31S スノーボードの弾性パラメータの同定

Abstract

The elastic parameters of snowboards are essential for simulation on snowboarding. Generally, the elastic parameters of snowboards have not been reported. Also, the elastic parameters of snowboards are difficult to determine by either theoretical and experimental approach. Therefore, an inverse analysis method is applied to identify equivalent elastic parameters of snowboards. In the inverse analysis, mainly, the experimental modal analysis technique and the finite element method are used. First, by applying the experimental modal analysis technique to a test piece (ski, snowboard) with free boundary conditions. natural frequencies and mode shapes are obtained. Secondly, from the obtained natural frequencies and mode shapes, the equivalent elastic parameters of the test piece are identified numerically. To justify the application of this approach, the approach is applied to an aluminum ski for a ski robot. And then, the obtained elastic parameters of the ski are compared with the elastic parameters of the aluminum. Finally, by applying this method to the snowboard, the equivalent elastic parameters of the snowboards are obtained.