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1 Journal of Theoretical and Applied Mechanics

1 2023

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Research on vibration evolution of a ball bearing without the cage under local variable-diameter raceway damage

Zhou Enwen, Zhao Yanling, Zhang Huanqing

Journal of Theoretical and Applied Mechanics

2023

Vol. 61 nr 1

129--146

This article presents an analysis of vibration evolution of a ball bearing without the cage. A vibration model in which time-varying displacement, time-varying stiffness, contact force and collision force are comprehensively considered, is proposed. On this basis, the law of motion of the bearing is studied. It is shown that a variable-diameter raceway affects the radius of curvature, which effects the dispersion of rolling elements. The damaged variable -diameter raceway leads to discrete failure, contact force and collision force of rolling elements, which are main reasons that cause vibration mutation. The bearing motion changes from quasi-periodic to chaotic motion.