Abstract
In this study, knee joint torque generated by sports spats in running was estimated by numerical simulation. The fabric materials for sports spats show anisotropic stress strain relations and stress softening in mechanical properties. Therefore, an anisotropic hyperelastic model was applied to numerical simulation. Uniaxial monotonic tensile tests and uniaxial cyclic tensile tests were carried out to estimate material parameters of an anisotropic hyperelastic model. Then, we supposed that the strain of sports spats on human body during running was reproduced using 3-dimensional computer graphic model. As a result, stress and strain distribution were calculated, and knee joint torque produced by sports spats during running was calculated. From the numerical result, joint torque caused by sports spats depended on bending angle of knee.
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