Energy absorption characteristics of honeycomb materials with negative poisson's ratio

Abstract

Using a combination of finite element numerical simulation and experimental verification, the honeycomb structure with different parameters of negative Poisson's ratio is compressed at a uniform speed. The influence of angle parameter ?, size parameter h and thickness parameter t on Poisson's ratio and energy absorption of the whole structure is studied, and the main factors influencing Poisson's ratio and energy absorption are discussed. The results show that the larger concave angle, the smaller size and the larger thickness of the honeycomb cell, the better energy absorption of the overall structure, and the angle is the parameter that has the greatest influence on the Poisson's ratio and energy absorption. Meanwhile, it is demonstrated that the honeycomb hybrid auxetic material has better energy absorption.