Dynamic design of structures under random excitation

被引：0

作者：

W. H. Tong

J. S. Jiang

G. R. Liu

机构：

[1] Mechanical & Production Engineering Department,

[2] National University of Singapore,undefined

[3] 10 Kent Ridge Crescent,undefined

[4] Singapore,undefined

[5] 119260,undefined

[6] Vibration Engineering Institute,undefined

[7] Northwestern Polytechnical University,undefined

[8] Xi'an,undefined

[9] Shaanxi,undefined

[10] China,undefined

[11] 710072,undefined

来源：

Computational Mechanics | 1998年 / 22卷

关键词：

Key words: dynamic design; expected number of crossings; response mean square; stationary Guassian process; white noise; first passage failure;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

An optimum design method to minimize the weight of a linear elastic structural system subjected to random excitations is presented. It is focused on the constraints of the first passage failure and displacement response mean square (RMS) at certain degree of freedoms. Constraints on natural frequencies and bounds of design variables are also considered in the optimization. Both correlated and un-correlated generalized random excitations are considered in the present formulation. The sensitivities of the expected number of crossings as well as the displacement RMS with respect to the design variables are also derived. The present method is applicable to stationary Guassian random excitations. Computational examples show the feasibility and efficiency of the proposed method.

引用

页码：388 / 394

页数：6