3次元均質化FEM解析の発泡ゴムへの適用性に関する研究

抄録

Stress strain relationships of foamed rubber was determined by mechanical characteristics of rubber matrix and microscopic structures. The microstructure consists of air voids, beams and walls. Numerical analysis method like finite element analysis (FEM-analysis) of foamed rubber considering microstructure require large computer resources. In this study, practical analysis method was develop by the three-dimensional finite element analysis using homogenization method. The microstructure of foamed rubber was assumed to have the periodic structure, homogenization theory was applied to FEM analysis of hyperelasticity. Using stress strain relationships of general polyurethane, the influence on mechanical characteristic by the change of the structure was confirmed. Thus, the parameters decided mechanical characteristic of foamed rubber was verified.