Faculty Profiles - ISHIHARA Daisuke

Papers - ISHIHARA Daisuke

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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

Scopus

CiNii Article

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

CiNii Article

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

CiNii Article

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

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

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

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

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

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

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

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Papers - ISHIHARA Daisuke