西南交通大学学报2026，Vol.61Issue(1)：243-252,10.DOI:10.3969/j.issn.0258-2724.20240084
考虑车端接触与车钩失稳的高速列车三维碰撞动力学模型
Three-Dimensional Collision Dynamics Model of High-Speed Train Considering Vehicle-End Contact and Coupler Instability
摘要
Abstract
In order to effectively characterize the mechanical response of vehicle-end contact and coupler instability during high-speed train collisions,a contact force calculation method for the longitudinal impact of a thin-walled structure was established,which considered the impact of vehicle misalignment on contact force and contact moment.Characterization methods for the load characteristics of different coupler-buffer devices after the crushing stroke were then established.Finally,based on these two methods,a three-dimensional(3d)train collision dynamics model was constructed considering the vehicle-end contact and coupler instability.The dynamics model results were compared with those from the finite element model(FEM)under two working conditions.The results show that the proposed method can better reflect the contact force responses of different thin-wall structures at different impact speeds,with a maximum relative error of 9.83%compared to the finite element results.The characterization method can effectively distinguish the post-crushing load characteristics of different types of coupler-buffer devices.The developed 3D collision dynamics model is in good agreement with the finite element calculation results in key indicators such as vehicle speed responses,collision interface force responses,and vertical responses of the carbody.关键词
高速碰撞/车端接触力/车钩失稳/碰撞动力学Key words
high-speed collision/vehicle-end contact force/coupler instability/collision dynamics分类
交通工程引用本文复制引用
丁浩谞,郭力荣,李宗治,朱涛,王彬霖,杨冰,肖守讷..考虑车端接触与车钩失稳的高速列车三维碰撞动力学模型[J].西南交通大学学报,2026,61(1):243-252,10.基金项目
国家自然科学基金项目(52172409) （52172409）
四川省杰出青年基金项目(2022JDJQ0025) 中央高校基本科研业务费专项(2682024GF023). （2022JDJQ0025）
