Modeling and dynamic characteristic analysis of high speed angular contact ball bearing with variable clearance

In this paper, an analytical calculation model based on Jones raceway control hypothesis model was proposed for high-speed ball bearing, clearance, centrifugal displacement and thermal deformation are considered. The validity of the proposed model was verified by comparing with the Jones model, and the fatigue life model of bearing was established. The bearing dynamic characteristics under axial load and combined load are analyzed, and the change rule of each parameter is revealed. In addition, the influence of different clearances on high-speed bearing is studied, and the dynamic characteristics of bearing are further analyzed. The research show that the proposed model can break the limitation of Jones raceway control hypothesis model, and the bearing ball-raceway contact state and fatigue life are greatly affected by the change of working clearance. Therefore, the analytical calculation model in this paper not only meets the dynamic characteristics analysis of ball bearing under different operation conditions, but also has great significance for the design and use of bearing.