Longitudinal wave propagation. Part II - Analysis of crack influence

被引：23
|
作者：
Krawczuk, Marek
Grabowska, Joanna
Palacz, Magdalena
机构：
[1] Polish Acad Sci, Inst Fluid Flow Machinery, PL-80952 Gdansk, Poland
[2] Gdansk Tech Univ, Dept Elect Engn & Automat, PL-80952 Gdansk, Poland
来源：
JOURNAL OF SOUND AND VIBRATION | 2006年 / 295卷 / 3-5期
关键词：
D O I：
10.1016/j.jsv.2005.12.049
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The aim of this paper is to introduce new spectral finite elements for damage detection in cracked rods. The four new spectral elements are based on the elementary, Love, Mindlin-Herrmann, and three-mode theories of rods. For all the models the crack is substituted by means of a dimensionless spring. Numerical examples show the influence of a fatigue, non-propagating, open crack on wave propagation in rods. For the models analysed differences in behaviour of the longitudinal waves are observed. The differences between signals reflected from the crack in the proposed models are functions of the excitation signal frequency. (c) 2006 Flsevier Ltd. All rights reserved.
引用
收藏
页码：479 / 490
页数：12
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