Innovative Thin-Walled Structure with Transverse Negative Poisson’s Ratio for High-Performance Crashworthiness

作     者：Bin Wang Yongtao Sun Bin Wang;Yongtao Sun

作者机构：Tianjin Key Laboratory of Soft Soils and Engineering EnvironmentTianjin Chengjian UniversityTianjin 300384China Department of Mechanics and Tianjin Key Laboratory of Nonlinear Dynamics and ControlTianjin UniversityTianjin 300350China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2023年第36卷第1期

页      面：34-44页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0837[工学-安全科学与工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12021002,12072222,12132010 and 11991032) the State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures(Grant No.SKLTESKF1901) 

主　　题：Energy absorbers Convex-concave honeycomb columns(CCHC) Transverse negative Poisson’s ratio Axial impact High-performance crashworthiness 

摘      要：In this paper,an innovative type of thin-walled structures,the convex-concave honeycomb columns(CCHCs)with transverse negative Poisson’s ratio(NPR),is proposed for energy absorbers by replacing the cell walls of square honeycomb lattice columns with sine-shaped or zigzag-shaped walls of equal *** simulations show that,under axial impact,contrary to the conventional square honeycomb columns of equal mass,the transverse cross section of NPR CCHC shrinks inward,making the cell walls of CCHC contact and interact sufficiently with each other and thus dissipate the impact energy much more *** suitably adjusting the transverse NPR,the CCHC can have the combined advantages of effective total energy absorption,high specific energy absorption and low maximum peak crushing *** research of this paper provides a new strategy for the design of high-performance energy absorbers widely used in the engineering fields of vehicle engineering,aerospace engineering etc.