ACCURACY OF FINITE-ELEMENT BASED SHAPE DESIGN SENSITIVITY ANALYSIS

被引：46

作者：

YANG, RJ

CHOI, KK

机构：

[1] Univ of Iowa, Cent for Computer, Aided Design, Iowa City, IA, USA, Univ of Iowa, Cent for Computer Aided Design, Iowa City, IA, USA

来源：

JOURNAL OF STRUCTURAL MECHANICS | 1985年 / 13卷 / 02期

基金：

美国国家科学基金会;

关键词：

MATHEMATICAL TECHNIQUES - Sensitivity Analysis;

D O I：

10.1080/03601218508907498

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Accuracy of finite element based shape design sensitivity analysis, for use in shape design optimization, is analyzed and tested. A shape design sensitivity formulation that uses stress averaging to treat stress constraint functionals is presented. A smooth boundary parameterization is introduced to avoid the 'Babuska paradox' and to improve accuracy of design sensitivity analysis. Accuracy of design sensitivity analysis with displacement and hybrid stress finite element formulations is compared. Good accuracy is obtained using higher order displacement finite elements, such as linear stress triangular and 8-noded isoparametric elements.

引用

页码：223 / 239

页数：17

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