A Coupling Method of Boundary Element Method and Generalized Ray Theory for Elastic Wave Scattering in a Thick Plate

2003 ◽  
Author(s):  
K. Kimoto
Keyword(s):  
Boundary Element Method ◽  
Elastic Wave ◽  
Boundary Element ◽  
Wave Scattering ◽  
Thick Plate ◽  
Coupling Method ◽  
Ray Theory ◽  
Elastic Wave Scattering ◽  
Element Method

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.

Study on Numerical Methods for Acoustic Radiation of Open Structure

2010 ◽  
Vol 439-440 ◽  
pp. 692-697
Author(s):  
Li Jun Li ◽  
Xian Yue Gang ◽  
Hong Yan Li ◽  
Shan Chai ◽  
Ying Zi Xu
Keyword(s):  
Boundary Element Method ◽  
Numerical Methods ◽  
Boundary Element ◽  
Acoustic Radiation ◽  
Coupling Method ◽  
Open Structure ◽  
Acoustic Coupling ◽  
Infinite Element Method ◽  
Direct Boundary Element Method ◽  
Element Method

For acoustic radiation of open thin-walled structure, it was difficult to analyze directly by analytical method. The problem could be solved by several numerical methods. This paper had studied the basic theory of the numerical methods as FEM (Finite Element Method), BEM (Boundary Element Method) and IFEM (Infinite Element Method), and the numerical methods to solve open structure radiation problem. Under the premise of structure-acoustic coupling, this paper analyzed the theory and flow of the methods on acoustic radiation of open structure, including IBEM (Indirect Boundary Element Method), DBEM (Direct Boundary Element Method) coupling method of interior field and exterior field, FEM and BEM coupling method, FEM and IFEM coupling method. This paper took the open structure as practical example, and applied the several methods to analyze it, and analyzed and compared the several results to get relevant conclusions.

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