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Boundary element‐free method (BEFM) for two‐dimensional elastodynamic analysis using Laplace transform
Authors:K M Liew  Yumin Cheng  S Kitipornchai
Abstract:In this paper, we present a direct meshless method of boundary integral equation (BIE), known as the boundary element‐free method (BEFM), for two‐dimensional (2D) elastodynamic problems that combines the BIE method for 2D elastodynamics in the Laplace‐transformed domain and the improved moving least‐squares (IMLS) approximation. The formulae for the BEFM for 2D elastodynamic problems are given, and the numerical procedures are also shown. The BEFM is a direct numerical method, in which the basic unknown quantities are the real solutions of the nodal variables, and the boundary conditions can be implemented directly and easily that leads to a greater computational precision. For the purpose of demonstration, some selected numerical examples are solved using the BEFM. Copyright © 2005 John Wiley & Sons, Ltd.
Keywords:moving least‐squares approximation  improved moving least‐squares approximation  weighted orthogonal function  boundary integral equation  meshless/mesh‐free method  boundary element‐free method  elastodynamics
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