Faculty Profiles - ISHIHARA Daisuke

Papers - ISHIHARA Daisuke

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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.<br>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

Scopus

CiNii Article

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

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

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

CiNii Article

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

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

CiNii Article

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

CiNii Article

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-

CiNii Article

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

Scopus

CiNii Article

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

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Papers - ISHIHARA Daisuke