COMPUTATIONAL METHOD OF MATERIAL CONSTANT OF COMPOSITE MATERIAL AND VOLUME FRACTION OF MATERIAL COMPONENT IN COMPOSITE MATERIAL, AND RECORDING MEDIUM

摘要

In computing the overall material constant of a composite material, a virtual composite material is defined as the one that predetermined material components are dispersed in a form of spherical particles in a matrix phase at known volume fractions, and a nonlinear equation having the overall material constant of the virtual composite material as an unknown is prepared. Next, the overall material constant of the composite material is computed by solving the nonlinear equation. The nonlinear equation is a recursive nonlinear equation which is obtained by defining the material constant in the surrounding areas of the spherical particles as the overall material constant of the composite material to be computed. The volume fraction of a material component dispersed in the composite material is computed using the recursive nonlinear equation.