A novel cylindrical sandwich plate inspired by beetle elytra and its compressive properties

作     者：SONG YiHeng RUAN SiHan HAO Ning OKABE YoJi 

作者机构：School of EngineeringThe University of TokyoTokyo 113-0033Japan School of Civil EngineeringSoutheast UniversityNanjing 211189China School of EngineeringRMIT UniversityMelbourne 3001Australia Institute of Industrial ScienceThe University of TokyoTokyo 153-8505Japan 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2024年第67卷第11期

页      面：3465-3476页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51875102) 

主　　题：beetle elytron cylindrical beetle elytron plate compression performance failure characteristics enhancement mechanism 

摘      要：The design and experimental analysis of a semi-cylindrical structure known as the cylindrical beetle elytron plate(CBEP)were *** compression tests and finite element simulation were performed on CBEPs under 30°and 45°inclined sliding support constraints,with a comparison made to cylindrical honeycomb plate(CHP).The study aims to investigate the superior compression performance and enhancement mechanisms of *** results demonstrate that CBEPs exhibit a 14%–26%increase in specific load-bearing capacity and a 20%increase in specific energy absorption compared with CHPs with equal core wall ***“Z-shapedtearing failures were observed,with honeycomb plates showing tearing at the center of the honeycomb walls,while beetle elytron plates exhibited tearing along the midline of the *** different stress patterns,including elastic-plastic development stage of arch,plastic hinge node stage,and rigid node stage,were identified and analyzed to explain the mechanical performance improvements and failure *** that structural damage to trabeculae mostly occurs at its junction with the skin,it is recommended to add chamfers to the junctions of ***,this paper lays the groundwork for the engineering application of CBEP.