Abstract Rolling bearings are widely used in rotating machinery and its dynamic performance plays a significant effect on the stability, reliability and even safety of the machine. Presence of the skidding is likely to cause damages to the surfaces of the inner race, the outer race, the rolling elements, and/or the cage. In this paper, a skidding dynamics model of a rolling bearing is established to reveal the skidding characteristics. In the dynamics model, the cage is discretized into several segments having the same number of the rolling elements so as to introduce the flexibility of the cage represented by springs connecting the adjacent segments. And the nonlinear contact forces between the rolling elements and inner\outer races and the cage, the corresponding friction forces, and the gravity and centrifugal forces of the rolling elements are considered comprehensively. The simulation results are compared with the traditional dynamics model with rigid cage. By using the dynamics model, effects of the radial load, the inner ring acceleration, and the connect stiffness between the mass blocks of the cage on the bearing skidding are investigated. The results indicate that the rolling element skidding generally happens at the time instant that the rolling element is entering or leaving the loaded region. The smaller radial load or the higher angular acceleration of inner ring are the primary causes of the bearing skidding. In addition, increasing the connect stiffness could effectively alleviate the skidding phenomenon. Therefore, the proposed bearing dynamics model is proven to be capable of making a reasonable prediction on the bearing skidding with a more realistic flexible cage.

中文翻译：

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带保持架柔性滚动轴承在加速条件下的打滑动态性能

摘要 滚动轴承广泛应用于旋转机械中，其动态性能对机器的稳定性、可靠性甚至安全性起着重要作用。打滑的存在可能会损坏内圈、外圈、滚动体和/或保持架的表面。本文建立了滚动轴承的打滑动力学模型，以揭示滚动轴承的打滑特性。在动力学模型中，保持架被离散成具有相同数量滚动体的若干段，以引入由连接相邻段的弹簧表示的保持架的柔韧性。以及滚动体与内、外圈与保持架之间的非线性接触力，相应的摩擦力，综合考虑滚动体的重力和离心力。仿真结果与具有刚性笼的传统动力学模型进行了比较。利用动力学模型，研究了径向载荷、内圈加速度和保持架质量块之间的连接刚度对轴承打滑的影响。结果表明，滚动体打滑一般发生在滚动体进入或离开加载区的时刻。较小的径向载荷或较高的内圈角加速度是轴承打滑的主要原因。此外，增加连接刚度可以有效缓解打滑现象。所以，