Topology optimization of geometrically and materially nonlinear structures

摘要：

This paper presents the latest research on topology optimization of geometrically and materially nonlinear structures using a modified bi-directional evolutionary optimization (BESO) method. The complementary and external works are selected as the objective functions for nonlinear structures under a prescribed load and displacement respectively. The corresponding sensitivity numbers are derived using an adjoint method. The filtering scheme is used to obtain checkerboard-free and mesh-independent designs. Examples show considerable differences in topologies and stiffness of the optimal designs using linear and nonlinear finite element analyses. It is found that the design using nonlinear finite element analysis is always better than that using linear finite element analysis when large displacement is involved.

作者: Xiao-dong Huang Yi-min Xie Guo-xing Lu

作者单位: School of Civil, Environmental and Chemical Engineering, RMIT University,Melbourne 3001, Australia Faculty of Engineering and Industrial Sciences, Swinburne University of Technology,Victoria 3122, Au

会议类型: 国际会议

会议名称: The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)

会议地点: 上海

会议语种:英文

页码: 421-428

在线出版日期: 2007-06-11（万方平台首次上网日期，不代表论文的发表时间）