Optimal topology selection of continuum structures with displacement constraints

被引:47
作者
Liang, QQ
Xie, YM
Steven, GP
机构
[1] Victoria Univ Technol, Sch Built Environm, Melbourne, Vic 8001, Australia
[2] Univ Sydney, Dept Aeronaut Engn, Sydney, NSW 2006, Australia
基金
澳大利亚研究理事会;
关键词
finite element analysis; performance based optimization; performance evaluation; stiffness; selection; topology;
D O I
10.1016/S0045-7949(00)00018-3
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This paper deals with the optimal topology selection of continuum structures subject to displacement constraints by using the performance-based design concept. The optimal topology of a continuum structure is generated by gradually eliminating underutilized elements from the discretized design domain. A performance index is developed for monitoring the optimization process and is used as a termination criterion in the optimization algorithm so that the global optimum can be selected from the optimization history. Maximizing the performance index in the design space is proposed as the performance-based optimization criterion. The performance index can be utilized to compare the efficiency of structural topologies produced by different continuum topology optimization methods. Several examples are provided to demonstrate the capabilities of the performance-based optimization approach in selecting the best configuration for the minimum-weight design of continuum structures with maximum stiffness. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:635 / 644
页数:10
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