.A Treatment for Truncated Boundary in a Half-Space with 2-D Rayleigh Wave BEM

被引：0

作者：

Ju, Taeho ^{[1
]}

Cho, Younho ^{[1
]}

Phan, Haidang ^{[1
]}

Achenbach, Jan D. ^{[2
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, Busan 609735, South Korea

[2] Northwestern Univ, Evanston, IL 60208 USA

来源：

JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING | 2011年 / 31卷 / 06期

关键词：

BEM; Cavity; Truncated Boundary; Rayleigh Wave; Elastic Half-Space;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Analysis of two-dimensional Rayleigh wave scattering pattern by a surface defect is studied through modified boundary element method. BEM proposed in this paper has special treatment at each end of boundary which should have the Rayleigh wave go away without any generation of virtual reflections. It is shown that treatment for truncated boundary which is used to model two-dimensional Rayleigh waves' behavior in an elastic half-space is successfully implemented. To check numerical results' accuracy, time domain IFFT signal of the displacements is presented. Improvement on getting rid of unwanted influence of truncated boundary induced by 2-D Rayleigh waves on a flat surface of an elastic half-infinite medium is shown. As a final goal, the numerical results of Rayleigh wave scattering trend are plotted and they are compared with theoretical curves to prove its accuracy.

引用

页码：650 / 655

页数：6

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