Cylindrical roller bearings are inevitably impacted by external moments or mounting error, which leads to uneven load distribution on the rollers and triggers deformation. Current methods are insufficient to simulate the deformation while ensuring solution accuracy. To address this, a new slicing approach is innovatively proposed in the paper, where springs are added between the neighboring slices to simulate the elastic deformation of the roller under external loads. Compared with the existing methods, the method presented in this paper has the best agreement with the finite element model. On this basis, a dynamic model for cylindrical roller bearing with roller deformation is further developed and verified experimentally. Finally, the sliding behavior inside the bearing under three typical conditions is investigated. A rich spectrum of frequencies emerges in the bearing contact load between the roller and raceway because of the roller deformation. These are all integer multiples of the roller passage frequency. An interesting phenomenon is observed that the sliding velocity is strongly influenced by the orbital speed of the roller compared to its rotational speed. The modeling and analysis in this paper provide new directions to the future work.

中文翻译：

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具有柔性滚子的圆柱滚子轴承的新动力学模型和轴承滑动研究


圆柱滚子轴承不可避免地受到外部力矩或安装误差的影响，从而导致滚子上的载荷分布不均匀并触发变形。目前的方法不足以在保证求解精度的同时模拟变形。为了解决这个问题，该文创新性地提出了一种新的切片方法，在相邻切片之间添加弹簧，以模拟滚子在外部载荷下的弹性变形。与现有方法相比，本文提出的方法与有限元模型具有最佳一致性。在此基础上，进一步开发了一个带滚子变形的圆柱滚子轴承动力学模型，并进行了实验验证。最后，研究了三种典型条件下轴承内部的滑动行为。由于滚子变形，滚子和滚道之间的轴承接触载荷会出现丰富的频率谱。这些都是滚子通过频率的整数倍。观察到一个有趣的现象，与转速相比，滚子的轨道速度对滑动速度有很大影响。本文的建模和分析为未来的工作提供了新的方向。