連成解析

大西南斗, 大戸悠司, 石破和弥, 石原大輔

日本機械学会計算力学部門 CMD2020計力スクウェア研究報告集 A-TS 01-27 Report No. 2-13, 5pages 2020.12

Polymer Micromachined Transmission for Insect-Inspired Flapping Wing Nano Air Vehicles* Reviewed

Ishihara D., Murakami S., Ohira N., Ueo J., Takagi M., Urakawa K., Horie T.

15th IEEE International Conference on Nano/Micro Engineered and Molecular System, NEMS 2020 176 - 179 2020.09

Finite element analysis of a thin piezoelectric bimorph with a metal shim using solid direct-piezoelectric and shell inverse-piezoelectric coupling with pseudo direct-piezoelectric evaluation Reviewed

Ramegowda P.C., Ishihara D., Takata R., Niho T., Horie T.

Composite Structures 245 2020.08

Hierarchically decomposed finite element method for a triply coupled piezoelectric, structure, and fluid fields of a thin piezoelectric bimorph in fluid Reviewed

Ramegowda P.C., Ishihara D., Takata R., Niho T., Horie T.

Computer Methods in Applied Mechanics and Engineering 365 2020.06

炭素繊維複合材およびドライクロスの誘導加熱解析

中村俊太，堀江知義，二保知也，石原大輔

第32回「電磁力関連のダイナミクス」シンポジウム講演論文集 65 - 70 2020.05

電気結合係数の大きな圧電材料によるバイモルフ型アクチュエータに対する解析方法の比較検討

石原大輔，熊谷武尊，相川昇壱，プラカシャチガハリラメゴウダ，二保知也，堀江知義

第32回「電磁力関連のダイナミクス」シンポジウム講演論文集 75 - 76 2020.05

Element-quality-based stiffening for the pseudoelastic mesh-moving technique Reviewed

Ishihara D., Goto A., Onishi M., Horie T., Niho T.

International Journal of Computational Methods 17 ( 4 ) 2020.05

Fluid-structure and electric interaction analysis of piezoelectric flap in a channel using a strongly coupled FEM scheme Reviewed

Ramegowda P.C., Ishihara D., Takata R., Niho T., Horie T.

Proceedings of the 6th European Conference on Computational Mechanics: Solids, Structures and Coupled Problems, ECCM 2018 and 7th European Conference on Computational Fluid Dynamics, ECFD 2018 382 - 393 2020.01

Partitioned Iterative Method for Inverse Piezoelectric–Direct Piezoelectric–Electric Circuit Interaction Reviewed

ISHIHARA Daisuke, TAKATA Rei, Prakasha Chigahalli Ramegowda

Transactions of the Japan Society for Computational Engineering and Science ( JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE ) 2020 ( 0 ) 20200015 - 20200015 2020.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

Piezoelectric bimorphs in actuator and sensor applications are usually connected to an external circuit. The mechanical behavior of the piezoelectric bimorph is affected by charge from the circuit, and it behaves as a kind of capacitor in the circuit. Therefore, the interaction between the electrical circuit and piezoelectric bimorph forms the multiphysics inverse piezoelectric – direct piezoelectric – circuit interaction problem. This multiphysics coupling should be taken into account in the design process of the actuators and sensors using the piezoelectric bimorph. Here, the novel finite element analysis method is proposed for this inverse piezoelectric - piezoelectric - circuit coupled problem. The inverse piezoelectric and direct piezoelectric analyses are performed using the finite element method with the shell and solid elements, respectively, in order to consider the thin composite structure. Therefore, the transformation method between the solid and shell variables are used. The description of the circuit is a single degree of freedom. The coupled equations for the direct piezoelectric – circuit interaction are proposed from the continuous conditions for the electric potential and the charge. The coupled algorithm is based on the block Gauss-Seidel method. In the inverse piezoelectric analysis, the homogenization method about the bending rigidity and the mass is used. In the direct piezoelectric analysis, the pseudo-piezoelectric evaluation method for the conductor is used. Finally, it is demonstrated that the proposed method can analyze the coupling phenomena in the RC circuit and the shunt damping application accurately.

DOI： 10.11421/jsces.2020.20200015

Other Link： https://ci.nii.ac.jp/naid/130007885624

Modeling the cambering of the flapping wings of an insect using rectangular shell finite elements Reviewed

Onishi Minato, Ishihara Daisuke

日本シミュレーション学会英文誌 7 ( 1 ) 181 - 188 2020.01

Performance Evaluation of Numerical Finite Element Coupled Algorithms for Structure-Electric Interaction Analysis of MEMS Piezoelectric Actuator Reviewed

Ramegowda P., Ishihara D., Niho T., Horie T.

International Journal of Computational Methods 16 ( 7 ) 2019.11

Modeling of cambering in insect’s flapping wings using finite element shell elements Reviewed

Minato Onishi, Daisuke Ishihara

Proceedings of the 38th JSST Annual International Conference on Simulation Technology 271 - 274 4pages 2019.11

Computational control for strongly coupled Piezoelectric-Structure-Interaction Reviewed

Vinay Shankar, Daisuke Ishihara, Prakasha Chigahalli Ramegowda, Rei Takata, Tomoyoshi Horie

Proceedings of the 38th JSST Annual International Conference on Simulation Technology 275 - 278 4pages 2019.11

昆虫羽ばたき飛行の特徴的な翼先端軌跡における流体構造連成現象の役割 Invited

石原大輔

昆虫と自然 ( ニュー・サイエンス社 ) 54 ( 8 ) 32 - 34 2019.07

A novel coupling algorithm for the electric field–structure interaction using a transformation method between solid and shell elements in a thin piezoelectric bimorph plate analysis Reviewed

Ramegowda P., Ishihara D., Niho T., Horie T.

Finite Elements in Analysis and Design 159 33 - 49 2019.07

A pixel modeling of the cambering in insect flapping wings

331 - 332 2019.06

Cycles of triply coupled mechanical contact, current, and thermal conduction phenomena during resistance spot welding Reviewed

Horie T., Niho T., Hayashi N., Ishihara D.

