Damage identification of a plate based on response sensitivity analysis in time domain

被引：0
作者：
Fu, Ye-Zhen [1 ]
Wei, Zi-Tian [1 ]
Lü, Zhong-Rong [1 ]
Jiu, Ji-Ke [1 ]
机构：
[1] Department of Applied Mechanics, Sun Yat-sen University, Guangzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2015年 / 34卷 / 04期
关键词：
Damage identification; Model updating; Plate; Response sensitivity;
D O I：
10.13465/j.cnki.jvs.2015.04.020
中图分类号：
学科分类号：
摘要：
A response sensitivity-based approach was presented to identify local damages in an isotropic plate structure using the finite element model updating. The local damage was considered as a reduction of elemental Young's modulus of the plate, the FE dynamic equations of the plate were built. The forced vibration responses of the plate under external excitations were obtained with Newmark direct integration. For its damage identification, a response sensitivity-based finite element model updating approach was used to identify local damages of the plate in time domain. Numerical examples showed that the proposed method is effective to identify local damages of plates; good identified results can be obtained with short time histories of a few measurement points, and it is insensitive to the simulated measurement noise. ©, 2015, Chinese Vibration Engineering Society. All right reserved.
引用
收藏
页码：117 / 120
页数：3
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