高速列车轴箱轴承滚动体打滑特性研究
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华东交通大学

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TH133.33

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国家自然科学基金51965018。


Research on the Slippage Characteristics of Rolling Elements of High-Speed Train Axle Box Bearings
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    摘要:

    滚动体打滑会加剧轴承的磨损和振动,对高速列车轴箱轴承的寿命和稳定性造成重要影响。本文以高速列车轴箱双列圆柱滚子轴承为研究对象,考虑兜孔间隙与径向游隙等因素,建立轴承二维有限元模型,利用中心差分法对模型进行显式动力学求解,分析平稳工况、减速工况、和轨道激励工况下滚动体的打滑特性。结果表明:在稳定工况和轨道激励工况时,滚动体与外圈滑移速度RMS值更大;在减速度工况时,滚动体与内圈滑移速度RMS值更大,且随着减速度的增大,增加更明显。

    Abstract:

    Rolling elements slippage will aggravate the wear and bearing vibration, which will have an important impact on the life and stability of high-speed train axle box bearings. This paper, with the double-row cylindrical roller bearing of high-speed train as the object of study, considering the factors such as pocket clearance and radial clearance establish a two-dimensional finite element model of the bearing and by adopting the central difference method to solve the model's explicit dynamics, analyses the slippage characteristics of roller elements under steady conditions, deceleration conditions and track excitation conditions. The results show that: the RMS value of the sliding speed between the rolling elements and the outer ring is lager under stable conditions and track excitation conditions; the RMS value of the sliding speed between the rolling elements and the inner ring is greater under the deceleration conditions, and the increase is more obvious as the deceleration increases

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  • 收稿日期:2020-04-29
  • 最后修改日期:2020-05-14
  • 录用日期:2020-06-03
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