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Nonlinear Dynamics of a Foil Bearing Supported Rotor System: Simulation and AnalysisFoil bearings provide noncontacting rotor support through a number of thin metal strips attached around the circumference of a stator and separated from the rotor by a fluid film. The resulting support stiffness is dominated by the characteristics of the foils and is a nonlinear function of the rotor deflection. The present study is concerned with characterizing this nonlinear effect and investigating its influence on rotordynamical behavior. A finite element model is developed for an existing bearing, the force versus deflection relation characterized, and the dynamics of a sample rotor system are studied. Some conclusions are discussed with regard to appropriate ranges of operation for such a system.
Document ID
19970006774
Document Type
Other
Authors
Li, Feng
(Auburn Univ. AL United States)
Flowers, George T.
(Auburn Univ. AL United States)
Date Acquired
August 17, 2013
Publication Date
October 1, 1996
Publication Information
Publication: Influence of Back-Up Bearings and Support Structure Dynamics on the Behavior of Rotors With Active Supports
Subject Category
Mechanical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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