Welding in the World 63 ( 3 ) 701 - 713 2019.05

薄く柔軟な複合材圧電バイモルフのソリッド圧電‐シェル逆圧電分離反復型解法

石原大輔, プラカシャチガハリラメゴウダ, 高田黎, 二保知也, 堀江知義

計算工学講演会論文集 24 E-10-01 (2pages) 2019.05

3枚重ね抵抗スポット溶接の構造・電流・熱伝導3 連成現象および接合強度におよぼす鋼板材質・板組の影響

二保知也, 金城喜己, 石原大輔, 堀江知義

計算工学講演会論文集 24 E-12-01 (2pages) 2019.05

A Computational Study on the Fluid-Structure Interaction Mechanism in Insect Flapping Wings Reviewed

Daisuke Ishihara

Proceedings of The International Conference on Computational & Experimental Engineering and Sciences 21 ( 3 ) 66 - 66 2019.05

Proposal of Finite Element Method for Structure-Piezoelectric-Circuit Coupled Problems

TAKATA Rei, ISHIHARA Daisuke, RAMEGOWDA Prakasha Chigahalli, NIHO Tomoya, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2019 ( 0 ) 2019.01

Language：Japanese Publishing type：Research paper (other academic)

A piezoelectric bimorph for actuators and sensors is usually connected to a circuit. The piezoelectric bimorph is affected by charge from the circuit in its mechanical behavior, and it also plays a role of a capacitor in the circuit. Therefore, the coupling of the piezoelectric bimorph and circuit as well as the structure - piezoelectric coupling should be taken into account in the design process of the actuators and sensors using the piezoelectric bimorph. Here, the novel finite element analysis method is proposed for this structure – piezoelectric – circuit coupled problem. Structural and piezoelectric analyses are performed using the finite element method with the shell and solid elements, respectively. Circuit analysis is a single degree of freedom. The coupled equations for the piezoelectric – circuit coupling is proposed from the continuous conditions for the electric potential and charge. The coupled algorithm is based on the block Gauss-Seidel method and a novel transformation method between the solid and shell variables. In the structural analysis, the rule of mixtures about the bending rigidity and the mass is used. In the piezoelectric analysis, the pseudo-piezoelectric evaluation method is used.

DOI： 10.1299/jsmecmd.2019.32.276

Other Link： https://ci.nii.ac.jp/naid/130007817403

Pseudoelastic mesh–moving using a general scenario of the selective mesh stiffening Invited Reviewed

Ishihara Daisuke, Goto Atsushi, Onishi Minato, Niho Tomoya, Horie Tomoyoshi

日本シミュレーション学会英文誌 6 ( 1 ) 67 - 74 2019.01

Deformation effect on triply coupled analysis of contact deformation, electric current and thermal conduction for resistance spot welding

NIHO Tomoya, YI Xinyu, ISHIHARA Daisuke, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2019 ( 0 ) 2019.01

Language：Japanese Publishing type：Research paper (other academic)

Resistance spot welding is widely used in manufacturing industries such as automotive industry. In this paper, we propose electric current analysis and thermal conduction analysis with deformation effect for resistance spot welding analysis. Effect of deformation on bonding strength and triply coupled effect for contact deformation, electric current and thermal conduction are discussed.

DOI： 10.1299/jsmecmd.2019.32.227

Other Link： https://ci.nii.ac.jp/naid/130007817379

Partitioned method of insect flapping flight for maneuvering analysis Reviewed

Onishi M., Ishihara D.

CMES - Computer Modeling in Engineering and Sciences 121 ( 1 ) 145 - 175 2019.01

A coupled finite element analysis approach combining in-house and general-purpose codes Reviewed

Horie T., Niho T., Ishihara D.

IUTAM Bookseries 35 117 - 129 2019.01

Solid piezoelectric - shell inverse piezoelectric partitioned analysis method for thin piezoelectric bimorph with conductor layers Reviewed

TAKATA Rei, ISHIHARA Daisuke, Ramegowda Prakasha Chigahalli, NIHO Tomoya, HORIE Tomoyoshi

Transactions of the Japan Society for Computational Engineering and Science ( JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE ) 2019 ( 0 ) 20190011 - 20190011 2019.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

Piezoelectric bimorph for actuators and sensors is usually thin and includes conductor layers such as the electrode and the shim plate. Therefore, this study deals with the coupled piezoelectric and inverse-piezoelectric analysis of thin piezoelectric bimorph with the conductor layers. Solid elements can describe the various types of distributions of electric potential along the thickness, while shell elements are more appropriate to analyze the thin structures. Therefore, instead of using piezoelectric solid elements or piezoelectric shell elements for both the piezoelectric and inverse-piezoelectric analyses, the solid and shell elements are used to simulate the electrical and structural fields, respectively. The coupled algorithm is based on the block Gauss-Seidel method and the transformation method between the solid and shell variables. In the structural analysis, the rule of mixtures for the bending rigidity and the mass is used. A pseudo-piezoelectric evaluation method for the conductor is proposed in order to use the existing programs for the piezoelectric and inverse-piezoelectric analyses without any modification. Finally, it is demonstrated that the proposed method shows very accurate potential distributions in the actuator and sensor modes of the thin piezoelectric bimorph with the conductor layers.

DOI： 10.11421/jsces.2019.20190011

Kyutacar

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85068835345&origin=inward

A pixel modeling of the cambering in insect flapping wings

Onishi Minato, Ishihara Daisuke, Niho Tomoya, Horie Tomoyoshi

NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan ( National Committee for IUTAM ) 65 ( 0 ) 2019.01

Language：Japanese Publishing type：Research paper (other academic)

The cambering in the insect's flapping wing plays an important role for the improvement of the aerodynamic performance. In this study, the pixel model is proposed for the cambering in the insect flapping wings. In the proposed model, the role of the vein of membrane is given by the pseudo elastic materials The fundamental performance of the proposed model is demonstrated in the comparison with the previous model using the beam and shell element.

DOI： 10.11345/japannctam.65.0_331

Other Link： https://ci.nii.ac.jp/naid/130008100946

Finite element modeling of flexible piezoelectric energy harvester operating in air

RAMEGOWDA Prakasha Chigahalli, ISHIHARA Daisuke, TAKATA Rei, NIHO Tomoya, HORIE Tomoyoshi

計算力学講演会講演論文集 ( 一般社団法人日本機械学会 ) 2019 ( 0 ) 2019.01

Language：Japanese Publishing type：Research paper (other academic)

Piezoelectric energy harvesting from the mechanical vibrations has attracted considerable research interest in the last decade. This work presents a finite element modeling of forced vibration of flexible piezoelectric devices (FPED). The successful design of the FPED depends on the identification of the optimal geometry, material configurations, and loading conditions to achieve maximum power efficiency at a specific band of excitation frequencies. A piezoelectric energy harvesting (PEH) process from the mechanical vibration takes the form of two-way coupling between piezoelectric and inverse piezoelectric effect, while the piezoelectric energy harvesting from the ocean waves takes the form of three-way coupling between fluid, piezoelectric, and inverse piezoelectric effects. There are some experimental and theoretical studies about piezoelectric energy harvesting from the mechanical vibrations as-well as ocean waves in literature. Meantime, performing design optimization via experimental studies is very expensive. An accurate FE modeling of the coupling effects between the fluid, piezoelectric, and inverse piezoelectric effect will reduce the cost-effective design optimization and increase the energy efficiency of the PEH. In the present study, the FE analysis of FEPD is presented. The result obtained with the FE model is compared with the experimental model reported in the literature.

DOI： 10.1299/jsmecmd.2019.32.279

Other Link： https://ci.nii.ac.jp/naid/130007817401

Role of fluid-structure interaction in generating the characteristic tip path of a flapping flexible wing Reviewed

Ishihara D.

Physical Review E 98 ( 3 ) 2018.09

A partition model for the computer simulation of insect flight maneuvers Reviewed

24 - 27 4pages 2018.09

General scenario of the selective mesh stiffening in the pseudoelastic mesh-moving Reviewed

20 - 23 4pages 2018.09

Coupled Finite Element Analysis Model of Structural and Electrical Coupled Analysis for Electrical Contact Resistance

2018.07

A study on the partition method for the maneuverability of insect's flapping flight

ONISHI Minato, ISHIHARA Daisuke, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Language：Japanese Publishing type：Research paper (other academic)

Insects have developed their high-performance maneuverability using flapping flight in the process of their evolution. In this study, a partitioned method based on our partition model for their flapping flight, which consists of the subsystems of the wings, the body and the control, is proposed to analyze their maneuverability. Here, the proposed method is applied for a maneuver, which is assumed as the perturbation from the static hovering state. In this case, a specific analysis procedure reduced from the proposed method is the one way coupling from the wing to body subsystems, i.e. the insect flapping wings are analyzed using a finite element method for the fluid-structure interaction, the resulted thrust force acts on the insect's body, and its motion is calculated using the equation of motion of a rigid body. The fundamental performance of the proposed method is demonstrated from the comparison between the present results and the actual observation with respect to the yaw, roll, and pitch as three basic modes of maneuver.

DOI： 10.1299/jsmecmd.2018.31.225

Other Link： https://ci.nii.ac.jp/naid/130007653641

Polymer-micromachining and driving test of a transmission for insect-like flyer

URAKAWA Kohei, ISHIHARA Daisuke, TAKAGI Masakatsu, MURAKAMI Sunao, UEO Junpei, KUMAGAI Takeru, HORIE Tomoyoshi

The Proceedings of Mechanical Engineering Congress, Japan ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Partitioned Iterative Method for Composite Piezoelectric Bimorph Using Structural Shell and Electric Solid Elements

TAKATA Rei, ISHIHARA Daisuke, Chigahalli Ramegowda Prakasha, NIHO Tomoya, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Language：Japanese Publishing type：Research paper (other academic)

In general, piezoelectric bimorph for actuators and sensors is thin and includes electrodes and shim plates. Therefore, this study deals with the thin composite piezoelectric bimorph. Solid elements can describe the various type of distributions of electric potential over the thickness. However, shell elements are more appropriate for the thin structural analysis. Therefore, instead of using piezoelectric solid elements or piezoelectric shell elements, solid elements and shell elements are used to simulate the electrical field and the structural field, respectively. The coupled algorithm is based on the block Gauss-Seidel method and a novel transformation method between the solid and shell variables. In the structural analysis, the rule of mixtures about the bending rigidity and the mass is used. In the electrical analysis, the single piezoelectric solver is used to obtain the potential distribution in the composite piezoelectric bimorph using a pseudo-piezoelectric treatment for the conductor. Finally, this study illustrates the very accurate potential distributions in the actuator and sensor modes of the thin composite piezoelectric bimorph.

DOI： 10.1299/jsmecmd.2018.31.236

Other Link： https://ci.nii.ac.jp/naid/130007653661

A shape simplification modeling of the cambering in insect’s flapping wings using beam and shell Reviewed

Ishihara D., Yokota J., Onishi M., Niho T., Horie T.

Transactions of the Japan Society for Computational Engineering and Science 2018 2018.01

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this study, a shape simplification modeling of insect flapping wings is proposed in order to reveal the mechanical roles of the veins in their cambering, since it seems to be unclear how the elastic deformation of insect wings caused by the aerodynamic force results in their camber. In the proposed modeling, the veins are divided into the areas according to their functions, and the macroscopic constitutive relationship in each area is described using the corresponding beam. Furthermore, the wing membrane supported by the veins is described using a rectangular shell. The aerodynamic pressure dominant in the cambering is considered in the static deformation of the model wing. The finite element analysis taking into account the geometric nonlinearity is applied to the proposed model with the setup consistent with the actual insect. As the result, the mechanical roles of the veins in the cambering of insect flapping wings are revealed.

DOI： 10.11421/jsces.2018.20180018

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85120066952&origin=inward

Large scale simulation of microscale contact deformation and electric current coupled finite element analysi for electrical contact resistance

NIHO Tomoya, KURAMAE Hiroyuki, YATUDUKA Ryosuke, HORIE Tomoyoshi, ISHIHARA Daisuke

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Language：Japanese Publishing type：Research paper (other academic)

Electrical contact resistance plays important role in melting and bonding of steel sheets interface for resistance spot welding. Although many researchers have proposed theoretical models of electrical contact resistance, microscale structural and electrical coupled finite element analysis is required to evaluate electrical contact resistance because its characteristics depend on the real contact surface, elasto-plastic large deformation contact behavior, electric current and temperature. In this study, we discuss a microscale structural and electrical coupled finite element analysis for the electrical contact resistance. In this analysis, the structural analysis with elasto-plastic, large deformation and contact effect is performed using measured surface based finite element analysis model and temperature dependent material properties. Deformed shape obtained by the structural analysis is used for the electrical analysis considering temperature dependent electrical resistivity. The electrical contact resistance analyses are performed to discuss the SS–RVE (Statistically Similar Representative Volume Element) size and computational cost, and to confirm the validity of the proposed analysis method. The dependency of the electrical contact resistance on the contact pressure and the temperature are compared with those of Babu's model and experimental results from the viewpoint of these path dependencies.

DOI： 10.1299/jsmecmd.2018.31.257

Other Link： https://ci.nii.ac.jp/naid/130007653677

Prototyping of Insect-like micro flyer with 2.5-dimensional structure

TAKAGI Masakatsu, ISHIHARA Daisuke, OHIRA Naoto, MURAKAMI Sunao, HORIE Tomoyoshi

The Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Microfabrication of hybrid structure composed of rigid silicon and flexible PI membranes Reviewed

Murakami S., Ishihara D., Araki M., Ohira N., Ito T., Horie T.

Micro and Nano Letters 12 ( 11 ) 913 - 915 2017.11

Microfabrication of hybrid structure composed of rigid silicon and flexible polyimide membranes Reviewed

Murakami S., Ishihara D., Araki M., Horie T., Ohira N., Ito T.

2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017 840 - 843 2017.08

Strongly Coupled Finite Element Analysis of Electric-Structure-Fluid Interaction in MEMS

No.OS8-02-02, 2pages 2017.08

Design of micro flexible wing mimicking insect flapping flight using fluid-structure interaction analysis Invited

111 - 112 2017.05

表面マイクロマシニングに基づく昆虫規範型マイクロ飛行体の試作

高木方勝，大平直人，石原大輔，村上直，堀江知義

電磁力関連のダイナミクスシンポジウム論文集 13 - 14 2017.05

Passive mechanism of pitch recoil in flapping insect wings Reviewed

Ishihara D., Horie T.

Bioinspiration and Biomimetics 12 ( 1 ) 2017.02

MEMS技術に基づく微小羽ばたき翼の変位変換システムの設計と試作

大平直人, 石原大輔, 村上直, 堀江知義

日本機械学会第29回バイオエンジニアリング講演会論文集 No.16-76 2F23, 2pages 2017.01

Stability analysis and evaluation of staggered coupled analysis methods for electromagnetic and structural coupled finite element analysis Reviewed

Niho T., Horie T., Uefuji J., Ishihara D.

