Volume 39 Issue 4
Apr.  2024
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LI Zhen, WANG Qingshan, WANG Ruihua, et al. Dynamic characteristics of angular contact ball bearings under different preloading mechanisms and interference amount[J]. Journal of Aerospace Power, 2024, 39(4):20220334 doi: 10.13224/j.cnki.jasp.20220334
Citation: LI Zhen, WANG Qingshan, WANG Ruihua, et al. Dynamic characteristics of angular contact ball bearings under different preloading mechanisms and interference amount[J]. Journal of Aerospace Power, 2024, 39(4):20220334 doi: 10.13224/j.cnki.jasp.20220334

Dynamic characteristics of angular contact ball bearings under different preloading mechanisms and interference amount

doi: 10.13224/j.cnki.jasp.20220334
  • Received Date: 2022-05-13
    Available Online: 2023-07-07
  • Based on Hertz elastic contact theory and raceless control theory, a quasi-static analysis model of angular contact ball bearings with five degrees of freedom under different preloading mechanisms was established. Newton Raphson method was used to numerically solve the established model for exploring the influences of preloading mechanisms and interference amount on the dynamic characteristics of angular contact ball bearings. The effectiveness of the model was verified by comparing the results of contact angle and bearing stiffness of the established model with those of existing literature. The influences of the interference amount on the assembly pressure of the inner and outer rings and the contact deformation of the raceway as well as the influences of the interference amount and the preloading mechanisms on the bearing stiffness were explored. The results showed that with the increase of interference, the assembly pressure of inner and outer rings decreased and the initial contact angle decreased; with the increase of interference, the radial stiffness of the bearing increased, while the axial stiffness and angular stiffness decreased; compared with constant pressure preloading, positioning preloading can improve the bearing stiffness; ghe influence of rotation speed on contact deformation and assembly pressure was investigated, and the release rotation speed was determined to be about 40000 r/min.

     

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