Analysis of Dynamic Characteristics of Angle Contact Bearings with Combined Loads

doi:10.3901/JME.2020.17.116

Abstract

Abstract: High speed bearing is a key component of national economy defense industry, according to the nonlinear elastic Hertzian contact theory and Jones Harris model and the original three-degree-freedom dynamic model, a five-degree-freedom dynamic analysis model which take into account the influence of centrifugal force and gyroscopic moment and contact Angle and other factors is proposed. Based on Pythagorean theorem, the geometric equilibrium equations are listed and the forces on the ball and the inner ring of the bearing are analyzed respectively from the internal geometric relations of angular contact ball bearing (ACBB)., the accuracy, stability and generality of the proposed method is verified by comparing the stiffness of bearings under specific working conditions with the results of existing literatures. According to the established model of ACBB, the dynamic characteristics of ACBB are investigated under external loads and speed, respectively. The results are shown as follow, the axial and radial load have great influence on the dynamic parameters and stiffness of ACBB and the influences of axial and load are opposite in some degree。The effects of torques on the dynamic characteristics are very little than the other external loads.

Key words: angular contact ball bearing, bearing stiffness, axial force, ball azimuth, contact angle

CLC Number:

TG156

LI Zhen, GUAN Xianlei, ZHONG Rui, WANG Qingshan. Analysis of Dynamic Characteristics of Angle Contact Bearings with Combined Loads[J]. Journal of Mechanical Engineering, 2020, 56(17): 116-125.

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