In-plane crushing behaviors of hexagonal honeycombs with different Poisson's ratio induced by topological diversity

For the topological diversity, in-plane hexagonal honeycombs show some interesting mechanical properties which can be related to Poisson's ratios. This work trying understand how ratios affects crashworthiness of honeycombs. Based on standard beam theory, analytical model that predicting is derived, from crushing strength in terms further proposed by using one-dimensional shock model. Combining and numerical method, critical characteristics as plateau stress, densified strain, Specific Energy Absorption (SEA) has been investigated under speeds range 5 m/s 150 complied with previous study about honeycomb crashworthiness. Through observing wave trapping behavior honeycombs, typical deformation modes have identified a deformation-mode map generated considering ratio.