Molding simulation method, molding simulation apparatus and molding simulation program and computer-readable recording medium having recorded the molding simulation program

摘要

PROBLEM TO BE SOLVED: To provide a method for simulating a mold which can more accurately presume a shrinkage cavity fault generated at a casting time or the like.;SOLUTION: The method for simulating the mold comprises the steps of: dividing the mold into infinitesimal elements; analyzing the elements, and calculating solid-phase rates of the respective elements. In this method, a solidification shrinkage generated in a closed region made of the elements each having the solid-phase rate of less than 100% is corresponded to the elements having the lowest solid-phase rate in the closed region. That is, since the part having the low solid-phase rate has a high fluidity as compared with the part having a high solid-phase rate, the occurrence of the shrinkage cavity due to the solidifation shrinkage is concentrated. In this case, the part having the low solid-phase rate is analyzed by considering an change with time from when a molten material is filled in the mold until the material is solidified, and is corresponded to the sequentially generating solidification shrinkage. An analyzed result similar to a reality can be obtained by corresponding the volume of the shrinkage cavity generated by the solidification shrinkage at the part having the agingly analyzed low solid-phase rate.;COPYRIGHT: (C)2004,JPO