Vibration and Lubrication Characteristics of Railway Vehicle Axle Box Bearings under Wheel-rail Excitation

被引:0
|
作者
Ma Q. [1 ,2 ]
Yang S. [2 ]
Liu Y. [2 ,3 ]
机构
[1] School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang
[2] State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang
[3] School of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang
关键词
axle box bearing; elastohydrodynamic lubrication; modeling; vibration characteristics; wheel-rail excitation;
D O I
10.3969/j.issn.1004-132X.2024.04.002
中图分类号
学科分类号
摘要
An axle box bearings coupled with a railway vehicle model was developed based on Hertz contact and elastohydrodynamic lubrication theory. The effects of wheel-rail excitations on the vibration and oil film stiffness characteristics of axle box bearings were investigated. MATLAB/Simulink and UM were used to establish the bearing dynamic model and the railway vehicle model, respectively. The coupling relationship between the two was realized through the interaction force. The typical fault forms of bearings and wheelsets were simulated, and the impacts of these faults on bearing vibration and lubrication characteristics were analyzed in detail. The results show that lubrication may effectively reduce bearing vibrations. The partial bearing faults may increase the oil film stiffness, and bearing faults and wheel flats have a significant impact on lubrication. In addition, wheel-rail excitations reduce the vibration ratio of the bearing outer ring while increasing the vibration of other vehicle components and little effects on the vibrations of the car body. © 2024 Chinese Mechanical Engineering Society. All rights reserved.
引用
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页码:580 / 590
页数:10
相关论文
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