天然皮革を対象とする繊維配向の分散を考慮した異方性超弾性モデルに関する研究

抄録

In this paper, an anisotropic hyperelastic model for fiber-reinforced materials considering fiber dispersion was investigated. Fiber-reinforced materials such as skin, leather and muscles, show non-linear elastic characteristics, and they depend on the tensile direction and dispersion of the reinforcing fibers. In this research, the fiber-reinforced structural model introduced by Holzapfel & Gasser (2005) (1) was applied to numerical modelling. Fiber-reinforced elastomers are thought to have two families of reinforcing fibers in the body. In particular, the proposed anisotropic hyperelastic model was developed to apply to the anisotropic stress-strain relationships in the small-strain region. To investigate non-linear elastic characteristics and anisotropic mechanical responses of the proposed model, numerical analyses were conducted. From the results of numerical analyses, non-linear and anisotropic mechanical properties were shown.