轴电流损伤球轴承的载荷分布和刚度变化分析

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (9) : 68-76.

论文

李小彭，苏晶，徐金池，曲兴超，李柏涛

作者信息 +

Load distribution and stiffness change of ball bearing damaged by shaft current

LI Xiaopeng, SU Jing, XU Jinchi, QU Xingchao, LI Baitao

Author information +

文章历史 +

摘要

基于轴电流损伤凹坑的表面形貌，提出故障表征模型，对损伤后角接触球轴承的载荷分布和刚度变化进行研究。首先，建立了考虑弹性接触和滚动体与滚道间相互作用力的角接触球轴承分析模型，并验证模型的准确性；其次，提出了具有不同长度、宽度、深度的轴电流外滚道损伤凹坑的故障模型及分段函数表达式；最后，利用该故障模型研究了具有不同大小和形状的轴电流损伤凹坑对轴承载荷分布和刚度变化的影响。结果表明:滚动体从滚入到滚出轴电流损伤凹坑过程中，将释放一定量变形，导致损伤区域轴承承载力部分或全部丧失；随着轴电流损伤凹坑变大，轴承刚度变化更大、更迅速。

Abstract

Based on the surface morphology of shaft current damaged pits, a fault characterization model was proposed to study the load distribution and stiffness change of angular contact ball bearings after damage. Firstly, an analysis model of angular contact ball bearing was established considering the elastic contact and the interaction force between rolling body and raceway, and the accuracy of the model was verified. Secondly, the fault model and piecewise function expression of damage pits with different lengths, widths and depths of axial current external raceway are presented. Finally, the influence of shaft current damage pits with different sizes and shapes on load distribution and stiffness of bearings was studied by using the fault model. The results show that a certain amount of deformation will be released during the process of rolling from rolling in to rolling out shaft current damage pit, resulting in partial or complete loss of bearing capacity in the damaged area. As the shaft current damage pit becomes larger, the bearing stiffness changes more rapidly.

导出引用

李小彭，苏晶，徐金池，曲兴超，李柏涛. 轴电流损伤球轴承的载荷分布和刚度变化分析[J]. 振动与冲击, 2023, 42(9): 68-76

LI Xiaopeng, SU Jing, XU Jinchi, QU Xingchao, LI Baitao. Load distribution and stiffness change of ball bearing damaged by shaft current[J]. Journal of Vibration and Shock, 2023, 42(9): 68-76

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