Discussion on symmetry of optimum topology design
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论文类型：期刊论文
发表时间：2011-11-01
发表刊物：STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
收录刊物：EI、SCIE、Scopus
卷号：44
期号：5
页面范围：713-717
ISSN号：1615-147X
关键字：Topology optimization; Symmetry; Non-symmetry
摘要：Recent study by Rozvany discussed an important topic in structural topology optimization: non-uniqueness and symmetry. This paper demonstrates that for the frame topology optimization with frequency objective or frequency constraints, the topology optimum is not symmetric even when the geometry, material distribution and ground structure are symmetric. Two benchmark examples with fundamental frequency constraints support our view. Nonlinear and non-convex constraints are contributors to non-symmetric optimum solution for the class of topology optimization problems considered here.