铁道科学与工程学报2016，Vol.13Issue(12)：2327-2334,8.
高速列车前端吸能结构理论预测与数值模拟
Theoretical prediction andnu merical si mu lation of the high-speed train front-end energy-absorbing structure
摘要
Abstract
Based on the Simplified Super Folding Element theory,the cross section of three kinds of high-speed train front-end energy-absorbing structure were divided into the three different basic angle elements which in-clude V,Y-I and Y-II.The theoretical prediction of the mean crushing force were proposed for the multi-cell honeycomb tubes under axial crushing loading.In order to validate the theoretical solutions,the axial crushing simulation of three kinds of high-speed train front-end energy-absorbing structure were implemented by emplo-ying the nonlinear finite element method on the basis of LS-DYNA.Based on the theoretical solutions and the simulation,the influence of the cell-wall length and thickness on crashworthiness was studied,the results show that:The analytical solutions show an excellent agreement with the simulation results.The energy absorption ca-pacity of five-cell combination honeycomb tube is the most excellent among three kinds of energy-absorbing structure.The mean crushing force of multi-cell honeycomb tubes is 1.5 times the power function of thickness and it is 0.5 times the power function of cell-wall length.The increase of the thickness can significantly improve the mean crushing force.The specific energy absorption is 0.5 times the power function of thickness and it is 0.5 times the negative power function of cell-wall length.关键词
高速列车/耐撞性/理论预测/有限元/参数研究Key words
high-speed train/crashworthiness/theoretical prediction/FEM/parameter study分类
交通工程引用本文复制引用
张秧聪,许平,姚曙光,邓雯苑..高速列车前端吸能结构理论预测与数值模拟[J].铁道科学与工程学报,2016,13(12):2327-2334,8.基金项目
国家自然科学基金重点资助项目（U1334208）；教育部重点资助项目（113051A）；国家科技支撑计划项目 （）
