Simulation Analysis of Friction Torque of Angular Contact Ball Bearings under Accelerated Working Conditions
Based on Hertz contact theory and tribological principle,the dynamic model of angular con-tact ball bearing was established by using CMD language in ADAMS system in the form of command flow,and the influence of contact parameters(stiffness coefficient,damping coefficient,friction coefficient)on the friction torque of angular contact ball bearing was analyzed.By comparing with the results of empirical algorithm,the contact parameters of the model were determined,and the effects of acceleration time,axial load and radial load on the friction torque of angular contact ball bearings were studied.The results show that as the stiffness coefficient increases from group K1 to group K3,the bearing friction torque also in-creases;When the damping coefficient increases from 0.3 N·s/mm to 30.0 N·s/mm,the bearing friction torque first decreases and then increases;As the friction coefficient increases,the bearing friction torque al-so increases;At the acceleration stage,the root-mean-square value of the bearing friction moment de-creases with the increase of acceleration time,while the increase of axial and radial loads will lead to an in-crease in the root-mean-square value of the friction moment.Moreover,the effect of acceleration time on the root-mean-square value of the friction moment is relatively small,and the effect of axial load on the root-mean-square value of the friction moment is more significant than that of radial load.
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