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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:QiHui,ShiYong,LIU Dian-kui.Interaction of a circular cavity and a beeline crack in right-angle plane impacted by SH-wave[J].Journal of Harbin Institute Of Technology(New Series),2009,16(4):548-553.DOI:10.11916/j.issn.1005-9113.2009.04.020.
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Interaction of a circular cavity and a beeline crack in right-angle plane impacted by SH-wave
Author NameAffiliation
QiHui College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China 
ShiYong College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China 
LIU Dian-kui College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China 
Abstract:
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.
Key words:  right-angle plane  scattering of SH-wave  circular cavity  crack  dynamic stress concentration
DOI：10.11916/j.issn.1005-9113.2009.04.020
Clc Number:O346.1
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