分散した繊維配向を有する圧縮性異方性材料の有限要素解析

抄録

The finite element analysis of artificial leather for sports equipment was performed in this paper. Leather materials contain tightly entangled fibers in the body. The structure of its fiber layer is complex because the fiber orientation is dispersed. Anisotropic mechanical characteristics of leathers are observed due to the effect of the fiber orientation. The mechanical properties of the artificial leather materials were reproduced by compressible anisotropic hyperelastic model considering fiber orientation dispersion. The dependence of the viscous response on fiber orientation and tensile direction of artificial leather was shown by uniaxial tensile tests. The effect of viscosity was applied to compressible anisotropic hyperelastic model to reproduce dynamic mechanical behavior of artificial leather. Including anisotropic component, viscous force was added to elastic potential. Numerical simulations using the finite element method (FEM) were performed. The rate dependence of the mechanical properties of artificial leather was reproduced by the numerical simulation. The applicability of the viscoelastic model to evaluate the mechanical properties of artificial leather for sports equipment was demonstrated from the results of the finite element analysis.