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.
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. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(9): 68-76.
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