异材异厚帽型梁结构轴向压溃理论研究  

Research on Axial Crushing Theory of Hat-Section Beam with Different Materials and Thickness

作　　者：顾纪超[1] 樊涛[1] 段利斌[1] 李奇奇[1] 许东阳[1] 

机构地区：[1]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：《汽车工程学报》2016年第4期252-259,共8页Chinese Journal of Automotive Engineering

基　　金：国家国际科技合作计划(2014DFG71590);湖南省自然科学基金(14JJ3055);中国博士后科学基金(2014M552132)

摘　　要：在车身耐撞性设计中,前纵梁等吸能部件广泛采用异材、异厚的帽型梁结构,而传统理论方法很难对其轴向压溃力进行准确预测。针对传统方法存在的不足,以超折叠单元(Superfolding Element,SE)理论为基础,提出通用帽型梁结构轴向压溃理论,可准确预测异材、异厚单帽及双帽薄壁梁结构的平均压溃力,并通过试验及仿真手段验证了该理论的准确性。In the crashworthiness design of car body, the hat-section beam with different materials and thickness has been widely used in energy absorption components such as a front side member. By using the traditional theory, its mean crushing force is hard to predict. Based on the superfolding element（SE）, the general axial crushing theory for hat-section beam has been put forward to accurately predict the mean crushing force of the hat-section thin-walled beam with different materials and thickness. And the proposed theory has been verified by experiments and simulation.

关 键 词：帽型薄壁梁 超折叠单元 轴向压溃 理论预测 

分 类 号：U463.83[机械工程—车辆工程]