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When the oil supply is not adequate to maintain the ideal lubrication, angular contact ball bearing will enter into the starved lubrication regime resulting in the potential performance degradation and consequently the severe failures. To study the effects of starved lubrication on the performance of angular contact ball bearing, this paper first proposes a multi-degree-of-freedom (DOF) tribo-dynamic model by introducing five-DOF inner ring, six-DOF balls, and six-DOF cage. The model considers the starved lubrication in the ball-raceway contact and the full multi-body interactions between the bearing components. With different ball-raceway starvation degrees being analyzed, the effects of starved lubrication on the bearing tribo-dynamic performance are first revealed. By comparison, it is found that the oil film thickness, the skidding performance, and the traction forces in the ball-raceway contact are significantly influenced by the starvation degrees. It is also found that the starvation-induced change of the ball-pocket contact force is dramatical under combined loads, and the maximum contact force under this load condition increases with the increasing starvation degrees.


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Starved lubrication analysis of angular contact ball bearing based on a multi-degree-of-freedom tribo-dynamic model

Show Author's information Chengwei WEN1,2Xianghui MENG1,2( )Jiaming GU3,4Lin XIAO3,4Shuang JIANG4Hanbing BI4
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China
School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
Bearing Technical Center, Shanghai Prime Machinery Co., Ltd., Shanghai 201108, China
Shanghai Tian An Bearing Co., Ltd., Shanghai 201108, China

Abstract

When the oil supply is not adequate to maintain the ideal lubrication, angular contact ball bearing will enter into the starved lubrication regime resulting in the potential performance degradation and consequently the severe failures. To study the effects of starved lubrication on the performance of angular contact ball bearing, this paper first proposes a multi-degree-of-freedom (DOF) tribo-dynamic model by introducing five-DOF inner ring, six-DOF balls, and six-DOF cage. The model considers the starved lubrication in the ball-raceway contact and the full multi-body interactions between the bearing components. With different ball-raceway starvation degrees being analyzed, the effects of starved lubrication on the bearing tribo-dynamic performance are first revealed. By comparison, it is found that the oil film thickness, the skidding performance, and the traction forces in the ball-raceway contact are significantly influenced by the starvation degrees. It is also found that the starvation-induced change of the ball-pocket contact force is dramatical under combined loads, and the maximum contact force under this load condition increases with the increasing starvation degrees.

Keywords: starved lubrication, angular contact ball bearing, tribo-dynamic performance, multi-body interactions

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Publication history

Received: 27 August 2021
Revised: 12 February 2022
Accepted: 06 June 2022
Published: 11 February 2023
Issue date: August 2023

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© The author(s) 2022.

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 52130502 and 51875344) and the Research Project of State Key Laboratory of Mechanical System and Vibration (Grant No. MSVZD202107).

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