Theoretical Performance of a Hydrostatic Foil Bearing

[+] Author and Article Information
Marc Carpino, Jih-Ping Peng

Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802

J. Tribol 116(1), 83-89 (Jan 01, 1994) (7 pages) doi:10.1115/1.2927051 History: Received February 17, 1993; Revised June 29, 1993; Online June 05, 2008


The performance of a hydrostatic foil journal bearing operating with an incompressible fluid is discussed. In the configuration considered here, pressurized lubricant fluid is supplied through capillaries to recessed pockets on the surface of the journal. The foil is treated as a perfectly flexible, inextensible shell by a three dimensional finite element model. The pressure distribution is predicted by a finite element formulation of the incompressible Reynolds equation. Results are presented which demonstrate that the foil structure enhances load support while increasing lubricant film thickness. In addition, results indicate that membrane effects are essential in the structural model.

Copyright © 1994 by The American Society of Mechanical Engineers
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