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《Journal of Vibration and Shock》 2014-12
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Far field solution to SH-wave scattered by an interface cavity

CHEN Zhi-gang;Department of Mechanics and Civil Engineering,Jinan University;Key Laboratory of Disaster Forecast and Control in Engineering,Ministry of Education Jinan University;  
The far field solution to SH-wave scattered by an arbitrary shape cavity on an interface was investigated with the methods of Green's function and complex function.A suitable Green's function was constructed,it was the fundamental solution to displacement field for an elastic half space with any cavity under anti-plane harmonic line source loading exerted at an arbitrary point on its horizontal surface.The model of SH-wave scattered by a cavity on the interface of two different media could be built based on the idea of conjunction.Then a series of the first kind of Fredholm integral equations for determining the displacement mode of scattered wave in far field and scattering cross-section were set up using Green's function.The numerical examples were given and the far-field characteristics of SH wave scattered by an elliptical cavity and a quadrate one under different media combinations were analyzed.
【Fund】: 教育部重点实验室资助项目;; 广东省高等学校科研型重点实验室资助项目
【CateGory Index】: O347.4
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