Multi-scale topology optimization considering elastoplastic composite material

• Hoshiba Hiroya

  Tohoku University

• OGAWA Shun

  Tohoku University

• KATO Junji

  Nagoya University

• KYOYA Takashi

  Tohoku University

Bibliographic Information

Other Title

• 複合材料の弾塑性挙動を考慮したマルチスケールトポロジー最適化

Abstract

The present study proposes topology optimization of microstructure considering elastoplastic deformation based on a decoupling multi-scale analysis. Energy absorption capacity of macrostructure is maximized under a prescribed material volume of microstructure. It is assumed that microstructure consists of a two-phase material based on elastoplastic von Mises model and that macrostructure is modeled with anisotropic Hill’s elastoplasticity. In this study, we extend the analytical sensitivity method used for mono-scale analysis to the decoupling multi-scale analysis and propose a framework of new multi-scale topology optimization, which can reduce the computational costs with keeping sensitivities highly accurate. It is verified by a series of numerical examples that the proposed method provides reliable optimization results and has a great potential for advanced material design.

Journal

• Transactions of the Japan Society for Computational Engineering and Science

  Transactions of the Japan Society for Computational Engineering and Science 2018 (0), 20180015-20180015, 2018-11-22

  JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE

Keywords

• Topology optimization
• Elastoplasticity
• Multi-scale analysis
• Homogenization
• Sensitivity

Details

• CRID: 1390564238048417408
• NII Article ID: 130007520834
• DOI: 10.11421/jsces.2018.20180015
• ISSN: 13478826
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed