A level set based topology optimization method using the augmented lagrangian method

Shintaro Yamasaki*, Tsuyoshi Nomura, Atsushi Kawamoto, Kazuo Sato, Kazuhiro Izui, Shinji Nishiwaki

*この研究の対応する著者

研究成果: Article査読

抄録

This paper deals with a new topology optimization method based on the level set method that incorporates the augmented Lagrangian method. In previously proposed level set based structural optimization methods, dealing with multiple constraints has been problematic yet this is typically required for real-world design problems. Incorporating the augmented Lagrangian method in the structural optimization method proposed here enables the handling of multiple constraints. The level set function is discretized using finite elements and updated based on the design sensitivity of the augmented Lagrangian with respect to the discretized level set function. In this paper, the newly proposed structural optimization method is applied to the minimum compliance problem and a compliant mechanism design problem. In the formulations of these problems, a perimeter constraint is imposed to overcome the ill-posedness of the level set method-based structural optimization. Some numerical examples that include multiple constraints are provided to confirm the validity of the method, and we show that appropriate optimal structures are obtained.

本文言語English
ページ(範囲)3192-3200
ページ数9
ジャーナルNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
75
760
DOI
出版ステータスPublished - 2009 12月
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 産業および生産工学

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