Computers and Structures 178 129 - 142 2017.01

Triply Coupled Effect of Elasto-Plastic Contact Deformation, Electric Current and Thermal Conduction of Steel Sheets Interfaces for Three Sheets Resistance Spot Welding Reviewed

NIHO Tomoya, HORIE Tomoyoshi, IKEGAMI Kyohei, ISHIHARA Daisuke, MATSUNAGA Kenichi, SHU Tokurin

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY ( JAPAN WELDING SOCIETY ) 35 ( 2 ) 63 - 72 2017.01

Language：English Publishing type：Research paper (scientific journal)

Resistance spot welding of three steel sheets is used in automotive manufacturing. The determination of welding conditions for three steel sheets welding is more difficult than that for two steel sheets welding because in the former case, two interfaces are simultaneously welded. The welding condition to improve the weld strength of thin and thick sheets' interface is required for thin, thick, and thick sheets welding. In addition, avoiding weld spatter is an important technical concern for the three sheets welding. This paper discusses the triply coupled effects of elasto-plastic large deformation contact, electric current, and thermal conduction for the three sheets welding via triply coupled finite element analyses. The triply coupled effects of thin and thick sheets' interface and those of thick and thick sheets' interface are compared to discuss the special characteristics of the triply coupled effects of three sheets welding. The nugget diameter of the thick and thick sheets' interface is larger than that of the thin and thick sheets' interface because the electrical contact resistance and the base electrical resistance of high-strength steels are higher than those of general-strength steels. Furthermore, the chain of the coupled effects of electrical resistances, Joule heat generation, temperatures, and electrical resistances is strong. As the effect of welding current on temperature by the coupling effect for the thick and thick sheets' interface is stronger than that for the thin and thick sheets' interface, the possibility of spatter increases. Increasing the nugget diameter solely for the thin and thick sheets' interface using electrode force is difficult because the effect of the electrode force on the nugget diameter is approximately the same for both interfaces. On the contrary, material characteristics can affect the nugget diameter solely for either of the interfaces. The possibility of spatter increases for the welding condition with a sheet gap because the temperature of the contact edge for the sheets' interface increases.

DOI： 10.2207/qjjws.35.63

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85048223175&origin=inward

Microscale electrical contact resistance analysis for resistance spot welding Reviewed

Niho T., Kubota K., Aramaki H., Kuramae H., Ishihara D., Horie T.

Proceedings of the 7th International Conference on Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2017 2017-January 1152 - 1158 2017.01

Fluid-Structure Interaction Design Approach for Insect-Inspired MEMS Wings

ISHIHARA Daisuke, ARAKI Masateru, OHIRA Nato, MURAKAMI Sunao, HORIE Tomoyoshi

NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan ( National Committee for IUTAM ) 64 ( 0 ) OS8 - 02-01 2017.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

In this study, a FSI design approach of an insect–inspired MEMS wing is proposed. Similar to actual insects, the proposed design actively uses the FSI to create the passive wing motion. Each design solution has a so-called 2.5–D structure for the MEMS technology. The 3–D unsteady monolithic FSI equation system is solved to find the satisfactory design solutions using a projection method. An area of satisfactory design solutions in a design parameter space is found. Each design solution in this area can generate the thrust sufficient to support the weight of the model insect.

DOI： 10.11345/japannctam.64.0_OS8-02-01

Other Link： https://ci.nii.ac.jp/naid/130007510260

A numerical study on fluid-structure interaction cause of tip path in flapping flexible wings

ISHIHARA Daisuke, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2017 ( 0 ) 2017.01

Development of ALE mesh control method based on element qualities

Goto Atsushi, Ishihara Daisuke, Horie Tomoyoshi, Niho Tomoya

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2017 ( 0 ) 2017.01

Effect of Structure-Electric Current-Thermal Triply Coupled Model and Microscale Electrical Contact Resistance Analysis Model on Resistance Spot Welding Analysis

NIHO Tomoya, KURAMAE Hiroyuki, ARAMAKI Hirochika, NAKANO Yosuke, ISHIHARA Daisuke, HORIE Tomoyoshi

NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan ( National Committee for IUTAM ) 64 ( 0 ) OS8 - 02-04 2017.01

Language：Japanese Publishing type：Research paper (other academic)

Resistance spot welding is widely used in manufacturing industry. Analysis of resistance spot welding is required for examination of welding mechanism and determination of welding parameters such as weld current, electrode force and weld time because welding parameters are obtained empirically. In this paper, effect of structure–electric current–thermal conduction triply coupled model on resistance spot welding analysis results are examined to make analysis more efficient. Statistically similar representative volume element size and resolution of finite element analysis model are also discussed for microscale electrical contact resistance analysis of multiscale resistance spot welding analysis.

DOI： 10.11345/japannctam.64.0_OS8-02-04

Other Link： https://ci.nii.ac.jp/naid/130007510177

Effect of structure–electric current–thermal conduction triply coupling on resistance spot welding

Niho Tomoya, Nakano Yosuke, Horie Tomoyoshi, Ishihara Daisuke

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2017 ( 0 ) 2017.01

Strongly Coupled Finite Element Analysis of Electric-Structure-Fluid Interaction in MEMS

Ramegowda Prakasha Chigahalli, Ishihara Daisuke, Niho Tomoya, Horie Tomoyoshi

理論応用力学講演会講演論文集 64 ( 0 ) OS8 - 02-02 2017.01

Fluid-structure interaction design of insect-like micro flapping wing Reviewed

Ishihara D., Ohira N., Takagi M., Murakami S., Horie T.

Proceedings of the 7th International Conference on Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2017 2017-January 870 - 875 2017.01

A finite element approach for a coupled numerical simulation of fluid-structure-electric interaction in MEMS Reviewed

Ramegowda P., Ishihara D., Niho T., Horie T.

Proceedings of the 7th International Conference on Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2017 2017-January 999 - 1007 2017.01

Design and fabrication of MEMS-based transmission systems for micro flapping wing

OHIRA Naoto, ISHIHARA Daisuke, MURAKAMI Sunao, HORIE Tomoyoshi

The Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME ( The Japan Society of Mechanical Engineers ) 2017 ( 0 ) 2017.01

A novel coupled algorithm for shell structure-electric field interaction analysis in MEMS piezoelectric actuator Reviewed

Proceedings of The 35th JSST Annual Conference International Conference on Simulation Technology 2016 332 - 339 2016.10

Numerical instability of staggered electromagnetic and structural coupled analysis using time integration method with numerical damping Reviewed

3 Paper ID 1962, 8pages 2016.08

Performance evaluation of finite element coupled algorithms for structure-electric interaction analysis of MEMS actuator

2016.07

Fluid-structure interaction design of micro flexible wing mimicking insect flapping flight

2016.07

Effect of frequency ratio on passive pitching motion of insect wings

ISHIHARA Daisuke, SHIRAKAWA Hiroki, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2016 ( 0 ) 2016.01

Structural mechanics modeling of insect wings using nonlinear finite element analysis

YOKOTA Jun, ISHIHARA Daisuke, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2016 ( 0 ) 2016.01

