主催: 一般社団法人 日本機械学会
会議名: M&M2019 材料力学カンファレンス
開催日: 2019/11/02 - 2019/11/04
In this study, the elastic wave propagation characteristics in isogrid structures are investigated by numerical analysis. By applying Bloch’s theorem as the boundary conditions to the unit cell of isogrid structure modeled by the finite element method (FEM), the dispersion surfaces of isogrid stuructures are calculated. As a result, no bandgaps are found in the frequency range of 0 kHz to 8 kHz. It is also found that while the second branch (dominated by in-plane transverse wave) and the third branch (dominated by longitudinal wave) propagate in an isotropic manner, the first branch (dominated by flexural wave) has anisotropic characteristics.
