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Vibration characteristic analysis of the rotor system of spherical hybrid sliding bearing
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Rui ZHU, Jingfeng SHEN, Mingming LU, Chunxing GU
Journal of Mechanical Strength | 2025, 47(5) : 1 - 11
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Journal of Mechanical Strength | 2025, 47(5): 1-11
• Vibration·Noise·Monitoring·Diagnosis •
Vibration characteristic analysis of the rotor system of spherical hybrid sliding bearing
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Rui ZHU, Jingfeng SHEN, Mingming LU, Chunxing GU
Affiliations
  • School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Published: 2025-05-15 doi: 10.16579/j.issn.1001.9669.2025.05.001
Outline
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Under the medium and high speed of spherical hybrid sliding bearings, the dynamic pressure effect causes the fluid in the wedge space to whirl, and the vibration characteristics of the rotor may be affected by the oil whirl, so the rotation accuracy of the main shaft is reduced. The spherical hybrid sliding bearings with the orifice throttle was divided into cylindrical and conical whirl. The lubrication mathematical model and rotor dynamic model were established and solved simultaneously, the journal center trajectory and vibration amplitude were obtained. The influence of the centroid offset distance and initial deflection angle on the vibration characteristics of the rotor system were studied.The results show that,compared with the pure cylindrical whirl, the stability of the journal center trajectory decreases and the vibration amplitude increases after considering the conical whirl.With the increase of the centroid offset distance, the stability and vibration amplitude of the journal center trajectory decrease greatly.With the increase of the initial deflection angle, the stability and vibration amplitude of the journal center trajectory decrease only slightly.It can be concluded that changing the distance of the centroid offset has more influence on the stability of the journal center trajectory and the vibration characteristics of the rotor system than changing the initial deflection angle.

Spherical hybrid sliding bearing  /  Oil whirl  /  Journal center trajectory  /  Vibration characteristic
Rui ZHU, Jingfeng SHEN, Mingming LU, Chunxing GU. Vibration characteristic analysis of the rotor system of spherical hybrid sliding bearing[J]. Journal of Mechanical Strength, 2025 , 47 (5) : 1 -11 . DOI: 10.16579/j.issn.1001.9669.2025.05.001
Funding
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  • Shanghai Sailing Program(19YF1434500)
  • National Natural Science Foundation of China(52305207)
Appendix
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Year 2025 volume 47 Issue 5
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.05.001
  • Receive Date：2023-09-07
  • Online Date：2026-03-19
  • Published：2025-05-15
Article Data
Affiliations
History
  • Received：2023-09-07
  • Revised：2023-11-22
Funding
Shanghai Sailing Program(19YF1434500)
National Natural Science Foundation of China(52305207)
Affiliations
    School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Corresponding:

SHEN Jingfeng, E-mail：
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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