The Local Optimum in Topology Optimization of Compliant Mechanisms

摘要：

　　The local optimum is widespread in topology optimization of compliant mechanisms due to the non-convex objective function.And sometimes the result is far always from the global optimum.A scheme composed of two steps is proposed to avoid most of the local optimum in topology optimization of compliant mechanisms in this article.Unlike the traditional method which starts from a uniform guess,the second step of the scheme starts from the upper bound of the objective function which is the objective function of the global optimum in some cases.The numerical example indicates that this method is useful.The theoretical upper bounds of the objective function in two formulations are deduced.And it is pointed out that in some cases,topology optimization of compliant mechanisms is a process to find a rigid-body mechanism with a certain geometrical advantage.And the geometrical advantage is depended on the boundary condition.

关键词： Local optimum Compliant mechanisms Topology optimization

作者: Qi Chen Xianmin Zhang

作者单位: Guangdong Provincial Key Laboratory of Precision Equipment and Manufacturing Technology, South China University of Technology,Guangzhou, China

会议类型: 国际会议

会议名称: 2016中国机构与机器科学国际会议

会议地点: 广州

会议语种:英文

页码: 621-632

在线出版日期: 2016-12-15（万方平台首次上网日期，不代表论文的发表时间）