关键词: 盘式摩擦副, 稳定性, Stribeck摩擦模型, 动力学方程

Abstract: In order to obtain system stability of friction pairs under sliding and analyze instability of the system, a multiple-degree-of-freedom and velocity-related sliding stability analysis model was established based on Stribeck friction model herein. The dynamics differential equations were established for the disc-friction pairs and the Coulomb friction formula was expanded with Taylor method. Then the system stability and the effects of key parameters on the system characteristics were analyzed depending on Liapunov's stability criterion. The results show that the system stability may be intensified by decreasing Stribeck coefficient, ratio of static friction and sliding friction and load, or increasing the system damping etc.

Key words: disc friction pair, stability, Stribeck friction model, dynamics equation