WIT Press


2-D Time Domain BEM For Scattering Of Elastic Waves In Anisotropic Solids

Price

Free (open access)

Paper DOI

10.2495/BT940171

Volume

8

Pages

7

Published

1994

Size

477 kb

Author(s)

C.-Y. Wang & J.D. Achenbach

Abstract

2-D time domain BEM for scattering of elastic waves in anisotropic solids C.-Y. Wang & J.D. Achenbach Center for Quality Engineering and Failure Prevention, Northwestern University, Evanston, ABSTRACT An efficient 2-D time-domain BEM has been developed to analyze the scattering of elastic waves in anisotropic solids. Integral expressions for the Green's functions given by Wang and Achenbach [1] are used. The simple structure of these expressions allows the analytical evaluation of the integrals over each element and over each time-step. Moreover, certain singular multiple integrals are reduced to regular line integrals over a unit circle. The method is demonstrated by numerical examples for scattering of a plane transient wave by a cylindrical cavity. l. INTRODUCTION Many important media in the physical world, e.g., the Earth, ice, and composites, are anisotropic elastic solids, for which the elastic constants vary with direction. Explicit expressions for elastodynamic Green's f

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