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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第11卷    第3期    总第59期    2014年6月

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文章编号:1672-7029(2014)03-0060-05
重载货车坡道制动动力学及轮轨磨耗研究
李亨利12,李芾1,付茂海1,王璞2

(1.西南交通大学 机械工程学院,四川 成都 610031;
2.南车眉山车辆有限公司,四川 眉山 10010
)

摘 要: 运用多体动力学方法,建立了包括1辆详细车辆动力学模型, 101辆仅考虑纵向自由度简化车辆模型的大秦重载铁路万t列车模型,模型包含车钩力、缓冲器阻抗特性、制动空气波传递,以及装配侧架交叉支撑转向架和径向转向架等因素。在此基础上,分析列车坡道制动的车辆动力学行为、运行安全性,以及制动力对不同转向架的影响。研究结果表明:制动力和闸瓦力改变了轮轨接触和蠕滑关系,线路坡道越大,轮轨磨耗越剧烈,但径向转向架可提高列车运行安全性,降低轮轨磨耗。

 

关键字: 列车制动;动力学;轮轨;磨耗;径向转向架

Study on the braking dynamics and wheel/rail wear for the heavy haul trucks on ramp lines
LI Hengli1,2, LI Fu1, FU Maohai1, WANG Pu2

1. Department of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China;
2. CSR Meishan Co.,Ltd., Meishan 620032, China

Abstract:Based on the multi-body dynamic method, a 10,000 tons train dynamic model includes one complicated car model with cross-braced bogie or radial bogie, and other 101 simple car models with only the longitudinal DOF (Degree of freedom) on the Da-Qin heavy haul lines were established. The coupler forces, buffer damping and braking air wave characteristics, were take into consideration. The vehicle dynamics, safety and wheel/rail wear of different type bogies were investigated when the train brakes on ramp lines. The results show that since the braking forces and brake shoe forces change wheel-rail relationship and creep, the wheel-rail wear is more severe on ramp lines, while the radial bogie on the whole can improve the running safety and wear.

 

Key words: train braking; dynamics; wheel/rail; wear; radial bogie

ISSN 1672-7029
CN 43-1423/U

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