Volume 36 Issue 10
Oct.  2021
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Article Navigation >  Journal of Aerospace Power  > 2021  >  36(10): 2126-2138
CHEN Shijin, SHUAI Qiqi, CHEN Xiaoyang, GU Jiaming, LIU Zhaoxia. Influence of rotor unbalance on dynamic coupling characteristics of angular contact ball bearing-rigid rotor system[J]. Journal of Aerospace Power, 2021, 36(10): 2126-2138. doi: 10.13224/j.cnki.jasp.20200484
Citation: CHEN Shijin, SHUAI Qiqi, CHEN Xiaoyang, GU Jiaming, LIU Zhaoxia. Influence of rotor unbalance on dynamic coupling characteristics of angular contact ball bearing-rigid rotor system[J]. Journal of Aerospace Power, 2021, 36(10): 2126-2138. doi: 10.13224/j.cnki.jasp.20200484
shu

Influence of rotor unbalance on dynamic coupling characteristics of angular contact ball bearing-rigid rotor system

doi: 10.13224/j.cnki.jasp.20200484
  • 1.

    School of Mechantronic Electrical Engineering and Automation，Shanghai University，Shanghai 200072，China

  • 2.

    Shanghai Tian'an Bearing Company Limited，Shanghai Prime Machinery Company Limited，Shanghai 201108，China

  • 3.

    Beijing Institute of Aerospace Control Devices，China Academy of Aerospace Electronics Technology，China Aerospace Science and Technology Corporation，Beijing 100039，China

  • Received Date: 2020-11-12
  • Publish Date: 2021-10-28
    Abstract
  • A complete dynamic numerical simulation model of the high-speed angular contact ball bearing-rigid rotor system was established.Taking an instrument bearing-rotor system as an example，the influences of rotor unbalance on the vibration response of the rotor，the load distribution of the bearing，the movement trajectory and frequency domain amplitude change of the cage mass center and its wear were analyzed.The results showed that when there was no rotor unbalance，the shaft vibration only included the cage frequency，and when the rotor was unbalanced，the shaft vibration included the inner ring frequency and its multiples in addition to the cage frequency.As the rotor unbalance increased，the shaft vibration amplitude corresponding to the inner ring frequency gradually increased，while the shaft vibration amplitude corresponding to the cage frequency first decreased and then increased.The fluctuation of the contact load between the ball and rings increased with the rotor unbalance，and the contact load included multiple coupling frequencies of the cage frequency and the inner ring frequency.The greater rotor unbalance indicated the more unstable mass center movement of cage，but the lower cage wear rate.In addition to the cage frequency，the mass center movement of cage also included the coupling frequency of the cage frequency and the inner ring frequency，indicating that the cage movement was affected by the rotor vibration.

     

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