The axle-box bearings are widely used in railway vehicles, which are of great importance for the running safety of trains. The service condition of railway vehicles has a significant influence on the reliability of axle-box bearings. The difference of the wear rate between the left and right wheels of a wheelset results in the wheel diameter difference (WDD). A freight wagon model considering the axle-box bearings is established and the effect of the WDD on the dynamic performance of the axle-box bearings is analyzed. The results show that the axle-box bearing on the side of the wheel with a larger radius has a larger contact force of roller-raceway. There is a phase difference between the load regions of the right and left axle-box bearings of a wheelset when the WDD exists. The differences of contact force and phase between the right and left bearings enlarge with the increase of WDD. The contact force is highly affected by the equivalent WDD of front and rear wheelsets in anti-phase and the WDD of the front wheelset. The number of rollers carrying the load is unchanged regardless of the WDD condition.


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    Title :

    Effect of Wheel Diameter Difference on Dynamic Performance of Axle-Box Bearing of Freight Wagons


    Contributors:
    Sui, Shunqi (author) / Wang, Kaiyun (author) / Ling, Liang (author) / Zhai, Wanming (author)

    Conference:

    Second International Conference on Rail Transportation ; 2021 ; Chengdu, Sichuan Province, China


    Published in:

    ICRT 2021 ; 194-201


    Publication date :

    2022-02-08




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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