Faculty Profiles - ISHIHARA Daisuke

Papers - ISHIHARA Daisuke

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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

CiNii Article

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

CiNii Research

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

CiNii Research

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

CiNii Research

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

CiNii Research

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

CiNii Article

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

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Papers - ISHIHARA Daisuke