| Citation: | CUI Yongcun, WANG Yiming, DENG Sier, et al. Frictional characteristics induced by ring deformation of thin-wall angular contact ball bearing[J]. Journal of Aerospace Power, 2023, 38（4）：964-975 doi: 10.13224/j.cnki.jasp.20210523
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Targeting the unclear mechanism of the frictional torque variation induced by the ring deformation in the process of manufacturing and installation of the thin-wall angular contact ball bearings, based on the dynamic theory of rolling bearing, the dynamic analysis model and friction torque mathematical model of thin-wall angular contact ball bearing were established considering the time-varying representation of the ring deformation, and the effects of the ring groove curvature radius, the deformation phase angle, the half amplitude, and the working conditions on the frictional characteristics were studied. The results indicated that: the influence of the groove radius of curvature coefficient on the frictional torque changed at different speed critical values, which preacted or lagged compared with the ideal ring when considering the ring deformation. Optimal configuration of deformation phase angle of the ring can reduce the effect of the deformation on the frictional torque. The load ratio affected the deformation phase angle of the ring forming the minimum frictional torque, whose effect on the phase angle of two-lobe wave was less than that of three-lobe wave deformation. A reasonable control of half amplitude of ring deformation can reduce the influence of frictional torque fluctuation.
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