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Advanced development of time‐domain BEM for two‐dimensional scalar wave propagation

1990; Wiley; Volume: 29; Issue: 5 Linguagem: Inglês

10.1002/nme.1620290507

1097-0207

A. S. M. Israil, P. K. Banerjee,

Geotechnical Engineering and Underground Structures

Abstract An improved formulation for solving 2D transient scalar wave propagation problems by the Boundary Element Method (BEM) is presented. The kernels presented are simpler and better behaved than those that have appeared in the published literature. An appropriate set of temporal shape functions for linear variation is used. For spatial variations isoparametric quadratic elements are used. All of these represent significant improvements over the present level of sophistication in the analysis of 2D transient scalar problems. The algorithm is implemented in a general purpose boundary element code known as GPBEST.