Tomoyuki Hakoyama Last updated: Jan 12, 2020 at 11:57
Name
Tomoyuki Hakoyama Affiliation
Gifu University Section
Faculty of Engineering Department of Mechanical Engineering Job title
Assistant Professor Research funding number
20799720 ORCID ID
0000-0002-6116-9825
Research Interests
simulation(195) ,
forming limit(2) ,
yield function(1) ,
anisotropy(6) ,
yield surface(1) ,
material model(1) ,
biaxial stress test(1) ,
constitutive equations(1) ,
tube forming(2) ,
metal forming(35) ,
material testing(2) ,
plasticity(59) ,
elasticity(20) ,
Metal(99) Academic & Professional Experience
Apr 2018
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Today
Assistant Professor, Engineering, Gifu University
Feb 2017
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Mar 2018
Special researcher, RAP, RIKEN
Apr 2016
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Jan 2017
JSPS Research Fellow PD, Institute of Engineering, Tokyo University of Agriculture and Technology
Aug 2016
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Sep 2016
Visiting scholar, KU Leuven
Education
Apr 2014
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Mar 2016
Mechanical systems engineering, Engineering, Tokyo University of Agriculture and Technology
Apr 2012
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Mar 2014
Mechanical systems engineering, Engineering, Tokyo University of Agriculture and Technology
Apr 2008
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Mar 2012
Mechanical systems engineering, Engineering, Tokyo University of Agriculture and Technology
Published Papers
Effect of Strain Rate on Determining Post-necking Work Hardening of a Low-carbon Steel Sheet
Tomoyuki Hakoyama, Sam Coppieters, Toshihiko Kuwabara
Proceedings of NUMIFORM 2019: The 13th International Conference on Numerical Methods in Industrial Forming Processes 181-184 Aug 2019 [Refereed]
Tomoyuki Hakoyama, Sam Coppieters, Toshihiko Kuwabara
AIP Conference Proceedings 2113 Jul 2019
© 2019 Author(s). The effect of the calibration methods for determining the material parameters of a yield function on the predictive accuracy of the finite element analysis of a hole expansion forming for a cold rolled mild steel sheet is investi...
Z. G. Wang, T. Hakoyama, Y. Endo, K. Osakada
CIRP Annals Jan 2019
© 2019 The flow model in metal cutting is applied to cold forging for forming a H-shaped double cup by moving the bottom of an ironed cup to a predetermined position. In the proposed process, the cutting flow occurs between the internal corners of...
Effect of Measuring Method of Work Hardening Curve on the Accuracy of Forming Limit Analyses
Tomoyuki Hakoyama, Sam Coppieters, Toshihiko Kuwabara
Proceedings of 51st ICFG Plenary Meeting 127-135 Sep 2018
Time and flow stress dependences of internal stress during stress relaxation
Kusuda, Y., Murasawa, K., Suzuki, Y., Suzuki, S., Takamura, M., Hakoyama, T., Ikeda, Y., Otake, Y., Hama, T.
Procedia Manufacturing 15 1746-1753 Sep 2018 [Refereed]
S. Coppieters, T. Hakoyama, D. Debruyne, S. Takahashi, T. Kuwabara
Journal of Physics: Conference Series 1063 Aug 2018 [Refereed]
© 2018 Institute of Physics Publishing. All rights reserved. The main impetus for this work is the reduction of experimental work associated with yield locus identification of sheet metal through homogeneous tests. Inverse identification strategie...
M. Takamura, K. Murasawa, Y. Kusuda, Y. Suzuki, T. Hakoyama, Y. Ikeda, Y. Otake, T. Hama, S. Suzuki, S. Suzuki
Journal of Physics: Conference Series 1063 Aug 2018 [Refereed]
© 2018 Institute of Physics Publishing. All rights reserved. Stress relaxation is the phenomenon where stress of materials decreases under constant strain. In several previous studies, it was found that the stress relaxation makes uniform elongati...
Ikeda Yoshimasa, Takamura Masato, Hakoyama Tomoyuki, Otake Yoshie, Kumagai Masayoshi, Suzuki Hiroshi
Tetsu-to-Hagane 104(3) 138-144 2018 [Refereed]
<p>Neutron engineering diffraction is a powerful technique which provides the information of the micro structure of steels in bulk-average, while X-ray diffraction or Electron backscatter diffraction can provide information only from the surface l...
Chiharu Sekiguchi, Tomoyuki Hakoyama, Toshihiko Kuwabara, Hiroshi Fukiharu
AIP Conference Proceedings 1896 Oct 2017 [Refereed]
© 2017 Author(s). A novel draw-bending testing method using a non-contact optical 3D deformation measuring system (ARAMIS ® , GOM) was developed to investigate the deformation process of draw-bending. Furthermore, the accuracy of the fracture pred...
Hayato Nakano, Tomoyuki Hakoyama, Toshihiko Kuwabara
AIP Conference Proceedings 1896 Oct 2017 [Refereed]
© 2017 Author(s). Hole expansion forming of a cold rolled steel sheet is investigated both experimentally and analytically to clarify the effects of material models on the predictive accuracy of finite element analyses (FEA). The multiaxial plasti...
Misc
YAMASHITA Minoru, WANG Zhigang, YOSHIDA Yoshinori, NIKAWA Makoto, HAKOYAMA Tomoyuki, INOUE Yoshihiro
PLASTOS 2(23) 701-703 2019
Conference Activities & Talks
小早川理輝, 箱山智之, DONG Wenzheng, WANG Zhigang
塑性加工連合講演会講演論文集 25 Sep 2019
遠藤喜紀, 箱山智之, WANG Zhigang
塑性加工連合講演会講演論文集 25 Sep 2019
乃万暢賢, 宇田進之輔, 桑原利彦, 箱山智之
塑性加工連合講演会講演論文集 25 Sep 2019
箱山智之, 桑原利彦
塑性加工連合講演会講演論文集 25 Sep 2019
藤井貴浩, 松野崇, RIDHA Muhamad, 浜孝之, 箱山智之, 高村正人
塑性加工春季講演会講演論文集 22 May 2019
乃万暢賢, 前田大輝, 桑原利彦, 箱山智之
自動車技術会大会学術講演会講演予稿集(CD-ROM) 17 May 2019
乃万暢賢, 前田大輝, 桑原利彦, 箱山智之
材料とプロセス(CD-ROM) 1 Mar 2019
松野崇, 藤井貴弘, 浜孝之, 箱山智之, 高村正人
材料とプロセス(CD-ROM) 1 Mar 2019
箱山智之, 桑原利彦
軽金属学会大会講演概要 10 Oct 2018
楠田義徳, 鈴木優里菜, 高村正人, 浜孝之, 箱山智之, 大竹淑恵, 鈴木進補
塑性加工連合講演会講演論文集 4 Oct 2018
Research Grants & Projects
AMADA FOUNDATION: Grant-in-Aid for Encouragement of Scientists (Young Researcher)
Project Year: Dec 2018 - Mar 2021 Investigator(s): Tomoyuki Hakoyama
JSPS: KAKENHI, Grant-in-Aid for Scientific Research (B)
Project Year: Apr 2018 - Mar 2021 Investigator(s): Masato Takamura
JSPS: Grant-in-Aid for JSPS Fellows
Project Year: Apr 2014 - Jan 2017 Investigator(s): Tomoyuki Hakoyama
Social Contribution
NUMISHEET 2018 Benchmark-1 ”Hole expansion of advanced high strength steel sheet” Co-Chair
[Organizing Member] 2018
