Overriding Behavior in Train Collisions Based on Moving Vehicle-Track Coupled Model
YANG Chao1, LI Qiang1, WANG Xi1, WANG Mingmeng2
1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
Abstract：In order to reveal how vehicle parameters affect the overriding behavior in train collisions, the vehicle model and the moving track model were developed in view of the basic ideas of vehicle-track interaction. The nonlinear wheel-rail contact model was applied in coupling both models. A nonlinear coupler model was used to connect two adjacent vehicle models. Then the head-on collision of two identical trains was simulated at low speeds. The dynamic responses of vehicles and tracks were obtained with different parameters. Finally, the wheel lift was taken as the vehicle-collision overriding index. The sensitivity and the relative sensitivity were analyzed in terms of wheel lift to impact speed, to height of car body mass center and to vertical stiffness of secondary suspensions. The results indicate that when other conditions remain unchanged, the wheel lift rapidly increases to 36.5 mm if the impact speed increases to 27 km/h. The wheel lift increases by 41% when the height of mass center increases by 20%. However, it decreases by 16.6% if the vertical stiffness of secondary suspension increases by 20%. In other words, the wheel lift increases with the impact speed and height of mass center, and decreases with the vertical stiffness. The sensitivity of wheel lift to impact speed is nonlinear. The relative sensitivities of wheel lift to height of mass center and vertical stiffness are 205% and -83%, respectively.
杨超, 李强, 王曦, 王明猛. 基于车辆-移动轨道耦合模型的列车碰撞爬车行为[J]. 西南交通大学学报, 2019, 54(6): 1298-1304.
YANG Chao, LI Qiang, WANG Xi, WANG Mingmeng. Overriding Behavior in Train Collisions Based on Moving Vehicle-Track Coupled Model. Journal of SouthWest JiaoTong University, 2019, 54(6): 1298-1304.
BAYKASOGLU C, SUNBULOGLU E, BOZDAG S E, et al. Railroad passenger car collision analysis and modifications for improved crashworthiness[J]. International Journal of Crashworthiness, 2011, 16(3):319-329
[2]
WANG W,HECHT M,ZHOU H,et al. A simulation method of crashworthy train set[C]//IEEE International Conference on Computer Science and Automation Engineering. Shanghai:IEEE, 2011:297-301.
[3]
XIE S, ZHOU H. Research on the crashworthy structures of subway vehicles[J]. International Journal of Crashworthiness, 2014, 19(6):555-566
[4]
KIRKPATRICK S W, SCHROEDER M, SIMONS J W. Evaluation of passenger rail vehicle crashworthiness[J]. International Journal of Crashworthiness, 2001, 6(1):95-106
[5]
FANG H, SOLANKI K, HORSTEMEYER M F. Numerical simulations of multiple vehicle crashes and multidisciplinary crashworthiness optimization[J]. International Journal of Crashworthiness, 2005, 10(2):161-171
[6]
LU G. Collision behaviour of crashworthy vehicles in rakes[J]. Proceedings of the Institution of Mechanical Engineers, Part F:Journal of Rail and Rapid Transit, 1999, 213(3):143-160
[7]
LU G. Energy absorption requirement for crashworthy vehicles[J]. Proceedings of the Institution of Mechanical Engineers, Part F:Journal of Rail and Rapid Transit, 2002, 216(1):31-39
[8]
DIAS J P, PEREIRA M S. Analysis and design for train crashworthiness using multibody models[J]. Vehicle System Dynamics, 2004, 40:107-120
[9]
DIAS J P, PEREIRA M S. Optimization methods for crashworthiness design using multibody models[J]. Computers & Structures, 2004, 82(17/18/19):1371-1380
[10]
SUN Y Q, COLE C, DHANASEKAR M, et al. Modelling and analysis of the crush zone of a typical Australian passenger train[J]. Vehicle System Dynamics, 2012, 50(7):1137-1155
[11]
卢毓江,肖守讷,朱涛,等. 列车纵向-垂向碰撞动力学耦合模型建模与研究[J]. 铁道学报,2014,36(12):6-13 LU Yujiang, XIAO Shoune, ZHU Tao, et al. Construction of dynamic coupling model of longitudinal-vertical train crash[J]. Journal of the China Railway Society, 2014, 36(12):6-13
[12]
翟婉明. 车辆-轨道耦合动力学[M]. 4版. 北京:科学出版社, 2015:107-127.
[13]
CHAAR N, BERG M. Simulation of vehicle-track interaction with flexible wheelsets, moving track models and field tests[J]. Vehicle System Dynamics, 2006, 44(S):921-931
[14]
杨超,肖守讷,朱涛. 非线性铁路车辆系统的时间积分算法[J]. 交通运输工程学报,2016,16(1):88-94 YANG Chao, XIAO Shoune, ZHU Tao. Time integration algorithm in nonlinear railway vehicle system[J]. Journal of Traffic and Transportation Engineering, 2016, 16(1):88-94
[15]
吴庆,罗世辉,魏冲锋,等. 货运机车车钩缓冲装置动力学仿真模型[J]. 交通运输工程学报,2012,12(3):37-43 WU Qing, LUO Shihui, WEI Chongfeng, et al. Dynamics simulation models of coupler systems for freight locomotive[J]. Journal of Traffic and Transportation Engineering, 2012, 12(3):37-43
[16]
European Commission. 2010 Railway applications -crashworthiness requirements for railway vehicle bodies:EN 15227:2008+ A1[S]. Brussels:European Committee for Standardization, 2010.
[17]
杨超,肖守讷,阳光武,等. 一类非耗散的显式时间积分方法[J]. 振动工程学报,2015,28(3):441-448 YANG Chao, XIAO Shoune, YANG Guangwu, et al. Non-dissipative explicit time integration methods of the same class[J]. Journal of Vibration Engineering, 2015, 28(3):441-448