Analysis of Structure, Electric Current and Thermal Triply Coupled Phenomenon for Resistance Spot Welding and Proposal of Welding Condition

Hayashi Naoki, Horie Tomoyoshi, Niho Tomoya, Ishihara Daisuke

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2016 ( 0 ) 2016.01

Triply coupled effect of large deformation elasto-plastic contact, electric current and thermal conduction for three steel sheets resistance spot welding

Niho Tomoya, Ikegami Kyohei, Horie Tomoyoshi, Ishihara Daisuke, Matsunaga Kenichi, Shu Tokurin

Preprints of the National Meeting of JWS ( JAPAN WELDING SOCIETY ) 2016 ( 0 ) 12 - 13 2016.01

昆虫模倣翼のMEMSプロセスによる試作とその性能評価

荒木正輝，石原大輔，村上直，堀江知義

第7回マイクロ・ナノ工学シンポジウム第7回マイクロ・ナノ工学シンポジウム講演論文集 0pm1-E-5, 2pages 2015.10

Hierarchically decomposed finite element analysis of the structure-fluid-electrostatic interaction Invited

15-231 20 - 21 2015.10

Fluid-structure interaction analysis for the aerodynamic contribution to the passive pitching motion of dipteran flapping wings Invited Reviewed

66 - 66 2015.09

Finite element analysis using a hierarchal decomposition for the interaction of structure, fluid and electrostatic field in mems Reviewed

Ishihara D., Horie T., Niho T., Baba A.

COUPLED PROBLEMS 2015 - Proceedings of the 6th International Conference on Coupled Problems in Science and Engineering 1023 - 1028 2015.04

Elasto-Plastic Contact, Electric Current and Thermal Conduction Triply Coupled Analysis Model for Resistance Spot Welding Reviewed

NIHO Tomoya, HORIE Tomoyoshi, MORITA Yusuke, ISHIHARA Daisuke, YAMAKAWA Daisuke, MOMII Shinji

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY ( JAPAN WELDING SOCIETY ) 33 ( 3 ) 271 - 282 2015.01

Language：English Publishing type：Research paper (scientific journal)

Interactions between elasto-plastic contact deformation, electric current and heat conduction produces complicated triply coupled effect in the resistant spot welding. Since the coupled effect affects weld strength, the coupled finite element analysis is required to determine welding parameters such as welding current, electrode force, welding time and electrode shape. This paper discusses in detail the elasto-plastic contact, electric current and thermal conduction triply coupled analysis method. The coupled analysis method uses modified electrical contact resistance model, modified thermal contact resistance model and iterative partitioned coupled algorithm suitable for strong coupled problem. The validity of the method are discussed under the different condition such as welding current, electrode force, welding time, material and number of the steel sheets. The analysis result of nugget growth curve agrees very well with experimental result for two sheet welding. The validity is confirmed by not only nugget growth curve but also surface temperature of steel sheet and electrode for three sheet welding with high tension steel. The solution convergence is discussed for the iterative partitioned coupled algorithm and the conventional coupled algorithm. Since the coupled effect is strong for between electric current and thermal conduction, the choice of the coupled algorithm is important for the resistance spot welding analysis. Effect of elasto-plastic contact deformation, change of electric current distribution and thermal conduction on resistance spot welding are discussed from the viewpoint of coupled effect. The coupled model with ability to simulate the chain of coupled effect is required to improve the analysis reliability. The importance of temperature dependency of material property, electrical contact resistance, thermal contact resistance and latent heat effect are also discussed.

DOI： 10.2207/qjjws.33.271

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84983313640&origin=inward

Hierarchal decomposition for the structure-fluid-electrostatic interaction in a microelectromechanical system Reviewed

Ishihara D., Horie T., Niho T., Baba A.

CMES - Computer Modeling in Engineering and Sciences 108 ( 6 ) 429 - 452 2015.01

258 Fluid-structure interaction analysis for the passive pitching motion of insect flapping wings

ISHIHARA Daisuke, HORIE Tomoyoshi, NIHO Tomoya

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2015 ( 0 ) _258 - 1_-_258-2_ 2015.01

30pm1-E-5 Performance evaluation of insect mimetic wings using MEMS fabrication Process

ARAKI Masateru, ISHIHARA Daisuke, MURAKAMI Sunao, HORIE Tomoyoshi

The Proceedings of the Symposium on Micro-Nano Science and Technology ( The Japan Society of Mechanical Engineers ) 2015 ( 0 ) _30pm1 - E-5-_30pm1-E-5 2015.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

In recent years, Micro Air Vehicles (MAVs) mimicking insects have been developed for the purpose of observation in narrow and disaster areas. Micro Electro Mechanical Systems (MEMS) are typically manufactured using the semiconductor manufacturing technology, and have attracted much attention in various fields. In this study, in order to realize an insect-like MAV, its prototype millimeter wing is developed. The prototype wing is designed based on the mechanics of insect flapping wings and the data of an actual insect. The prototype wing made of a single crystal silicon and a polyimide membrane is fabricated, and its fundamental characteristics are evaluated.

DOI： 10.1299/jsmemnm.2015.7._30pm1-E-5

Other Link： https://ci.nii.ac.jp/naid/110010046076

OS1-5 Fluid-structure interaction analysis for the aerodynamic contribution to the passive pitching motion of dipteran flapping wings(OS1: Bio-inspired Flight System Biomechanics I) Invited Reviewed

Ishihara Daisuke, Horie Tomoyoshi, Niho Tomoya

Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2015 ( 0 ) 2015.01

An experimental and three-dimensional computational study on the aerodynamic contribution to the passive pitching motion of flapping wings in hovering flies Reviewed

Ishihara D., Horie T., Niho T.

Bioinspiration and Biomimetics 9 ( 4 ) 2014.12

流体構造連成相似則に基づく昆虫羽ばたき翼の解析

石原大輔,堀江知義,二保知也

日本実験力学会2014年度年次講演会論文集講演論文集 14 7 - 8 2014.08

MEMS構造要素の振動解析における入力データと連成効果の同定

石原大輔, 堀江知義, 二保知也, 馬場昭好

第19回計算工学講演会論文集 19 D-11-4, 2pages 2014.06

空気中で静電駆動されるマイクロ片持ちはりにおける連成効果

石原大輔,堀江知義,二保知也,馬場昭好

第26回電磁力関連のダイナミクスシンポジウム講演論文集 28 - 29 2014.05

Numerical study on aerodynamic effects in passive pitching dynamics of insect flapping wings Reviewed

ISHIHARA Daisuke, HORIE Tomoyoshi, NIHO Tomoya

Transactions of the JSME (in Japanese) ( The Japan Society of Mechanical Engineers ) 80 ( 812 ) CM0106 - CM0106 2014.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

This study is concerned with aerodynamic effects in passive pitching dynamics of insect flapping wings, which would be based on the Fluid-Structure Interaction (FSI). Thus, we evaluated them using three-dimensional numerical analyses for the FSI based on the finite element method. In the numerical analyses, the FSI in insect flapping wing is broken down into its constituent components in order to find the aerodynamic effects in the passive pitching dynamics as follows: (a) The dipteran passive pitching dynamics is based on the interaction between the wing's elastic and aerodynamic forces, while it is enhanced by the wing's inertial effect. (b) The air damping leads the mode of wing's natural vibration from underdamping to overdamping so as to form the characteristic pitching motion, where the damped natural vibration of the wing appears so as to enhance the wing rotation.

