用快速伽辽金方法结合弗洛凯理论和数值积分方法 ,对挤压油膜阻尼器 滑动轴承 刚性Jeffcott转子系统的稳定性和分叉行为进行了研究 .计算结果表明 ,系统能够在一定范围内保持稳定 ,并出现倍周期和霍普夫分叉现象 ,为有效地控制转子的稳定运行状态提供了理论依据 . The stability and bifurcation of the rigid Jeffcott rotor system of a squeeze film damper sliding bearing were studied by using the fast Galerkin method combined with the Floquet theory and the numerical integration method. The calculated results show that the system can maintain within a certain range Stable, and appear double cycle and Hopf bifurcation phenomenon, which provides a theoretical basis for effectively controlling the steady state of the rotor.