通过对单盘转子系统碰摩运动规律的理论分析和计算仿真,得出了转子初次碰摩转速的解析表达式;并对阻尼、偏心距和间隙对转子碰摩转速的影响进行了讨论分析。当转子的偏心距与间隙的比值大于1时,碰摩转速随偏心距的增大或间隙的减小而降低;随阻尼的增大而提高。当转子的偏心距与间隙的比值小于1时,碰摩转速随其比值变化规律是先增大,当达到最大值后又减小,且随阻尼的增大而减小。 Through the theoretical analysis and calculation simulation of the rubbing motion of a single disc rotor system, the analytic expression of rotor initial rub speed is obtained. The influences of damping, eccentricity and clearance on the rub speed of the rotor are discussed. When the ratio of rotor eccentricity to clearance is larger than 1, the rub speed decreases with the increase of eccentricity or the decrease of clearance, and increases with the increase of damping. When the ratio of the rotor eccentricity to the clearance is less than 1, the variation law of the rub speed with the ratio first increases, then decreases when it reaches the maximum value and decreases with the increase of the damping.