DOI： 10.1299/transjsme.2014cm0106

Other Link： https://ci.nii.ac.jp/naid/130003399154

A fluid-structure interaction simulation using the complementary computation and dynamically scaled experiment

Ishihara Daisuke, Horie Tomoyoshi, Niho Tomoya

NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan ( National Committee for IUTAM ) 63 ( 0 ) 2014.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

A reliable analysis method is required for strongly coupled problem of fluid and structure. In the dynamically scaled experiment, it is difficult to satisfy the key conditions of non-dimensional numbers simultaneously as the number of conditions increases. In the computation, although it has been developing rapidly, its careful validation is still required. In this study, a fluid-structure interaction simulation using the complementary computation and dynamically scaled experiment is proposed, and it is applied for an insect flapping flight to demonstrate its ability.

DOI： 10.11345/japannctam.63.0_83

Other Link： https://ci.nii.ac.jp/naid/130005478028

Complement of FSI dynamically scaled experiment using computation and its application to insect flight analysis

ISHIHARA Daisuke, HORIE Tomoyoshi, NIHO Tomoya

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2014 ( 0 ) 403 - 404 2014.01

A projection method for the monolithic interaction system of an incompressible fluid and a structure using a new algebraic splitting Reviewed

Ishihara D., Horie T.

CMES - Computer Modeling in Engineering and Sciences 101 ( 6 ) 421 - 440 2014.01

J0220401 A computational study on the air damping in the passive pitching motion of insect flapping wing

ISHIHARA Daisuke, HORIE Tomoyoshi

The Proceedings of Mechanical Engineering Congress, Japan ( The Japan Society of Mechanical Engineers ) 2014 ( 0 ) _J0220401 - -_J0220401- 2014.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

This study is concerned with air damping effect in passive pitching motion of insect flapping wing, which will be based on the Fluid-Structure Interaction (FSI). Thus, we evaluated it using three-dimensional numerical analyses for the FSI based on the finite element method. From the numerical analysis, we found that the air damping leads the mode of wing's natural vibration from underdamping to overdamping so as to form the characteristic pitching motion.

DOI： 10.1299/jsmemecj.2014._J0220401-

Other Link： https://ci.nii.ac.jp/naid/110009943479

Convergence evaluation on a projection method for the interaction of an incompressible fluid and an elastic structure Reviewed

ISHIHARA Daisuke, HORIE Tomoyoshi

Transactions of the Japan Society for Computational Engineering and Science ( JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE ) 2013 ( 0 ) 20130017 - 20130017 2013.12

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this study, performances of a projection method for the interaction system of an incompressible fluid and a flexible elastic structure are evaluated. The proposed projection method splits the monolithic equation system into the equilibrium equations and the pressure Poisson equation (PPE) using the intermediate velocity in the nonlinear iterative procedure. The monolithic equation system has the drawbacks of the large degrees of freedoms and the ill-condition. The proposed formulation reduces these drawbacks. The performance of the proposed projection method is demonstrated using a channel with a flexible flap, which is one of typical test problems, and a flapping flexible wing in a closed tank with comparable fluid and structural mass densities. It follows from the results for these numerical examples that the proposed projection method is efficient for the cases, where some conventional monolithic and partitioned methods would suffer the numerical difficulties.

DOI： 10.11421/jsces.2013.20130017

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891934466&origin=inward

A consistent projection method for monolithic fluid-structure interaction systems Reviewed

2013.06

Finite Element Analysis Using Hierarchal Decomposition for Interaction of Structural, Fluidic and Electrostatic Fields in MEMS Structural Components Reviewed

ISHIHARA Daisuke, HORIE Tomoyoshi, NIHO Tomoya, BABA Akiyoshi

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A ( The Japan Society of Mechanical Engineers ) 79 ( 804 ) 1291 - 1302 2013.01

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this study a finite element analysis using hierarchal decompositions for the interaction of structural, fluidic and electrostatic fields is applied for vibration analyses of a MEMS structural component. The interaction is partitioned into the electrostatic field and the fluid-structure interaction (FSI) using the block Gauss-Seidel method. The FSI is split into the pressure field and the other using a projection method, where the intermediate state variables are used for the splitting without generating computationally expensive Schur complement matrices. The developed finite element analysis is applied for a micro cantilever beam actuated by the step electrostatic force in vacuum and air. It was demonstrated from the comparisons among the numerical and experimental results that the proposed analyses provide the results consistent with the experimental results. It follows from the present results that the numerical analyses taking into account the interaction of the structural, fluidic and electrostatic fields are required for the accurate predictions of the vibration characteristics of the MEMS structural components.

DOI： 10.1299/kikaia.79.1291

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84885225030&origin=inward

Consistent Projection Method for Fluid-Structure Interaction Reviewed

ISHIHARA Daisuke, HORIE Tomoyoshi

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A ( The Japan Society of Mechanical Engineers ) 79 ( 804 ) 1161 - 1170 2013.01

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this study a consistent projection method for the fluid-structure interaction (FSI) was proposed. The intermediate state variables were used to split the monolithic equation system into the equilibrium equations and the pressure Poisson equation (PPE). The incompressibility constraint is asymptotically satisfied by solving the proposed PPE in the iterative solution procedure under the asymptotic agreement of the intermediate velocity with the velocity. Therefore the proposed method is consistent with the monolithic method. The performance of the present method was demonstrated using a channel, which is one of typical test problems, and a flexible wing flapping in the closed fluid domain with the comparable fluid and structural densities.

DOI： 10.1299/kikaia.79.1161

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84885219667&origin=inward

Finite element analysis for interaction problems of structure, fluid and electrostatic field in micro cantilever beams Invited Reviewed

Daisuke Ishihara, Tomoyoshi Horie, Tomoya Niho, Akiyoshi Baba

Proceedings of KSME-JSME Joint Symposium on CM & CAE 2012 255 - 260 2012.09

Evaluation using dynamically scaled experiment of dipteran passive pitching motion caused by fluid-structure interaction Reviewed

Ishihara D., Yoshida S., Shimura T., Horie T., Niho T.

