基于甲虫鞘翅的客车八边形仿生多胞薄壁管耐撞性研究  

Crashworthiness of coach’s octagonal bionic multi-cell thin-walled tubes based on beetle elytra

作　　者：白芳华 张林伟[2] 白中浩[2] 覃祯员[1] 张永春[1] 王若璜 胡伟[1] BAI Fanghua;ZHANG Linwei;BAI Zhonghao;QIN Zhenyuan;ZHANG Yongchun;WANG Ruohuang;HU Wei(Chongqing Vehicle Test&Research Institute Co.,Ltd.,National Quality Control&Inspection Center for Coaches,Chongqing 401122,China;State Key Lab of Vehicle Body’s Advanced Design and Manufacture,Hunan University,Changsha 410082,China)

机构地区：[1]重庆车辆检测研究院有限公司国家客车质量监督检验中心,重庆401122 [2]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《振动与冲击》2019年第21期24-30,共7页Journal of Vibration and Shock

基　　金：重庆市质量技术监督局科研计划项目(CQZJKY2017008)

摘　　要：为了提升客车前部吸能结构的耐撞性,通过模拟甲虫鞘翅的微观结构,设计了一系列新型客车八边形仿生多胞薄壁管,并对其在轴向加载下的吸能特性进行了研究。首先,建立了八边形多胞薄壁管的有限元模型,然后,采用简化超折叠单元理论验证了有限元模型的有效性。最后,通过有限元仿真对比研究了八边形仿生多胞薄壁管与传统多胞薄壁管的耐撞性。结果表明,八边形仿生多胞薄壁管具有优异的耐撞性表现。In order to improve the crashworthiness of a coach’s front energy-absorbing structure, a series of coach’s novel octagonal bionic multi-cell thin-walled tubes were designed through imitating microstructure of beetle elytra, and their energy absorption characteristics under axial loading were studied. Firstly, the finite element model for an octagonal multi-cell thin-walled tube was established. Then, the validity of the finite element model was verified using the simplified hyper folding element theory. Finally, the crashworthiness of an octagonal bionic multi-cell thin-walled tube and that of a traditional multi-cell thin-walled one were studied contrastively with finite element simulation. The results showed that an octagonal bionic multi-cell thin-walled tube has an excellent crashworthiness.

关 键 词：八边形仿生多胞管 甲虫鞘翅 理论验证 耐撞性 

分 类 号：U463.8[机械工程—车辆工程]