CRACKS PREDICTION OF THIN-WALL INJECTION MOLDED PART BY CAE SIMULATION

摘要

Cracking in the injection-molded part is one of the problems which tooling engineer and/or design engineer often encounter in the molding process. This phenomenon originates from several factors. Among them are highspeed injection, high/long packing pressure/time, etc. In reality, the cracking may be recognized after long time, i.e. days or weeks after part production. In this study, CAE simulation helped to predict the potential cracking area in the plastics part and possible solution(s) to reduce or eliminate cracking by either redesign the part or changing plastics material or processing conditions through simulations. The part used in this study is from the thin-wall injection molded speaker grille product. In the analysis, mis speaker grille would be 3-layer solid that is considered real 3D solid model.