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SCATTERING AND DYNAMIC STRESS CONCENTRATION OF SH WAVE BY INTERFACE CYLINDRICAL ELASTIC INCLUSION

Liu Diankui, Tian Jiayong(Harbin Engineering University,Harbin,150001)  
Green’s function method is introduced to investigate the problem of SH wave scattering and dynamic stress concentration in bi material structure possessing cylindrical interface elastic inclusion.Displacement function for an elastic half space with half cylindrical elastic inclusion bearing steady state line source force on horizontal surface is first given.Regarding the bi material structure as two half spaces bounded by horizontal surfaces and looking upon the above displacement function as Green’s function,the integral equations can be obtained by use of continuity conditions at the interface.Finally,numerical examples of dynamic stress concentration are given,and the relations of dynamic stress concentration factors versus different media combinations are illustrated.
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