Energy absorption performance of hexagonal multi-cell tube with hierarchy under axial loading

Self-similar structures with hierarchy become novel configuration by presenting higher energy absorption efficiency and better crashworthiness performance, however, its performance is hard to increase continually via expanding hierarchy. In this work, a novel multi-cell hierarchical hexagon honeycomb structure (HHHS) was obtained by changing the topological connection, of which structure is ruled by a length coefficient defined as the ratio of...