Design of compliant thermal actuators using structural optimization based on the level set method

Takayuki Yamada*, Shintaro Yamasaki, Shinji Nishiwaki, Kazuhiro Izui, Masataka Yoshimura

*この研究の対応する著者

研究成果: Conference contribution

抄録

Compliant mechanisms are a new type of mechanism, designed to be flexible to achieve a specified motion as a mechanism. Such mechanisms can function as compliant thermal actuators in Micro-Electro Mechanical Systems (MEMS) by intentionally designing configurations that exploit thermal expansion effects in elastic material when appropriate portions of the mechanism structure are heated. This paper presents a new structural optimization method for the design of compliant thermal actuators based on the level set method and the Finite Element Method (FEM). First, an optimization problem is formulated that addresses the design of compliant thermal actuators considering the magnitude of the displacement at the output location. Next, the topological derivatives that are used when introducing holes during the optimization process are derived. Based on the optimization formulation and the level set method, a new structural optimization algorithm is constructed that employs the FEM when solving the equilibrium equations and updating the level set function. The re-initialization of the level set function is performed using a newly developed geometry-based re-initialization scheme. Finally, several design examples are provided to confirm the usefulness of the proposed structural optimization method.

本文言語English
ホスト出版物のタイトル2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008
ページ1217-1225
ページ数9
PART B
出版ステータスPublished - 2009
外部発表はい
イベント2008 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008 - New York City, NY, United States
継続期間: 2008 8月 32008 8月 6

出版物シリーズ

名前2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008
番号PART B
1

Conference

Conference2008 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008
国/地域United States
CityNew York City, NY
Period08/8/308/8/6

ASJC Scopus subject areas

  • 人工知能
  • 計算理論と計算数学
  • 産業および生産工学
  • 機械工学

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