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B 78 ( 786 ) 300 - 310 2012.02

MEMSにおける構造‐流体‐静電界連成現象の汎用連成シミュレーション手法の開発 Invited

石原大輔,馬場昭好

財団法人カシオ科学振興財団平成２２年度年報 2 - 80-81 2010.08

A Three-Dimensional Computational Study on the Fluid-Structure Interaction Cause of Wing Pitch Changes in Insect Flapping Flight Reviewed

Daisuke Ishihara,Tomoyoshi Horie,Tomoya Niho

Proceedings of the 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics 27 - 28 2010.07

Parallel Monolithic Approach for Shell-Fluid Interaction Analysis of Flapping Flexible Wing Invited Reviewed

Daisuke Ishihara,Tomoyoshi Horie,Tomoya Niho

Proceedings of 4th Korea-Japan COSEIK-JSCES Workshop on Computational Engineering 26 - 27 2010.05

A Study on the Passive Pitching and Lift Generation in Crane-Fly's Flight(Fluids Engineering) Reviewed

ISHIHARA Daisuke, YAMASHITA Yu, HORIE Tomoyoshi, NIHO Tomoya

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ( The Japan Society of Mechanical Engineers ) 76 ( 764 ) 601 - 607 2010.04

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this study, we evaluated the lift force generated by the crane-fly's flapping wing with the passive pitching using the dynamically scaled model. Since the wing and the surrounding fluid interact with each other, the dynamic similarity between the model and actual crane-fly flights was measured using not only the Reynolds and Strouhal numbers but also the mass and Cauchy numbers. Although there existed the difference between the mass number due to the constant acceleration of the gravity, but the lift coefficient simulated by our model indicated that the flapping wing with the passive pitching produces the enough lift force to support the crane-fly's weight.

DOI： 10.1299/kikaib.76.764_601

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77954711284&origin=inward

Finite Element Analysis for Coupled Problems of Structure, Fluid and Electrostatic Field in Micro Cantilever Beam Invited Reviewed

Daisuke Ishihara,Tomoyoshi Horie,Tomoya Niho,Akiyoshi Baba

2nd International Workshops on Advances in Computational Mechanics 1 - 121 2010.03

Passive maintenance of high angle of attack and its lift generation during flapping translation in crane fly wing Reviewed

Ishihara D., Yamashita Y., Horie T., Yoshida S., Niho T.

Journal of Experimental Biology 212 ( 23 ) 3882 - 3891 2009.12

A two-dimensional computational study on the fluid-structure interaction cause of wing pitch changes in dipteran flapping flight Reviewed

Ishihara D., Horie T., Denda M.

Journal of Experimental Biology 212 ( 1 ) 1 - 10 2009.01

Incremental formulation of pressure based method for fluid-rigid body interaction using intermediate variable and its verification Reviewed

Ishihara D., Matsumoto J.

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B 74 ( 12 ) 2419 - 2425 2008.12

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this paper, an incremental formulation of pressure based method for fluid-rigid body interaction using intermediate variable is presented. The present method is based on the method proposed by Matsumoto and Kawahara in previous studies. In their method, the pressure Poisson equation equivalent to the incompressibility constraint is derived by using the intermediate fluid velocity and the approximation of enough small error between the intermediate fluid velocity and the fluid velocity. In the present method, all terms appear in the coupled equation system are evaluated in the same time instant, and unknown variables are solved incrementally by iterative solution procedure in each time step so as to satisfy the coupled equation system defined in the time instant. The present formulation is required when structural nonlinearity such as large deformation should be considered. The present method is applied for the free vibration of a rigid circular cylinder in a quiescent fluid to verify its performance.

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=62649086654&origin=inward

Development of strongly coupled method for interaction of structure, incompressible viscous fluid and electrostatic field (1st report, rigid body approximation of structure) Reviewed

Ishihara D., Kubota A., Horie T., Niho T., Yoshimura S.

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 74 ( 8 ) 1068 - 1075 2008.08

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this paper, a strongly coupled method for interaction of rigid body, incompressible viscous fluid and electrostatic field is developed. The present method is composed of monolithic and partitioned methods. The former solves structure-fluid interaction and the later solves interaction of electrostatic field and the other fields. The difference between the present method and conventional method is the introduction of the iterative solution procedure in the partitioned method. To demonstrate the fundamental performances of the present method, it is applied to simulate a micro membrane actuated by electrostatic force situated in air. The present result agrees well with the theoretical solution when the displacement of the rigid body is small. We also comfirm that the iterative solution procedure makes the present method to be the strongly coupled method through the numerical example.

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=55349137053&origin=inward

Efficient Parallel Analysis of Shell-fluid Interaction Problem by Using Monolithic Method Based on Consistent Pressure Poisson Equation Invited Reviewed

Daisuke Ishihara,Shigeo Kanei,Shinobu Yoshimura,Tomoyoshi Horie

Journal of Computational Science and Technology 2 ( 1 ) 185 - 196 2008.06

Efficient parallel analysis of shell-fluid interaction problem by monolithic method based on consistent pressure poisson equation Reviewed

Ishihara D., Kanei S., Yoshimura S., Horie T.

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 73 ( 1 ) 34 - 41 2007.01

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this paper, a parallel monolithic method for shell-fluid interaction based on the consistent Pressure Poisson Equation (PFE) is developed and its parallel computational efficiency is demonstrated. The previous and present studies show that iterative solvers without preconditioning work well to solve the PPE, even though the coefficient matrix of the original linearized coupled equations becomes to be ill-conditioned. As a consequence, combining with the iterative solvers without preconditioning parallelized based on the mesh decomposition, the developed method can archive efficient parallel computation. To demonstrate the performances of the developed method, it is applied to simulate the vibration of an elastic plate situated in the wake of a rectangular cylinder and a flapping elastic wing in fluid.

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34248549109&origin=inward

Development of monolithic method for shell-fluid interaction based on consistent pressure poisson equation Reviewed

Ishihara D., Kanei S., Horie T.

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 72 ( 4 ) 377 - 384 2006.07

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

This paper describes an efficient monolithic method for shell-fluid interaction problems based on the fluid pressure Poisson equation (PPE). The PPE is derived so as to be consistent with the coupled equation system for the shell-fluid interaction. In the proposed method, the fluid pressure is derived implicitly so as to satisfy the incompressibility. constraint and all the other unknown variables except those for the shell are derived explicitly. The coefficient matrix of the PPE is well-conditioned even if the structure is very stiff or heavy compared to the fluid, and even if the ill-conditioned submatrix is generated due to the shell elements. These characteristics are successfully utilized to combine the proposed method with the standard conjugate gradient method. To demonstrate fundamental perfermances of the proposed method, it is applied to evaluate the vibration characteristics of a thin elastic cantilever plate in a quiescent fluid.

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33745803182&origin=inward

Fluid-structure interaction modeling of insect flight (1st report, investigation of automatic wing rotation and lift force generation by two-dimensional numerical analysis) Reviewed

Ishihara D., Horie T.

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B 72 ( 6 ) 1410 - 1417 2006.06

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this paper, a novel insect flight model based on fluid-structure interaction is proposed. Incorporating the high compliance of the wing base, which is observed in Diptera, the proposed model can express the automatic control of the wing rotation via fluid-structure interaction and can generate the adequate aerodynamic forces for the insect flight. The fluid-structure interaction is simulated by a monolithic method based on the finite element method. The result given by the proposed model is investigated by comparison with experimental results of the dynamically scaled model of the fruit fly given by Dickinson et al.

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33748313063&origin=inward

高性能演算サーバーによる並列流体構造連成解析 Invited

石原　大輔

九州大学情報基盤センター広報 6 ( 2 ) 43 - 46 2006.04

A monolithic approach for interaction of incompressible viscous fluid and an elastic body based on fluid pressure Poisson equation Reviewed

Ishihara D., Yoshimura S.

