Mechanical properties of a novel, lightweight structure inspired by beetle's elytra  

作　　者：Ce Guo Dong Li Zhenyu Lu Chunsheng Zhu Zhendong Da 

机构地区：[1]Institute of Bio-inspired Structure and Surface Engineering,Nanjing University of Aeronautics and Astronautics

出　　处：《Chinese Science Bulletin》2014年第26期3341-3347,共7页

基　　金：supported by the National Basic Research Program of China (2011CB302106);the National Natural Science Foundation of China (51175249, 51105201);the Aero-Science Foundation of China (2013ZF52072);the Specialized Research Fund for the Doctoral Program of Higher Education (20123218110010)

摘　　要：A new kind of bio-inspired, lightweight structure was designed and built from carbon fibre prepreg based on the cross-sectional microstructure of a beetle's elytra. The compression strength and failure process of the resulting structure was analysed using the finite element method; while at the same time, a quasi-static compression experiment was performed using an electronic universal testing machine to verify the effectiveness and accuracy of this finite element method. This bio-inspired structure was compared against a conventional honeycomb structure using FEM, revealing that for a given porosity and load parallel to the axis of the core tubes the respective compressive and specific compressive strengths of the bioinspired structure are much higher at 84.3 MPa and194.7 MPa/(g cm-3); thus demonstrating that this bioinspired structure has superior compressive capability.A new kind of bio-inspired, lightweight struc- ture was designed and built from carbon fibre prepreg based on the cross-sectional microstructure of a beetle＇s elytra. The compression strength and failure process of the resulting structure was analysed using the finite element method; while at the same time, a quasi-static compression experiment was performed using an electronic universal testing machine to verify the effectiveness and accuracy of this finite element method. This bioinspired structure was compared against a conventional honeycomb structure using FEM, revealing that for a given porosity and load parallel to the axis of the core tubes the respective compressive and specific compressive strengths of the bio- inspired structure are much higher at 84.3 MPa and 194.7 MPa/（g cm^-3）; thus demonstrating that this bioinspired structure has superior compressive capability.

关 键 词：结构体 机械性能 鞘翅 甲虫 电子万能试验机 灵感 静态压缩试验 压缩强度 

分 类 号：Q811.2[生物学—生物工程]