Boundary element-free method (BEFM) for two-dimensional elastodynamic analysis using Laplace transform

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 (c) 2005 John Wiley & Sons, Ltd.