弹性环式挤压油膜阻尼器减振机理研究
STUDY ON VIBRATION DAMPING MECHANISM OF AN ELASTIC RING SQUEEZE FILM DAMPER
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Abstract: The vibration reduction mechanism of the Elastic Ring Squeeze Film Damper (ERSFD) is investigated.Based on the analyses of forces and motions acting on the journal of a rotor-support system with ERSFD and generalized incompressible Reynolds Equation,the model and differential equations of the vibration reduction mechanism of an ERSFD are set up.The features of the vibration reduction for both ERSFD and SFD are considered and compared.It is found out that SFD is only the special example of ERSFD.Theoretical analysis reveals that ERSFD has a very good dynamic characteristics and can be used for both reducing vibration and retuning the frequencies (critical speeds) of the rotor-support system.
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Key words:
- Oil film /
- Damper /
- Elastic support /
- Vibration damping /
- Mechanism
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