Diffraction of plane SV waves by a cavity in poroelastic half-space

查看全文 作　　者：Liang Jianwen and Liu Zhongxian Department of Civil Engineering, Tianjin University, Tianjin 300072, China Professor;PhD Candidate

出　　处：《Earthquake Engineering and Engineering Vibration》索引2009年第8卷第1期,共18页

基　　金：Program for New Century Excellent Talents in University Under Grant No. NCET-05-0248;the Key Program for Applied Basic Research of Tianjin Municipality Under Grant No. 07JCZDJC10100 摘　　要：This paper presents an indirect boundary integration equation method for diffraction of plane SV waves by a 2-D cavity in a poroelastic half-space.The Green’s functions of compressive and shear wave sources are derived based on Biot’s theory. The scattered waves are constructed using fi ctitious wave sources close to the boundary of the cavity, and their magnitudes are determined by the boundary conditions. Verifi cation of the accuracy is performed by: (1) checking the satisfaction extent of the boundary conditions, (2) comparing the degenerated solutions of a single-phased case with wellknown solutions, and (3) examining the numerical stability of the solutions. The nature of diffraction of plane SV waves around a cavity in a poroelastic half-space is investigated by numerical examples. 关键词：饱和半空间平面SV波衍射边界条件数值稳定比奥理论格林函数方程法

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Diffraction of plane SV waves by a cavity in poroelastic half-space

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