期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 295, 期 -, 页码 525-542出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2015.07.015
关键词
Shape and topology optimization; Length scale; Maximal inscribable ball; Skeleton of structure; Level set method
资金
- Program for Changjiang Scholars and Innovative Research Team in University [IRT13017]
A method is proposed for the control of minimum/ maximum length scale in the level set based structural topology optimization. The minimum/maximum length scale of structure is characterized by using the concept of smallest/biggest maximal inscribable ball. In order to prevent trivial zero minimum length scale, the skeleton of structure is utilized and trimmed. The control of length scale is realized by constraining the distance from boundary to skeleton, and the distance is explicitly constructed by using the highly efficient fast marching method. Numerical examples in two dimensions are investigated. (C) 2015 Elsevier B.V. All rights reserved.
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