Dynamic Crushing Response of Self-Similar Second Order Hierarchical Square Honeycombs

Out-of-plane dynamic crushing response of self-similar second order hierarchical square honeycombs under impact loading was simulated using ABAQUS in the present study to investigate the influence of the aperture size, the yield stress of parent material and the impact velocity on the crushing model and dynamic stress-strain relationship.The results show that the self-similar second order hierarchical square honeycombs with a smaller aperture size are more likely to undergo overall collapse under impact loading.With the increase of the yield strength of the parent material, the plateau stress increases but the length of the plateau stage is hardly changed at all.Besides, both the plateau stress and the plateau stage length at the impact end increase with the increase of the impact velocity.