针对浮环式挤压油膜阻尼器,研究了阻尼器特性;建立了含浮环式挤压油膜阻尼器转子系统的动力学模型,模型考虑了转子与浮环式挤压油膜阻尼器两层油膜之间的相互耦合作用.利用数值仿真分析了系统的动力特性及其他影响因素,仿真结果表明:浮环式挤压油膜阻尼器能有效抑制系统双稳态响应,选择一个质量适当的浮动环,有利于转子高速运转的稳定.利用含浮环式挤压油膜阻尼器的转子动力学试验台,验证了仿真结果的正确性. For the floating-ring squeeze film damper, the characteristics of the damper were studied. The dynamic model of the rotor system with the floating-ring squeeze film damper was established. The model considered two layers of oil film of the rotor and the floating ring squeeze film damper The simulation results show that the floating-ring squeeze film damper can effectively restrain the bistable response of the system and choose an appropriate quality of the floating ring, Which is conducive to the stability of the rotor at high speed.The rotor dynamics test bench with the floating ring squeeze film damper is used to verify the correctness of the simulation results.