演算子積分時間領域境界要素法による2次元異方性飽和多孔質弾性体中の波動解析

抄録

This paper presents a convolution quadrature time-domain boundary element method for wave propagation in general anisotropic fluid-saturated porous solids. Wave analyses for general anisotropic fluid-saturated porous solids are particularly helpful for understanding wave propagation in rocks. Boundary element method (BEM) is known as an effective numerical approach for wave propagation because BEM can deal with infinite or semi-infinite regions without any modifications. Convolution quadrature time-domain boundary element method (CQ-BEM) has been studied by several researchers to improve the numerical instability of the conventional timedomain BEM. In this paper, a new CQ-BEM formulation for general anisotropic fluid-saturated porous solids is proposed. The formulation proposed herein is based on Biot's theory. Basic problems are solved to verify our proposed method.