섭동법을 이용한 공기윤활 슬라이더 베어링의 동특성 해석

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강태식;최동훈;정태건
Gang, Tae-Sik;Choe, Dong-Hun;Jeong, Tae-Geon

  • 발행 : 2000.06.01

초록

This study presents a method for determining bearing stiffness and damping coefficients of air-lubricated slider bearing, and shows influences of air-bearing surface geometry(recess depth, crown an d pivot location) on flying attitude and dynamic characteristics. To derive the dynamic lubrication equation, the perturbation method is applied to the generalized lubrication equation which based on linearized Boltzmann equation. The generalized lubrication equation and the dynamic lubrication equation are converted to a control volume formulation, and then, the static and dynamic pressure distributions are calculated by finite difference method. The recess depth and crown of the slider show significantly influence on flying attitude and dynamic characteristics comparing with those of pivot location.

키워드

공기윤활 슬라이더 베어링;베어링 감쇠;베어링 강성;제어체적법;유한차분법;섭동법

참고문헌

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