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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part J. Journal of engineering tribology >Impact of journal bending on the failure of axle bearings in railroad passenger cars
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Impact of journal bending on the failure of axle bearings in railroad passenger cars

机译:杂志弯曲对铁路乘用车轴承失效的影响

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摘要

This research presents a systematic methodology to analyze the failure mechanism of cylindrical roller bearings of railroad passenger cars. Initially, a finite element model is developed to calculate the journal bending and internal contact load distribution, considering multi-interfacial contact parameters. Then, non-Hertzian contact theory is applied to prove the rollers' abnormal contact behaviors, including load-distribution and displacement. Subsequently, a grease lubrication model is developed to study bearings lubrication under different operating conditions. Additionally, an exact service life model from ISO standards is used to evaluate the effect of journal bending. Finally, a system failure mechanism can be summarized and validated in the experiments, also helpful for axle box system bearings design and assembly.
机译:本研究提出了一种系统方法,分析了铁路乘用车圆柱滚子轴承的故障机理。 最初,考虑多界面接触参数,开发了有限元模型来计算轴颈弯曲和内部接触载荷分布。 然后,应用非赫兹联系理论以证明滚子的异常接触行为,包括负载分布和位移。 随后,开发出油脂润滑模型以在不同的操作条件下研究轴承润滑。 此外,ISO标准的确切使用寿命模型用于评估杂志弯曲的效果。 最后,在实验中可以概括并验证系统故障机制,也有助于轴箱系统轴承设计和组装。

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