研究了非线性转子系统碰摩故障的分叉与混沌行为 ,应用中心流形定理和n维Hopf分叉定理分析了转子系统特征值出现双零实部的情形 ,讨论了非孤立奇点对转子系统分叉特性的影响 ,得到了相应的稳定条件 ,并进行了计算机仿真数值模拟·分析表明 ,非线性转子系统发生碰摩时 ,呈现多种形式的周期与概周期运动 ,以及多种分叉与混沌行为· The bifurcation and chaos behaviors of the nonlinear rotor system with rub-impact fault are studied. The case of double zero real part of the eigenvalues ​​of the rotor system is analyzed by using the central manifold theorem and n-dimensional Hopf bifurcation theorem. The influence of non-isolated singularities on the rotor System bifurcation characteristics, the corresponding stability conditions are obtained, and the numerical simulation of computer simulation shows that the non-linear rotor system has various forms of periodic and almost periodic motions when it encounters rubs, and various bifurcations With chaotic behavior