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The Society of Information Storage Systems (정보저장시스템학회)
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Variation of the dynamic coefficients of the plain journal bearing considering vapor pressure

증기압을 고려한 플레인 저널 베어링의 동특성 변화

  • Received : 2012.03.19
  • Accepted : 2012.03.23
  • Published : 2012.03.25
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Abstract

Fluid dynamic bearings have several advantages that low noise, high rotational stability and low friction. So, early 2000s, the HDD spindle motors have been replaced ball bearings to fluid dynamic bearing. Most of studies apply inner boundary condition that is inside of bearing pressure larger than atmosphere pressure. Therefore, they used Half-Sommerfeld or Reynolds Boundary condition. This paper investigates the dynamic coefficients of the plain journal considered vapor pressure. As a result, it shows that the vapor pressure effect cannot ignore.

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References

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