文献类型：期刊文献

英文题名：Strain energy numerical technique for structural damage detection

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

年份：2012

卷号：219

期号：5

起止页码：2424

外文期刊名：APPLIED MATHEMATICS AND COMPUTATION

收录：;EI(收录号：20124515637112);WOS:【SCI-EXPANDED(收录号:WOS:000310504500006)】；

基金：This work is supported by the National Natural Science Foundation of China (51205133, 60974061, 11172102), Shanghai Natural Science Foundation (11ZR1409000), Ph.D. Programs Foundation of Ministry of Education of China (20110074120007), Fundamental Research Funds for the Central Universities (WG0914008).

语种：英文

外文关键词：Structural damage detection; Strain energy; Power spectral density; Damage index; Statistical method

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.