中南大学学报（自然科学版）2024，Vol.55Issue(6)：2370-2381,12.DOI:10.11817/j.issn.1672-7207.2024.06.027
不同初始姿态下城际列车车钩碰撞特性及脱轨风险分析
Analysis of coupler collision characteristics and derailment risk of intercity trains with different initial attitudes
摘要
Abstract
The initial attitude deviations of couplers often exist in train collision,which affects the motion attitude of trains and increases the risk of derailment.In this paper,a nonlinear finite element model of a fully automatic coupler of an intercity train was established,which was verified with the impact experiment of trolly.On this basis,a model of intercity train head car collision was established.The collision characteristics of the couplers and its influence on the derailment risk of the vehicle with initial displacement deviations and angle deviations were studied.The results show that the stability values of pitching angle and yawing angle of couplers gradually increase with the increase of the initial deviations,and the influence of initial attitudes on the angle of coupler is different.The pitching angle is more sensitive to vertical and pitching deviations,while the yawing angle is more sensitive to lateral and yawing deviations.Moreover,the initial attitude has an important effect on the wheelset lift of the driving vehicle.When the pitching angle increases significantly with the increase of the deviations,the vertical force on the car body increases,leading to an increase in the wheelset lift of the bogie and resulting in bigger derailment risk of the vehicle.关键词
列车车钩/碰撞特性/脱轨风险Key words
train coupler/collision characteristics/derailment risk分类
交通工程引用本文复制引用
许平,何家兴,邢杰,姚曙光,黄启,舒安麒..不同初始姿态下城际列车车钩碰撞特性及脱轨风险分析[J].中南大学学报（自然科学版）,2024,55(6):2370-2381,12.基金项目
湖南省自然科学基金资助项目(2021JJ30853) （2021JJ30853）
国家重点研发计划项目(2021YFB3703801) （2021YFB3703801）
湖南省科技领军人才项目(2019RS3018)(Project(2021JJ30853)supported by the Natural Science Foundation of Hunan Province （2019RS3018）
Project(2021YFB3703801)supported by the National Key Research and Development Program of China （2021YFB3703801）
Project(2019RS3018)supported by the Leading Talents of Science and Technology of Hunan Province （2019RS3018）
