转子吸振器挤压油膜系统的研究

本文发展了传统的动力吸振器,提出了用于旋转机械减振的转子吸振器。研究了刚性转子、柔性Je-ffcott转子在挤压油膜阻尼器、转子吸振器减振作用下的动力特性,并进行了初步试验研究。研究表明转子吸振器能有效地改善转子系统的动力特性,为旋转机械的减振提供了一种新方法。

STUDY ON ROTOR VIBRATION ABSORBER WITH SQUEEZE FILM DAMPERS

A type of Rotor Vibration Absorber(RVA) used in parallel with Squeeze Film Dampers(SFD)is presented. The RVA is a symmetric ring with an elastic coupling mounted in a certain place of the rotor. One or more RVA may be applied to a rotor. The RVA may be mounted in a suitable place on the rotor to gain desira-bla vibration control and to attenuate the amplitude of the rotor system far away from the supporting position. The amplitude and transmissibility of the rotor can be greatly reduced in the working speed range. The introduction of the RVA to rotor-SFD system will greatly enhance the ability of the system to subject the impact unbalance loading and increase the stability of the rotor system.Both the steady-state and transient responses of the rotor system with the RVA have been analyzed. The primary experiments of the system have also been performed, which verify the effectiveness of the rotor vibration absorber.