Variable Poisson’s ratio materials for globally stable static and dynamic compression resistance

A novel porous mechanical metamaterial with variable Poisson’s ratio (VPR) is proposed for compression and impact applications. Constructed by stacking layers of varying void aspect ratio, VPR structures combine the collapsing penetration resistance of auxetic materials with the lateral expansion of positive Poisson’s ratio (PPR) materials. The concept is analyzed via numerical simulation of both compression and impact loading of VPR structures...