Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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The Static and Dynamic Performance Analyses of Air Foil Journal Bearing for Various Bump Foil Stiffness

범프포일 강성변화에 대한 포일저널 베어링의 정적, 동적 성능해석

  • 김경웅 (한국과학기술원 기계공학과) ;
  • 이동현 (한국과학기술원 기계공학과) ;
  • 김영철 (한국기계연구원 회전체구룹)
  • Published : 2004.10.01
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Abstract

This paper presents the effects of the bump foil stiffness on the static and dynamic performance of the foil journal bearings. Reynolds equation is used for the static and dynamic performance analyses. To consider the deflection of top foil the top foil is modeled as a elastic beam and the bump foil is modeled as a spring. So in the static performance analysis the load capacity is compared to the various bump foil stiffness and in the dynamic performance analysis the trajectory of journal center is compared to the various bump foil stiffness.

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References

  1. Walowit, J.A. Anno, 'Modern Development of Lubri-cation Mechanics,' Applied Science Publishers, Ltd.,London, 1975
  2. H. Heshmat, J.A. Walowit and O. Pinkus, 'Analysisof Gas Lubircated Foil Journal Bearings,' Trans.ASME, J. Tribology, pp. 647-655, 1983
  3. M. Carpino, L.A. Medvetz and J.P. Peng, 'Effects ofMembrane Stresses in the Prediction of Foil BearingPerformance,' Triblogy Transaction, pp. 43-50, 1994
  4. J.P. Peng and M. Carpino, 'Calculation of Stiffnessand Damping Coefficients for Elastically SupportedGas Foil Bearings,' Trans. ASME J. Tribology, pp.20-27, 1993
  5. M.J. Braun, F.K. Choi, M. Dzodzo and J. Hsu, 'Steady-State and Dynamic Simulation of a Continuous FoilBearing,' Triblogy Transaction, pp. 322-329, 1996

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