含浮环式挤压油膜阻尼器的转子系统响应分析

Dynamic response analysis of a rotor supported on floating-ring squeeze film dampers

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.

Characteristics were studied for the floating-ring squeeze film damper. The dynamic model of a rotor supported on the dampers was established. The coupling effect be- tween the rotor and two layers film of the damper was considered in the model. Characteris- tics of the rotor system responses and other influence factors were analysed making use of numerical integral method. The results of numerical integral show that the bi-stable charac- teristics of rotor supported on the dampers can be effectively restrained, and the rotor can steadily run if floating-ring mass is appropriate. The results of numerical integral were vali dated with the experiments of the rotor supported on dampers.