针对仅考虑质量偏心的Jeffcott转子碰摩的动力学方程 ,进行了转子 -机匣系统碰摩的灵敏度研究 ,分析了转轴刚度和阻尼、定子刚度和阻尼、偏心距和定子径向刚度对灵敏度的影响 ,并给出了数值分析解 ;讨论了参数的变化对碰摩的产生和影响 ,避免了设计旋转机械的盲目性 In this paper, the sensitivity of the rotor-receiver system to rub-impact is studied for the kinematic equations of the rub-impact of the Jeffcott rotor considering only the mass eccentricity. The influences of the stiffness and damping of the rotor shaft, the stiffness and damping of the stator, the eccentricity and the radial stiffness of the stator on the sensitivity Influence and gives the numerical analysis solution; discusses the parameters of the impact of changes on the rub and avoid the blindness of the design of rotating machinery