Structural damage identification based on sensitivity analysis of power spectral density

被引：0

作者：

Zheng, Ze-Dong ^{[1
]}

Chen, Wei-Huan ^{[1
]}

LÜ, Zhong-Rong ^{[1
]}

Liu, Ji-Ke ^{[1
]}

机构：

[1] Department of Applied Mechanics and Engineering, Sun Yat-Sen University, Guangzhou

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2014年 / 33卷 / 16期

关键词：

Damage identification; Power spectral density; Pseudo excitation method; Random vibration; Sensitivity analysis;

D O I：

10.13465/j.cnki.jvs.2014.16.014

中图分类号：

学科分类号：

摘要：

Based on the analysis of the sensitivity of structural response power spectral density with respect to the structural stiffness parameter, a new method was proposed to identify structural damages under stationary random excitations. Under stationary random excitations, the sensitivity was analysed using the pseudo excitation method. Then the finite element model updating method was applied to identify structural damages. The numerical example of a shear structure demonstrates the accuracy and efficiency of the proposed method, where only the frequency response data of finite accelerometers are needed.

引用

页码：76 / 79

页数：3

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