复杂轮轨摩擦条件下驱动方式对地铁轮轨动态相互作用影响研究
Effect of Driven Modes on Metro Wheel/rail Interactions under Complex Wheel/rail Friction Conditions
李牧皛 1刘鹏飞2
作者信息
- 1. 成都飞机工业(集团)有限责任公司 成都 610073
- 2. 石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室 石家庄 050043;河北省交通工程结构力学行为演变与控制重点实验室 石家庄 050043
- 折叠
摘要
旋转电机驱动和直线电机驱动是地铁列车最常采用的两种驱动方式.基于车辆-轨道耦合动力学理论,建立考虑旋转电机和直线电机两种驱动方式的地铁车辆-轨道三维耦合动力学模型;同时为精确反映轮轨系统动力学相互作用,在这两种模型中建立考虑轮轨空间运动的轮轨非赫兹滚动接触模型.利用所建立的动力学数值模型,系统地对比分析牵引工况下复杂轮轨界面摩擦条件对这两种地铁车辆轮轨系统动态相互作用的影响.结果表明:牵引载荷对旋转电机地铁车辆切向相互作用影响显著,但对直线电机地铁车辆切向相互作用影响很小;在低黏着接触条件下,旋转电机地铁车辆防滑控制器会被触发,此时轮轨接触表现为全滑动状态,而直线电机地铁车辆的轮轨接触则表现为局部滑动状态;在复杂轮轨摩擦条件和牵引工况下,旋转电机地铁车轮踏面磨耗量明显高于直线电机地铁的车轮踏面磨耗量.
Abstract
Metro trains are commonly driven by the linear induction motors(LIM)or rotary motors(RM).The LIM and RM metro vehicle-track coupled dynamic models are respectively established,in which the wheel/rail non-Hertzian rolling contact is performed with consideration of spatial vibrations of wheelsets and rails.The wheel/rail frictional contact under changeable friction conditions with respect to the metro vehicles with different driving modes is systematically compared.The numerical investigations suggested that the traction loadings have a significant effect on wheel/rail tangential interactions of the RM vehicle,which however,contribute little to the wheel/rail tangential interactions of the LIM vehicle.The anti-slip controllers of the RM vehicles will be triggered when the powered wheelset enters into the low-adhesion zones,and the wheel/rail contact is full-slip under this case.On the other hand,the wheel/rail contact of the LIM vehicles is prone to be locally slipping with low-friction adhesion conditions.Moreover,the wheel/rail frictional wear of the RM vehicles is clearly higher than that of the LIM vehicles under complex friction conditions due to the lower level of frictional contact.
关键词
地铁车辆/驱动方式/车辆-轨道耦合动力学/复杂轮轨摩擦条件/轮轨非赫兹滚动接触/磨耗Key words
metro/driven modes/vehicle-track coupled dynamics/complex wheel/rail friction conditions/wheel/rail non-Hertzian contact/wear引用本文复制引用
基金项目
国家自然科学基金资助项目(52072249)
出版年
2024
NETL
NSTL
万方数据