集中荷重に対するひずみ分散機能を有するメカニカルメタマテリアルの開発

抄録

In order to realize a mechanical metamaterial that disperses strain concentrations caused by compression of a cylinder, two-dimensional finite element analyses were carried out on three models with different structures. All analytical models had small spaces and were designed to exhibit the same deformation stiffness. A model with uniform spaces showed high values of strain energy in the vicinity of the contact area with cylinder. On the other hand, a model consisting of long and short spaces arranged alternately showed lower strain energies in the region near the contact area. Furthermore, a model consisting of asymmetrical arrays of long spaces successfully dispersed the strain energy to the far side.