An acceleration method for the BEM-based cooling simulation of injection molding

Mold cooling process in injection molding is of great importance and most cooling analyses are based on the boundary element (BEM) approach. The BEM leads to dense influence matrices, which greatly affect the computational efficiency and scale. In this paper, an acceleration method is presented to speed Lip the solution procedure. In this method, the dense BEM matrix is split into a sparse dominant matrix and a dense residual matrix. The residual item is transformed from the inner iteration to the outer iteration, and the dominant item can be stored in the RAM memory so that the resulting system of equations will be solved much more quickly. Numerical experiments show that this developed approach is a cost-effective method for BEM-based simulation of injection mold cooling. (C) 2009 Elsevier Ltd. All rights reserved.