TY - JOUR
T1 - Dynamic response analysis of bearing-rotor system considering cage whirling motion
AU - Hong, Jie
AU - Zhang, Jian
AU - Wang, Yongfeng
AU - Ma, Yanhong
AU - Cheng, Ronghui
N1 - Publisher Copyright:
Copyright © 2022 Jie Hong, et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
PY - 2022/8/1
Y1 - 2022/8/1
N2 - Dynamic model of bearing-rotor system is developed considering the collision effects between the cage and its guiding land. The modal characteristic and vibration response are studied with the fourth-order Runge-Kutta method. It is demonstrated that the cage whirling motion arising as a result of collision with the guiding land would induce abnormal frequency components in the system’s response including the multiple frequency as well as the modulation between the speed frequency and the natural frequency. Additionally, cage whirling motion and rotor vibration become severe when the rotor rotates around its pitching-mode critical speed. It is shown that the amplitudes of abnormal frequencies can be decreased by reducing rotor unbalance in a given range.
AB - Dynamic model of bearing-rotor system is developed considering the collision effects between the cage and its guiding land. The modal characteristic and vibration response are studied with the fourth-order Runge-Kutta method. It is demonstrated that the cage whirling motion arising as a result of collision with the guiding land would induce abnormal frequency components in the system’s response including the multiple frequency as well as the modulation between the speed frequency and the natural frequency. Additionally, cage whirling motion and rotor vibration become severe when the rotor rotates around its pitching-mode critical speed. It is shown that the amplitudes of abnormal frequencies can be decreased by reducing rotor unbalance in a given range.
KW - bearing-rotor system
KW - cage whirling motion
KW - dynamic response
KW - frequency modulation
UR - https://www.scopus.com/pages/publications/85139086060
U2 - 10.21595/vp.2022.22803
DO - 10.21595/vp.2022.22803
M3 - 会议文章
AN - SCOPUS:85139086060
SN - 2345-0533
VL - 44
SP - 21
EP - 27
JO - Vibroengineering Procedia
JF - Vibroengineering Procedia
T2 - 58th International Conference on Vibroengineering
Y2 - 25 August 2022 through 26 August 2022
ER -