スポーツ用人工皮革材料の力学特性を対象とした異方性超弾性モデルの開発

抄録

In this paper, an anisotropic hyperelastic modeling for leather materials was conducted. Natural leather is widely used for sports equipment. However, from the performance instability and the ethical point of view, artificial leather and synthetic leather have been expected as the substitutes. They have reinforcing fibers in the body. So, the mechanical properties show non-linear elastic characteristics, and they depend on the deformation directions and the dispersion of fiber orientation angles. A hyperelastic modeling for arterial layers was conducted by Holzapfel & Gasser (1). Holzapfel model was able to reproduce the mechanical characteristics of arterial layers. In this research, an anisotropic hyperelastic model based on the Holzapfel model was proposed. From the analysis results, the proposed model could reproduce anisotropic mechanical behaviors well and take into account of the dispersion of fiber orientation angles.