International Journal for Numerical Methods in Engineering 64 ( 2 ) 167 - 203 2005.09

Monolithic Approach for Fluid-Structure Interaction Based on Consistent Pressure Poisson Equation Reviewed

ISHIHARA Daisuke, YOSHIMURA Shinobu

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ( The Japan Society of Mechanical Engineers ) 71 ( 706 ) 1565 - 1572 2005.06

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

This paper describes a new monolithic approach based on the Pressure Poisson Equation (PPE) to solve interaction problems of incompressible viscous fluid and an elastic body. The PPE is derived so as to be consistent with the coupled equation system for the fluid-structure interaction (FSI). Based on this approach, we develop two efficient monolithic methods. In both methods, the fluid pressure is derived implicitly so as to satisfy the incompressibility constraint and all the other unknown variables are derived fully explicitly or partially explicitly. The coefficient matrix of the PPE for the FSI has characteristics of (a) symmetric and positive definite feature, (b) reduction of degrees of freedoms to be solved, and (c) less dependence of the condition on material properties. The arbitrary Lagrangian Eulerian method is employed for the fluid to take into account the deformable fluid structure interface. To demonstrate fundamental performances of the proposed approach, the developed two monolithic methods are applied to simulate the vibration of a rectangular cylinder induced by vortex shedding.

DOI： 10.1299/kikaib.71.1565

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=23844486814&origin=inward

A Monolithic Method for Fluid-shell Interaction Based on Consistent Pressure Poisson Equation Reviewed

Daisuke Ishihara,Tomoyoshi Horie

Proceedings of the First International Conference on Computational Methods for Coupled Problems in Science and Engineering (CD-ROM) 2005.05

Development of Strong Coupling Method Considering Non-conforming Mesh on Fluid-Structure Interface (1st Report, Verification of Method):1st Report, Verification of Method Reviewed

ISHIHARA Daisuke, HORIE Tomoyoshi

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ( The Japan Society of Mechanical Engineers ) 71 ( 705 ) 1346 - 1353 2005.05

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

This paper describes a strong coupling method considering non-conforming mesh on fluid-structure interface. In the present method, a transformation matrix derived from the geometrical relations between non-conforming fluid and structural meshes on fluid-structure interface is directly combined with the formulation of the strong coupling method to satisfy the compatibility and equilibirium conditions on fluid-structure interface. The conjugate gradient method is applied to solve the derived coupled equation system by introducing the consistent pressure Poisson equation. To verify basic characteristics of the proposed method, it is applied for free vibration of a cylinder in quiescent fluid. The added mass and damping coefficients derived by the present method agree well with those by other researchers.

DOI： 10.1299/kikaib.71.1346

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=23144455216&origin=inward

Efficient Strong Coupling Method for Fluid-Structure Interaction Based on Explicit Method for Structure and Semi-implicit method for Fluid Reviewed

ISHIHARA Daisuke

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ( The Japan Society of Mechanical Engineers ) 70 ( 700 ) 3098 - 3105 2004.12

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

This paper describes an efficient strong coupling method for fluid-structure interaction based on the explicit method for structure and the semi-implicit method for fluid. The solution process of fluid-structure interation system is divided into that of fluid and structure, which is independent to each other except data transfer of the fluid-structure interface. Some existing codes with small modification can be utilized to realize the above two solution processes. Note that the time increment is restricted by the Courant's and diffusive number conditions. The method is applied to solve a loaded cantilever in a flow channel under some conditions. Through the numerical results, characteristics of the method are compared to those of a strong coupling and a weak coupling method

DOI： 10.1299/kikaib.70.3098

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=15544369797&origin=inward

オブジェクト指向に基づく構造設計用統合化CAEシステムとマイクロマシン構造設計への適用 Reviewed

吉村忍,石原大輔

日本設計工学会論文集 39 ( 11 ) 584 - 593 2004.11

マイクロマシンの計算力学シミュレーション Reviewed

吉村忍,石原大輔

機械の研究 55 ( 11 ) 1109 - 1118 2003.11

Parallel multi-steps strong coupling method for interaction of incompressible viscous fluid and an elastic body Reviewed

Ishihara D., Yoshimura S., Yagawa G.

Computational Fluid and Solid Mechanics 2003 1373 - 1376 2003.06

Design window search using continuous evolutionary algorithm and clustering - Its application to shape design of microelectrostatic actuator Reviewed

Ishihara D., Jeong M., Yoshimura S., Yagawa G.

Computers and Structures 80 ( 31 ) 2469 - 2481 2002.12

Multi-step strong coupling method for interaction of incompressible viscous flow and an elastic body Reviewed

Ishihara D., Yoshimura S., Yagawa G.

Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B 68 ( 673 ) 2451 - 2459 2002.09

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

This paper describes a multi-step strong coupling method to analyze an equation system of incompressible viscous fluid and an elastic body. The procedure is derived based on the following techniques; (a) sub-structuring, (b) velocity-pressure splitting, and (c) time integration of Newmark's family. Only simultaneous equations with well-defined symmetric matrices are solved in the method. To demonstrate fundamental performance of the method, it is applied to solve an impacted beam in fluid. The result shows good agreement with a previous work.

DOI： 10.1299/kikaib.68.2451

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Multi-steps strong coupling method for interaction of incompressible viscous fluid and an elastic body Reviewed

Daisuke ISHIHARA,Shinobu YOSHIMURA,Genki YAGAWA

Proceedings of Fifth World Congress on Computational Mechanics (http://wccm.tuwien.ac.at/) 2002.07

Structural design of micro electrostatic acutuator for optical memory using design windows searching method Reviewed

Ishihara D., Jeong M., Yoshimura S., Yagawa G., Kim Y.

2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001 157 - 160 2001.12

Shape Design of Micro Electrostatic Actuator using Multidimensional Design Windows Reviewed

M.J.Jeong,Y.J.Kim,D.Ishihara,S.Yoshimura,G.Yagawa

Transactions of the KSME 25 ( 11 ) 1796 - 1801 2001.11

Automated Search for Multidimensional Design Windows Using Continuous Evolutionary Algorithms and Improved K-means Clustering (It's Application to Shape Design of Micro Electrostatic Actuator for Optical Memory) Reviewed

Ishihara D., Jeong M., Yoshimura S., Yagawa G., Komoriya H., Kim Y.

Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C 67 ( 654 ) 460 - 468 2001.01

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

This paper proposes an automated search method for multidimensional design window (DW), which is defined as an area of satisfactory design solutions in a design parameter space, using both continuous evolutionary algorithms (CEA) and improved K-means clustering. This method consists of two phases: (a) CEA-based search for satisfactory design solutions in an ill-structured design space, and (b) clustering-based identification of DWs from the solutions. To demonstrate practical performance of the method, it is applied to an automated structural design of micro electrostatic actuator for optical memory. © 2001, The Japan Society of Mechanical Engineers. All rights reserved.

DOI： 10.1299/kikaic.67.460