Patent ID: 6136235
Filing Date: 2000-10-24
Classification: B29C

Abstract:
In a simulation system which predicts a behavior of a molten resin in a mold in filling, packing, and cooling processes by using a fundamental equation formulated by the finite element method, and shrinkage factors in a direction of thickness and planar directions based on anisotropy of a volume shrinkage factor obtained during prediction of the filling, packing, and cooling processes, a method of predicting a deformation amount in an injection-molded article, wherein a warp deformation is predicted by calculating the shrinkage factors in accordance with:.sub..epsilon. Z=A+B.multidot.eV [(1)].sub..epsilon. P=(eV-.sub..epsilon. Z)/2 [(2)]wherein .sub..epsilon. Z is a shrinkage factor in the direction of thickness, .sub..epsilon. P is a shrinkage factor in the planar directions, eV is a volume shrinkage factor and A and B are shrinkage coefficients.