缓冲器阻抗对重载列车纵向动力学性能影响仿真分析  

A Simulation Analysis of the Impact of the Impedance of Draft Gearson Longitudinal Dynamic Performance of Heavy-haul Trains

作　　者：张军[1] 姜姝 ZHANG Jun;JIANG Shu(Dalian Jiaotong University,Dalian 116000,China;Dalian Petrochemical Corporation,Dalian 116000,China)

机构地区：[1]大连交通大学,辽宁大连116000 [2]大连石化公司,辽宁大连116000

出　　处：《高速铁路技术》2024年第4期14-18,共5页High Speed Railway Technology

摘　　要：为提升重载列车运行的安全性,借助数值仿真研究了缓冲器阻抗对重载列车纵向动力学性能的影响,分析了缓冲器阻抗特性,构建了缓冲器数据网格化模型,结合重载列车制动力、牵引力、运行阻力特性等,搭建列车纵向动力学模型进行仿真试验。研究结果表明:(1)当车钩力处于0~3.2 kN区间时可能产生脱钩等风险;车钩力大于6 kN时,能够发挥出缓冲器的最大功效;(2)随着缓冲器阻抗数值的增加,车钩疲劳损伤系数呈先下降、后稳定、再升高的趋势;(3)车钩力只有保持在2~6 kN范围内,才能最大限度降低车钩的疲劳损伤程度,保障重载列车的平稳运行。To enhance the safety of heavy-haul train operations,this study employed numerical simulation to investigate the impact of the impedance of draft gears on the longitudinal dynamic performance of such trains.It examined the impedance features of draft gears,developed a grid-based model for draft gear data,and combined these with braking,traction,and running resistance properties of heavy-haul trains to construct a longitudinal dynamics model for simulation experiments.The findings indicate:(1)Within a coupler force range of 0 to 3.2 kN,risks such as uncoupling may occur;when the coupler force exceeds 6 kN,the draft gears exhibit maximum effectiveness.(2)As the value of the impedance of draft gears increases,the coupler fatigue damage coefficient initially decreases,then stabilizes,before rising again.(3)To minimize the extent of coupler fatigue damage and ensure smooth operation of heavy-haul trains,it is crucial to maintain the coupler force within the range of 2 kN to 6 kN.

关 键 词：缓冲器 重载列车 纵向动力学 性能影响 仿真分析 

分 类 号：U270.34[机械工程—车辆工程]