Identification of a crack in a beam based on the finite element method of a B-spline wavelet on the interval

被引：45

作者：

Xiang, J. W. ^{[1
]}

Chen, X. F. ^{[1
]}

Li, B. ^{[1
]}

He, Y. M. ^{[1
]}

He, Z. J. ^{[1
]}

机构：

[1] Xian Jiaotong Univ, Sch Mech Engn, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

JOURNAL OF SOUND AND VIBRATION | 2006年 / 296卷 / 4-5期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.jsv.2006.02.019

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The model-based forward and inverse problems in the diagnosis of structural crack location and size by using the finite element method of a B-spline wavelet on the interval (FEM BSWI) were studied. First the crack and uncracked elements of BSWI were built to solve the forward problem. The first three frequencies influencing functions of normalized crack location and size are approximated by means of surface-fitting techniques. Then the first three measured natural frequencies are employed as inputs of the functions. The intersection of the three frequencies contour lines predicted the normalized crack location and size. Both the numerical and experimental studies verified the validity of the BSWI elements in solving crack singular problems with high performance. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1046 / 1052

页数：7

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