FEM analysis model generation system and program for press molding using woven material or composite material, FEM analysis system and program including the same

摘要

PROBLEM TO BE SOLVED: To predict occurrence of wrinkles with high accuracy in consideration of flexural rigidity while suppressing a calculation cost in a FEM analysis of a press-molding step.SOLUTION: A FEM analysis model generation system includes: a basic model generation unit for generating a basic model in which a blank plate is divided into a plurality of elements by a mesh on the basis of acquired shape data of the blank material; a multilayer model creation unit for creating a multilayer model by setting a membrane element at a thickness center position and setting a shell element which shares its node with the membrane element and which is regarded as being separated toward both sides from the central position by a predetermined distance; and a blank analysis model generation unit for generating the analysis model of the blank material by defining an inplane stress-strain characteristic for the membrane element and defining data used for expressing an out-of-plane flexural rigidity for the shell element, on the basis of material characteristic data.