Abstract
ABSTRACT: Numerical simulation for Resin Transfer Molding manufacturing process is attempted by using theeXtended Finite Element Method (XFEM) combined with the level set method. XFEM allows to obtaining a goodnumerical precision of the pressure near the resin flow front, where its gradient is discontinuous. The enriched shapefunctions of XFEM are derived by using the level set values so as to correctly describe the interpolation with the resinflow front. In addition, the level set method is used to transport the resin flow front at each time step during themold filling. The level set values are calculated by an implicit characteristic Galerkin FEM. The multi-frontal solver ofIPSAP is adopted to solve the system. This work is validated by comparing the obtained results with analyticsolutions. Moreover, a localization method of XFEM and level set method is proposed to increase the computingefficiency. The computation domain is reduced to the small region near the resin flow front. Therefore, the totalcomputing time is strongly reduced by it. The efficiency test is made with a simple channel flow model. Severalapplication examples are analyzed to demonstrate ability of this method.초록
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