Analysis of Dynamic Characteristics and Skidding State of Angular Contact Bearing by Thermo-hydro-elasto-dynamic Coupling Model

doi:10.3901/JME.2022.09.087

Abstract

Abstract: The ball-raceway skidding of the angular contact ball bearing are prone to scratch the rolling element and raceway, leading to a significant temperature rise. To discuss the skidding behavior, a thermo-hydro-dynamic coupling dynamics model is proposed in this article. Thermal deformation and temperature rise model, lubricant mixing model, hydro-dynamic pressure model for describing the interaction of cage and guide ring, and ball-cage interactions are introduced to the model. The dynamic and static characteristics such as the degree of skidding, the temperature distribution, and the thermoelastic deformation are discussed here. The skidding test of 7307AC bearing under different operating conditions is referred to validate the proposed model. The results show that the degree of skidding increases significantly as the speed increases; the maximum temperature and thermal deformation increase correspondingly. The skidding degree under starvation lubrication (0.4 L/min) is lower than full flood lubrication (1.2 L/min). The maximum thermal deformation on the bearing raceway reaches 4 times of the ball-raceway radial clearance. It is found that the oil spray nozzles arranged horizontally and symmetrically have a better cooling effect than those arranged vertically.

Key words: thermo-hydro-elasto-dynamic model, angular contact ball bearing, temperature rise, thermal deformation, skidding degree

CLC Number:

TG156

GAO Shuai, HAN Qinkai, CHU Fulei. Analysis of Dynamic Characteristics and Skidding State of Angular Contact Bearing by Thermo-hydro-elasto-dynamic Coupling Model[J]. Journal of Mechanical Engineering, 2022, 58(9): 87-97.

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