Simulation of the load reduction process of high-speed angular contact ball bearing with coupling model of dynamics and thermo-elastohydrodynamic lubrication

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.

Automated summary

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.