[1]杜秀丽,汪凤泉.结构损伤识别的周期小波方法[J].东南大学学报(自然科学版),2006,36(4):609-612.[doi:10.3969/j.issn.1001-0505.2006.04.024]
 Du Xiuli,Wang Fengquan.Method of structural damage identification based on periodic wavelet transform[J].Journal of Southeast University (Natural Science Edition),2006,36(4):609-612.[doi:10.3969/j.issn.1001-0505.2006.04.024]
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结构损伤识别的周期小波方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
36
期数:
2006年第4期
页码:
609-612
栏目:
土木工程
出版日期:
2006-07-20

文章信息/Info

Title:
Method of structural damage identification based on periodic wavelet transform
作者:
杜秀丽 汪凤泉
东南大学土木工程学院, 南京 210096
Author(s):
Du Xiuli Wang Fengquan
College of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
结构损伤识别 周期小波变换 曲率振型 损伤因子
Keywords:
structural damage identification periodic wavelet transform curvature mode shape damage factor
分类号:
TU311.3;O346.5
DOI:
10.3969/j.issn.1001-0505.2006.04.024
摘要:
通过对结构损伤前后模态特征的变化进行分析,利用损伤结构的位移振型函数构造出曲率振型函数γi(x),然后再在曲率振型函数的基础上提出一个用于探测和评定损伤程度的新指标——损伤因子r(x)=∑i∈Idγ2i(x); 基于小波分析的方法,对损伤因子进行周期小波变换,通过小波系数的取值范围提出了一种结构损伤定位和损伤程度的评估方法.数值仿真表明,这是一种行之有效的损伤识别方法.
Abstract:
After analyzing the change of modal character before and after the structure damage and computing the curvature mode shape γi(x) by displacement shape, a new index, damage factor r(x)=∑i∈Idγ2i(x)which can be used in locating and estimating damage, is presented; Based on periodic wavelet analysis, the damage factor is transformed into wavelet coefficients, and an estimation of damage location and damage extent is presented by ranging the wavelet coefficients. The numerical simulation results verify the effectiveness of the method.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(50278017).
作者简介: 杜秀丽(1974—),女,博士生; 汪凤泉(联系人),男,教授,博士生导师.
更新日期/Last Update: 2006-07-20