Thermal Features of Compliant Foil Bearings—Theory and Experiments

[+] Author and Article Information
Mohsen Salehi, Erik Swanson, Hooshang Heshmat

Mohawk Innovative Technology, Inc. Albany, NY 12201

J. Tribol 123(3), 566-571 (Jul 06, 2000) (6 pages) doi:10.1115/1.1308038 History: Received February 14, 2000; Revised July 06, 2000
Copyright © 2001 by ASME
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Heshmat,  H., Walowit,  J., and Pinkus,  O., 1983, “Analysis of Gas-Lubricated Compliant Thrust Bearings,” J. Lubr. Tech. Trans. ASME, 105, No. 4, pp. 638–646.
Heshmat,  H., Walowit,  J., and Pinkus,  O., 1983, “Analysis of Gas-Lubricated Compliant Journal Bearings,” J. Lubr. Tech. Trans. ASME, 105, No. 4, pp. 647–655.
Pinkus, O. and Bupara, S. S., 1979, “Adiabatic Solution for Finite Journal Bearings,” ASME J. Lubr. Technol., pp. 578–587.
Pinkus, O., 1990, Thermal Aspects of Fluid Film Tribology, ASME Press, pp. 37–47.
Salehi,  M. and Heshmat,  H., 2000, “On the flow and thermal analysis of the compliant gas foil seal and foil bearing,” STLE Tribol. Trans., 43, No. 2, pp. 318–324.
Salehi, M., Heshmat, H., Walton, J. F., and Cruzen, S., 1999, “The Application of Foil Seals to a Gas Turbine Engine,” 35th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Paper 99–2821.
Swanson, E. E., Walton, J. F., Heshmat, H., 1999, “A 35,000 RPM Test Rig for Magnetic, Hybrid, and Back-Up Bearings,” ASME Paper No. 99-GT-180.
Heshmat, H., 1991, “Analysis of Compliant Foil Bearings with Spatially Variable Stiffness.” AIAA Paper No. AIAA-91-2103.
Heshmat, H., 1999, U.S. Patent 5,902,049.


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A compliant surface foil bearing (CSFB)
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Variation of air viscosity with temperature
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A model of fluid flow distribution in a CSFB
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Partial foil bearing and control volume for the energy equation
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Journal sleeve installed deformation
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Cooling flow path and position of thermocouples
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Thermal behavior of the foil bearing up to 25,000 rpm under shaft load (B1 bearing)
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CSFB temperature rise under 1334 N (300 lbf) load (B2 bearing)
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Temperature versus load and speed
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Side leakage flow in foil bearing vs eccentricity



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