凹截面薄壁管轴向冲击时的变形模式及能量吸收性能研究  

Deformation Modes and Energy Absorption Performances of Concave Profile Tubes Under Axial Crash

作　　者：唐智亮 高永强 许卫锴 TANG Zhiliang;GAO Yongqiang;XU Weikai(School of Intelligent Manufacturing,Wuxi Vocational College of Science and Technology,Wuxi,Jiangsu 214028,P.R.China;School of Civil Engineering and Architecture,Suqian University,Suqian,Jiangsu 223800,P.R.China)

机构地区：[1]无锡科技职业学院智能制造学院,江苏无锡214028 [2]宿迁学院建筑工程学院,江苏宿迁223800

出　　处：《应用数学和力学》2025年第2期165-174,共10页Applied Mathematics and Mechanics

基　　金：辽宁省自然科学基金(2019-ZD-0229);宿迁市自然科学基金(K202124)。

摘　　要：研究了凹截面薄壁管受轴向冲击时的变形模式及能量吸收性能.研究结果展示了凹截面管相比传统凸多边形管在提高能量吸收性能方面的优势.根据数值模拟结果绘制出凹截面薄壁管轴向变形模式分类图,分析了变形模式随截面参数变化的规律.研究了凹截面薄壁管在轴向冲击及倾斜冲击载荷作用下的变形模式及能量吸收性能.研究表明,合理设计的凹截面薄壁管较传统凸正多边形薄壁管的能量吸收性能有显著提高.The deformation modes and energy absorption performances of thin-walled concave profile tubes subjected to axial crash were investigated,and the advantages of concave tubes over conventional convex polygonal tubes in improving energy absorption performances were demonstrated.The classification of axial deformation modes of concave tubes and their variations with cross-section parameters were studied with the finite element method,and the concave tubes under oblique impact loads were also investigated.The concave tubes show dramatic improvements of energy absorption performances over the conventional square tubes.

关 键 词：凹截面 薄壁结构 轴向冲击 变形模式 能量吸收 

分 类 号：O347.3[理学—固体力学]