METHOD FOR PREPARING THREE-DIMENSIONAL FINITE ELEMENT MODEL FOR MICRO STRUCTURE OF COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method for estimating the dispersibility of a 2nd phase material such as fiber or filler in a composite material and easily preparing a three-dimensional finite element model while considering this dispersibility. SOLUTION: The rectangle of micro image inside the observed composite material is divided into n×n pieces of longitudinal and lateral areas ((n) is an integer) and similarly observed in depth direction (n) times and the standard deviation of ratio of the area occupied by a 2nd phase material 2 in the respective divided areas is found. Then, the standard deviation depending on (n) is similarly found by several kinds of integer (n) so that the distributedness of 2nd phase material 2 such as fiber or filler in the material is estimated. Besides, the arrangement of the 2nd phase material 2 in the respective areas is determined from the calculation formula of this standard deviation so that the three- dimensional finite element model in the micro structure of composite material can be prepared while considering the inequal distribution of the 2nd phase material 2.