Strain energy numerical technique for structural damage detection

被引：10
|
作者：
Hu, Ming-Hui [1 ]
Tu, Shan-Tung [1 ]
Xuan, Fu-Zhen [1 ]
Xia, Chun-Ming [1 ]
Shao, Hui-He [2 ]
机构：
[1] E China Univ Sci & Technol, MOE, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China
来源：
APPLIED MATHEMATICS AND COMPUTATION | 2012年 / 219卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Structural damage detection; Strain energy; Power spectral density; Damage index; Statistical method; IDENTIFICATION; SENSITIVITY; CREEP;
D O I：
10.1016/j.amc.2012.08.078
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
In this paper, a computationally attractive damage index method is proposed for structural damage detection of cylindrical shell. It provides an insight to the extent of structural damage. Strain energy values computed for undamaged and damaged states are used in the corresponding damage index algorithms. It is derived from two parameters as moment response power spectral density and curvature response power spectral density. For all measured mode shapes, the damage index is defined by using the statistical parameter of relative root mean-square error of case before and after damage. The algorithm is applied to two numerical examples and its efficiency is demonstrated through damage simulations. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码：2424 / 2431
页数：8
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