Journal
TRIBOLOGY INTERNATIONAL
Volume 165, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2021.107292
Keywords
Angular contact ball bearing; Dynamic model; TEHL; Gyroscopic moment
Categories
Funding
- National Key Research and Development Program of China [2018YFB2000202]
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The paper proposed a dynamic model including thermo-elastohydrodynamic lubrication (TEHL) to investigate high-speed angular contact ball bearings. The results showed that the gyroscopic moment of the ball increased with higher load under constant axial load, and that sliding speed and film temperature significantly increased with a sudden decrease in axial load due to friction moment decline.
The transient process can be accurately simulated using a dynamic ball bearing model. This paper proposed a dynamic model including thermo-elastohydrodynamic lubrication (TEHL) to investigate high-speed angular contact ball bearings. In this model, TEHL considering the spinning and the non-Newtonian effect was used to calculate the contact force and the friction force. The results showed that the gyroscopic moment of the ball increased in conjunction with a higher load when the axial load remained constant. Furthermore, the sliding speed and film temperature increased significantly in conjunction with a sudden decrease in the axial load from 800 N to 400 N in 3 ms due to an abrupt decline in the friction moment, while the gyroscopic moment was delayed.
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