Damage identification of the frame structure based on multi-resolution analysis and wavelet energy curvature

被引：0

作者：

Chang P. ^{[1
,2
]}

Yang N. ^{[1
,2
]}

Zhang G. ^{[1
]}

机构：

[1] School of Civil Engineering, Beijing Jiaotong University, Beijing

[2] Beijing's Key Laboratory of Structural Wind Engineering and Urban Wind Environment, Beijing

来源：

Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | 2016年 / 48卷 / 06期

关键词：

Damage identification; Difference of energy curvature; Frame structure; Multi-resolution; Time history analysis; Wavelet analysis;

D O I：

10.11918/j.issn.0367-6234.2016.06.027

中图分类号：

学科分类号：

摘要：

The three-story frame models with different damage conditions were established to study the application of wavelet analysis in damage identification. The time history analysis was applied, and the response data were used to identify the damage location through wavelet analysis. The different damage identification indexes are discussed, and the results show that the wavelet packet energy curvature is better than the other to identify local damage. Then the sensitivities of input signals are discussed, and the results show that the acceleration is more sensitive to local damage than velocity and displacement. In the end, the meshing size, the acceleration sensor location and the sampling frequency are discussed, and the results show that all of them affect the damage location identification result. The accuracy of the damage localization increases when the meshing size decreases, the distance between the acceleration sensor location and the damage location decreases, and the sampling frequency increases. © 2016, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.

引用

页码：170 / 176

页数：6

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