A model is developed to predict the hydrodynamic performance of a foil journal bearing. The model accounts for both the compressibility of air and the compliance of the bearing surface. A series of predictions of the load-carrying capacity based on the numerical solution for pressure is presented that cover a wide range of operating speeds. The results show good agreement with existing experimental data.
Issue Section:
Technical Papers
1.
Heshmat
, H.
, Shapiro
, W.
, and Gray
, S.
, 1982
, “Development of Foil Journal Bearings for High Load Capacity and High-Speed Whirl Stability
,” ASME J. Lubr. Technol.
, 104
(2
), pp. 149
–156
.2.
Heshmat
, H.
, 1994
, “Advancements in the Performance of Aerodynamic Foil Journal Bearings: High Speed and Load Capacity
,” ASME J. Tribol.
, 116
, pp. 287
–295
.3.
Heshmat
, H.
, Walowit
, J. A.
, and Pinkus
, O.
, 1983
, “Analysis of Gas-Lubricated Foil Journal Bearings
,” ASME J. Lubr. Technol.
, 105
, pp. 647
–655
.4.
DellaCorte
, C.
, and Valco
, M. J.
, 2000
, “Load Capacity Estimation of Foil Air Journal Bearings for Oil-Free Turbo-Machinery Applications
,” Tribol. Trans.
, 43
(4
), pp. 795
–801
.5.
Radil
, K.
, Howard
, S.
, and Dykas
, B.
, 2002
, “The Role of Radial Clearance on the Performance of Foil Air Bearings
,” Tribol. Trans.
, 45
(4
), pp. 485
–490
.6.
Faria
, M. T.
, and San Andres
, L.
, 2000
, “On the Numerical Modeling of High-Speed Hydrodynamic Gas Bearing
,” Transactions of the ASME
, 122
, pp. 124
–130
.7.
Ku
, C.-P. R.
, and Heshmat
, H.
, 1992
, “Compliant Foil Bearing Structural Stiffness Analysis: Part I—Theoretical Modal Including Strip and Variable Bump Foil Geometry
,” ASME J. Tribol.
, 114
, pp. 394
–400
.8.
Heshmat
, H.
, and Ku
, C.-P. R.
, 1994
, “Structural Damping of Self-Acting Compliant Foil Journal Bearings
,” ASME J. Tribol.
, 116
, pp. 76
–82
.9.
Peng
, J.-P.
, and Carpino
, M.
, 1993
, “Calculation of Stiffness and Damping Coefficients for Elastically Supported Gas Foil Bearings
,” Transactions of the ASME
, 115
, pp. 20
–27
.10.
Heshmat
, C. A.
et al., 2000
, “Analysis of Gas Lubricated Foil Thrust Bearings Using Coupled Finite Element and Finite Difference Methods
,” ASME J. Tribol.
, 122
, pp. 199
–204
.11.
Heshmat
, H.
, Walowit
, J. A.
, and Pinkus
, O.
, 1983
, “Analysis of Gas-Lubricated Compliant Thrust Bearings
,” ASME J. Lubr. Technol.
, 105
, pp. 638
–646
.12.
Khonsari, M., and Booser, E., 2001, Applied Tribology, John Wiley & Sons, Inc.
13.
Strom, T., 1987, Program Manager, Advanced Gas Turbine (AGT) Technology Development Project-Final Report, NASA CR-180891.
Copyright © 2004
by ASME
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