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논문 기본 정보

저자정보
(한국과학기술원) (한국기계연구원) (한국과학기술원)
저널정보
한국트라이볼로지학회 한국트라이볼로지학회 학술대회 한국윤활학회 2007년도 제45회 추계학술대회 및 자동차트라이볼로지 한.중 심포지엄/정기총회
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    초록·키워드

    Foil bearings comprise a foil structure made of a corrugated bump foil layer covered by a top foil surface. To obtain the foil bearing characteristics, the fluid film pressure needs to be coupled with the elastic deformation of the foil structure. A number of successful analytical models to predict its deformation have been developed by many investigators, and some models show very good agreement with experimental data. However, all the structural models so far treat a bump foil layer as a simple elastic foundation without consideration of its three dimensional shape. In this study, a finite element foil structural model is proposed. In this model, the bending and membrane stiffness effects of the top foil and bump foil are included and the three-dimensional shape of the foil structure is considered. Using developed model, the deflections of inter-connected bumps are compared with those of separated bumps to investigate stiffness effects of segment between bumps. The minimum film thickness determined from the proposed structural models compared to those of previous models. In addition, the effects of top foil and bump foil thickness on the foil bearing static performances are evaluated.

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      UCI(KEPA) : I410-ECN-0101-2010-551-002326477