Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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A Study on the Lift-off Characteristics of an Air-lubricated Multi-leaf Foil Journal Bearing

공기윤활 다엽포일 저널 베어링의 회전축 부상 특성에 관한 연구

  • 이용복 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 김태호 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 김창호 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 이남수 (한양대학교 대학원 기계설계학과) ;
  • 장건희 (한양대학교 공과대학 정밀기계공학과)
  • Published : 2001.08.01
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Abstract

Lift-off means that the rotating journal surface separates from the leaf surface in an air-lubricated multi-leaf foil journal bearing. Lift-off builds up minimum film thickness which will provide load capacity between leaves and journal. In this paper an analysis of air-lubricated multi-leaf foil journal bearing was performed with effects of multi-leaf foil deflection and compressible lubrication equation simultaneously. Minimum film thickness built up versus journal speed predicts the lift off characteristics and these results will be useful in designing and selecting the proper speed of the air-lubricated multi-leaf foil journal bearing.

Keywords

References

  1. AiAA-91-2108 Liquid Hydrogen Turbopump Foil Bearing Savile, M.;Gu, A.;Capaldia R.
  2. 한국소음진동공학회학술대회논문집 포일베어링을 사용한 고속원심압축기의 동특성 권계시;지유철;이상욱;최문창
  3. Technical Representative AFAPL-TR-73-92, Air Force Aero Propulsion Laboratory, Air Force System Command Wright-patterson Air Force Base Gas-Lubricated Foil Bearing Technology Development for Propulsion and Power Systems Walowit, S. (et al.)
  4. ASME, J. of Applied Mechanics A Theoretical Investi-gation of the Multileaf Journal Bearing Oh, K. P.;Rohde, S. M.
  5. STLE v.35 An Analysis of Gas-Lubricated Foil-Journal Bearings Arakere, N. K.;Nelson, H. D.
  6. ASME, J. of Lubrication v.105 Analysis of Gas Lubricated Compliant Thrust Bearings Heshmat, H.;Walowit, J. A.;Pinkus, O.
  7. ASME, J. of Tribology v.117 An Analysis of Gas-Lubricated, Multileaf Foil Journal Bearings with Backing Springs Heshmat, C. A.;Heshmat, H.
  8. second edition An Introduction to the Mechanics of Solids Crandall, S. H.;Dahl, N. C.;Lardner, T. J.

Cited by

  1. 고속 전동기용 무급유 포일 저널 베어링 구조체의 하중지지 및 진동 특성 규명 vol.37, pp.6, 2001, https://doi.org/10.9725/kts.2021.37.6.261