Abstract: There are two great improvements in the development of injection molding simulation:(1) The surface model based simulation.By using the surface model to replace the conventional mid-plane model, the bottleneck of traditional CAE softwares is broken through;(2) The knowledge-based simulation.By taking full advantages of artificial intelligence and expert system technologies in the CAE system, the initialization, evaluation and optimization of designs can be accomplished with the guidance of CAE.This greatly improves the utility and efficiency of CAE.

Key words: CAE simulation, plastic injection molding, knowledge-based systems