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Evaluation of various fluid-film models for use in the analysis of squeeze film dampers with a central groove

By C.C. Siew, M. Hill and R. Holmes


Experimental vibration responses of squeeze film dampers (SFDs) are obtained with four different central groove depths, two types of lubricant and various unbalance levels. Highly non-linear fluid stiffness and damping are observed, the damping being sensitively related to oil viscosity and unbalance. Existing oil film models are applied to predict the SFD behaviour. A special groove-two land model is able to predict the vibration behaviour of a very shallow grooved SFD and the conventional two-land theory is applicable to a SFD with a very deep groove. These observations provide useful guidelines for designing a shallow or deep grooved SFD-rotor assembly

Topics: TA
Year: 2002
OAI identifier: oai:eprints.soton.ac.uk:22084
Provided by: e-Prints Soton

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