Application of stochastic finite element method to optimal design of structures

被引:14
|
作者
Lee, BW [1 ]
Lim, OK
机构
[1] Dongeui Inst Technol, Pusan 614715, South Korea
[2] Pusan Natl Univ, Pusan 609735, South Korea
关键词
sensitivity analysis; optimum design; direct differentiation method; perturbation method; stochastic finite element method;
D O I
10.1016/S0045-7949(98)00064-9
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This paper presents an approach for extension of the optimal design method to include the structural uncertainty with the random parameters. The formulation is based on the perturbation method. A method of direct differentiation for calculating sensitivity coefficients in regard to the governing equation, the first-order perturbed equation, the second-order perturbed equation is derived. The numerical results are specifically noted, where the stiffness parameter and external load are treated as random variables. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:491 / 497
页数:7
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