SIZING DESIGN SENSITIVITY ANALYSIS OF DYNAMIC FREQUENCY-RESPONSE OF VIBRATING STRUCTURES

被引：13

作者：

CHOI, KK

LEE, JH

机构：

[1] Department of Mechanical Engineering and Center for Computer Aided Design, College of Engineering, The University of Iowa, Iowa City, IA

来源：

JOURNAL OF MECHANICAL DESIGN | 1992年 / 114卷 / 01期

关键词：

D O I：

10.1115/1.2916911

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A continuum design sensitivity analysis method of dynamic frequency response of structural systems is developed using the adjoint variable and direct differentiation methods. A variational approach with a non-selfadjoint operator for complex variable is used to retain the continuum elasticity formulation throughout derivation of design sensitivity results. Sizing design variables such as thickness and cross-sectional area of structural components are considered for the design sensitivity analysis. A numerical implementation method of continuum design sensitivity analysis results is developed using postprocessing analysis data of COSMIC/NASTRAN finite element code to get the design sensitivity information of displacement and stress performance measures of the structures. The numerical method is tested using basic structural component such as a plate supported by shock absorbers and a vehicle chassis frame structure for sizing design variables. Accurate design sensitivity results are obtained even in the vicinity of resonance.

引用

页码：166 / 173

页数：8

共 23 条

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