Topology optimization of continuum structures under buckling constraints

被引：95
|
作者：
Gao, Xingjun [1 ]
Ma, Haitao [1 ]
机构：
[1] S China Univ Technol, Dept Civil Engn, State Key Lab Subtrop Bldg Sci, Guangzhou 510640, Guangdong, Peoples R China
来源：
COMPUTERS & STRUCTURES | 2015年 / 157卷
关键词：
Topology optimization; Buckling constraints; Pseudo buckling modes; Pseudo mode identification; Two-phase optimization algorithms; DESIGN; EIGENFREQUENCIES; EIGENVALUES; STABILITY; TRUSSES; STRESS;
D O I：
10.1016/j.compstruc.2015.05.020
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This paper presents a study on topology optimization of continuum structures under buckling constraints. New algorithms are developed for minimization of structural compliance considering constraints on volume and buckling load factors. The SIMP (Solid Isotropic Material with Penalization) material model is employed and nodal relative densities are used as topology design variables. A new approach based on the eigenvalue shift and pseudo mode identification is proposed for eliminating the effect of pseudo buckling modes. Two-phase optimization algorithms are also proposed for achieving better optimized designs. Numerical examples are presented to illustrate the effectiveness of the new methods. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：142 / 152
页数：11
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