Application of the boundary element method to elastic wave scattering by irregular defects

1990 ◽  
Vol 9 (2-3) ◽  
pp. 113-127 ◽  
Author(s):  
Paul J. Schafbuch ◽  
R. Bruce Thompson ◽  
Frank J. Rizzo
Keyword(s):  
Boundary Element Method ◽  
Elastic Wave ◽  
Boundary Element ◽  
Wave Scattering ◽  
Elastic Wave Scattering ◽  
Element Method

Rayleigh-wave scattering by shallow cracks using the indirect boundary element method

2009 ◽  
Vol 6 (3) ◽  
pp. 221-230 ◽  
Author(s):  
R Ávila-Carrera ◽  
A Rodríguez-Castellanos ◽  
F J Sánchez-Sesma ◽  
C Ortiz-Alemán
Keyword(s):  
Boundary Element Method ◽  
Rayleigh Wave ◽  
Boundary Element ◽  
Wave Scattering ◽  
Indirect Boundary Element Method ◽  
Rayleigh Wave Scattering ◽  
Element Method

Boundary Element Method for Horizontally Polarized Shear Wave Scattering by an Elliptical Cavity in Orthotropic Graded Saturated Porous Media

2014 ◽  
Vol 638-640 ◽  
pp. 412-415
Author(s):  
Jun Qiao Liu ◽  
Hui Qin Duan ◽  
Xing Li
Keyword(s):  
Boundary Element Method ◽  
Boundary Element ◽  
Shear Wave ◽  
Wave Scattering ◽  
Mass Density ◽  
Linear Equations ◽  
Boundary Surface ◽  
Dirac Delta ◽  
Elliptical Cavity ◽  
Element Method

The shear wave scattering due to an elliptical cavity in an infinitely long strip of orthotropic graded saturated porous (OGSP) media is studied with the boundary element method (BEM). The shear modulus and the mass density of the OGSP are assumed to have exponential forms. Using Biot's theory, the governing equations are developed for OGSP. The fundamental function is obtained by separating variables in terms of the Dirac delta function. A system of linear equations describing the displacement on the ellipse is obtained by applying the linear BEM. The numerical results for the normalized boundary surface displacements in the scattering field are presented with different OGSP coefficients. The effects of many parameters are evaluated with numerical examples. These results are expected to have great technical interest for determining boundary stability when elastic waves interact with OGSP cavities.

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