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http://dx.doi.org/10.5293/KFMA.2003.6.2.007

A Study on the Reliability of an Air Foil Journal Bearing for High Speed Turbomachinery  

Kim, Tae-Ho (한국과학기술연구원 트라이볼로지 연구센터)
Lee, Yong-Bok (한국과학기술연구원 트라이볼로지 연구센터)
Kim, Chang-Ho (한국과학기술연구원 트라이볼로지 연구센터)
Lee, Nam-Soo (한양대학교 기계설계공학과)
Publication Information
The KSFM Journal of Fluid Machinery / v.6, no.2, 2003 , pp. 7-14 More about this Journal
Abstract
This paper describes reliability characteristics of an air foil journal bearing for high-speed turbomachinery at a room temperature. To verify the reliability of air foil journal bearing, lift-off characteristics, load carrying capacity, and 10,000 cycle start-stop test were performed with a motor-driven test rig. A lift-off test shows the relationship between the rotating speed of the shaft and the frictional torque with bearing surface. About a load-carrying capacity, the tested air foil journal bearing produced a load capacity of 500N at an operating speed of 15,000rpm, which is compared with results of numerical analysis and empirical coefficients. Finally, the trends in change of start torque, stop torque, and bearing temperature were shown during a 10,000-cycle start-stop test of an air foil journal bearing. We found that an air foil bearing performs well, as a supported bearing for the high-speed turbocompressor.
Keywords
High Speed Turbomachinery; Air Foil Journal bearing; Reliability; Load carrying capacity; Durability; Start-Stop Torque; Bearing Temperature;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
1 An analysis of Gas-Lubricated, Multileaf Foil Journal Bearings with Backing Springs /
[ Heshmat, C. A.;Heshmat, H. ] / ASME, Journal of Tribology   DOI   ScienceOn
2 Load Capacity Estimation of Foil Air Journal Bearings for Oil-Free Turbomachinery Application /
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3 공기윤활 범프 저어널 베어링의 부상 특성에 관한 연구 /
[ 이용복;이남수;최동훈;김창호 ] / 윤활학회지   과학기술학회마을
4 포일 베어링에 대한 기술 개발 현황 및 응용에 대한 재 조명 /
[ 이용복;김창호 ] / 한국소음진동공학회 소특집   과학기술학회마을
5 공기윤활 다엽포일 저어널 베어링의 회전축 부상 특성에 관한 연구 /
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6 이단 압축기의 동력학적 설계 및 운전 특성에 관한 연구 /
[ 이용복;이남수;김태호;김창호;최동훈 ] / 유체기계저널
7 공기윤활 범프포일 저어널 베어링의 내구성 특성에 관한 연구 /
[ 이용복;김태호;김창호;이남수;장건희 ] / 윤활학회지   과학기술학회마을
8 이단 압축기의 임펠러 및 시스템에 대한 최적 설계 /
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11 범프 포일 베어링들의 동적 계수에 관한 연구 /
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[ Dellacorte C. ] / NASA TM-107405
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