Study on Dynamics Properties of High Speed Ball Bearing Considering Eccentric Load of Shaft

Taking 7309 ball bearing as the research object to study the dynamic characteristics of high speed ball bearing which considering eccentric load of shaft. The finite element model is established by ANSYS/LS-DYNA. The load is applied on the bearing and the dynamics simulation analysis is carried out. Bending moment is used as a variable to analyze displacement, stress, velocity and acceleration of the bearing. Stress distribution and vibration of the bearing with different bending moment are analyzed. Simulation results show that when the eccentric load increases, the maximum stress of each part of the bearing rises, the frequency of the impact stress increases. The analytical method and model in the present paper could aid in the design of ball bearings.