Patent ID: 7894931
Filing Date: 2011-02-22
Classification: B29C

Abstract:
1. A method of predicting an amount of deformation due to shrinkage of a molded article comprising: a processor finding a support point of a bending moment from a distribution of shrinkage rates of a molding material forming the molded article; the processor using said support point to find said bending moment; and the processor using said bending moment to predict said amount of deformation, wherein said molded article has a base on which a rib is provided, and a cross point of an extension direction of virtual extension toward the base side of a region where a distribution of shrinkage rates of the molding material forming the rib becomes discontinuous and a region where a distribution of shrinkage rates of said molding material forming said base becomes discontinuous in a cross-section of said molded article substantially perpendicular to said rib and including said rib is made said support point of said bending moment causing said rib to deform.