Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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A study of the Load Capacity of Air Foil Thrust Bearings

공기 포일 스러스트 베어링의 하중지지능력에 관한 연구

  • Lee, Yong-Bok (EnergyMechanics Center, Korea Institute of Science and Technology) ;
  • Kim, Tae-Young (EnergyMechanics Center, Korea Institute of Science and Technology) ;
  • Park, Dong-Jin (EnergyMechanics Center, Korea Institute of Science and Technology)
  • 이용복 (한국과학기술연구원 에너지메카닉스 연구센터) ;
  • 김태영 (한국과학기술연구원 에너지메카닉스 연구센터) ;
  • 박동진 (한국과학기술연구원 에너지메카닉스 연구센터)
  • Published : 2009.10.31
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Abstract

Air foil thrust bearings are the critical components available on high-efficiency turbomachinery which need an ability to endure the large axial force. Air foil bearings are self-acting hydrodynamic bearings that use ambient air as their lubricant. Since the air is squeezed by the edge of compliance-surface of bearing, hydrodynamic force is generated. In this study, we measured the air film thickness and obtained the minimum film thickness experimentally. To increase the maximum load capacity, compliance of sub-structure was controlled. From numerical analyses, it is seen that, if the air film thickness is distributed more uniformly by variable compliance, the thrust bearings can take more axial load.

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References

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Cited by

  1. 범프 타입 포일 스러스트 베어링의 정하중 구조 강성 및 손실 계수 차이에 관한 실험적 연구 vol.36, pp.6, 2009, https://doi.org/10.9725/kts.2020.36.6.332