Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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The Limiting Load Capacity of Air Foil Thrust Bearings

공기 포일 스러스트 베어링의 한계 지지하중 해석

  • Jung, Si-Young (Dept. of Aircraft & Mechanical Engineering, Inha Technical College)
  • 정시영 (인하공업전문대학 항공기계과)
  • Published : 2009.10.31
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Abstract

The limiting load capacity of air foil thrust bearings at extremely high operating speeds is theoretically investigated. The limiting load capacity of a sector is shown to increase as the angular extent ${\beta}$ and the inlet film thickness $h_1$ of the bearing increase, while it decreases with an increase in the ramp ratio b and the compliance ${\alpha}$ of the bearing. But it is found that the angular extent of the bearing is not related to the total limiting load capacity of the $360^{\circ}$ thrust bearing.

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References

  1. Agrawal, G. L., 'Foil Air/Gas Bearing Technology - An Overview', ASME 97-GT-347, Intemational Gas Turbine & Aeroengine Congress & Exhibition, Orlando, Florida, 1997
  2. Walton, J. F. and Heshmat, H., 'Application of Foil Bearings to Turbomachinery Inc\uding Vertical Operation', J. of Engineering for Gas Turbines and Power, Vol. 124, pp. 1032- 1041 , 2002 https://doi.org/10.1115/1.1392986
  3. Heshmat, H., Walowit, J. A. and Pinkus, O., 'Analysis of Gas Lubricated Compliant Thrust Bearing', J. of Lubrication Technology, Vol. 105, No. 105, pp. 638-646, 1983 https://doi.org/10.1115/1.3254696
  4. Heshmat, H. and Shapiro, w., 'Advanced Development of Air Lubricated Foi\ Thrust Bearings', J. of the American Society of Lubrication Engineers, Vol. 40, No. 1, pp. 21-26, 1984
  5. Heshmat, C. A., Xu, D. S. and Heshmat, H., 'Analysis of Gas Lubricated Foil Thrust Bearings Using Coupled Finite Element and Finite Difference Methods', J. of Tribology Vol. 122, pp. 199-204, 2000 https://doi.org/10.1115/1.555343
  6. Park, D. J., Kim C. H., Jang, G. H. and Lee, Y. B., 'Theoretical Considerations of Static and Dynamic Characteristics of Air Foil Thrust Bearing with Tilt and Slip Flow', Tribology International, Vol. 41, lssue 4, pp. 282-295, 2008 https://doi.org/10.1016/j.triboint.2007.08.001
  7. Iordanoff, I. 'Maximum Load Capacity Profiles for Gas Thrust Bearings Working Under High Compressibility Number Conditions', J. of Tribology Vol. 120, pp. 571-576, 1998 https://doi.org/10.1115/1.2834589
  8. Idordanoff, I. 'Analysis of an Aerodynamic Compliant Foil Thrust Bearing: Method for a Rapid Design', J. of Tribology, Vol. 121, pp. 816-822, 1999 https://doi.org/10.1115/1.2834140
  9. Peng, Z. C. and Khonasari, M. M., 'On the Limiting Load-Carrying Capacity of Foil Bearings', J. of Tribology, Vol. 126, pp. 817-818, 2004 https://doi.org/10.1115/1.1792697
  10. Kim, T. H. and San Andres, L., 'Limits for HighSpeed Operation of Gas Foil Bearings', J. of Tribology, Vol. 128, pp. 670-673, 2006 https://doi.org/10.1115/1.2197851