Interaction of a circular cavity and a beeline crack in right-angle plane impacted by SH-wave

被引：7
作者：
齐辉 [1 ]
折勇 [1 ]
刘殿魁 [1 ]
机构：
[1] College of Aerospace and Civil Engineering,Harbin Engineering University
来源：
Journal of Harbin Institute of Technology(New series) | 2009年 / 04期
关键词：
right-angle plane; scattering of SH-wave; circular cavity; crack; dynamic stress concentration;
D O I：
暂无
中图分类号：
O346.1 [断裂理论];
学科分类号：
080102 ;
摘要：
The problem of scattering of SH-wave by a circular cavity and an arbitrary beeline crack in right-angle plane was investigated using the methods of Green’s function,complex variables and muti-polar coordinates.Firstly,we constructed a suitable Green’s function,which is an essential solution to the displacement field for the elastic right-angle plane possessing a circular cavity while bearing out-of-plane harmonic line source load at arbitrary point.Secondly,based on the method of crack-division,integration for solution was established,then expressions of displacement and stress were obtained while crack and circular cavities were both in existence.Finally,the dynamic stress concentration factor around the circular cavity and the dynamic stress intensity factor at crack tip were discussed to the cases of different parameters in numerical examples.Calculation results show that the crack produces adverse engineering influence on both of the dynamic stress concentration factor and the dynamic stress intensity factor.
引用
收藏
页码：548 / 553
页数：6
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