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http://dx.doi.org/10.9797/TSISS.2012.8.1.027

Variation of the dynamic coefficients of the plain journal bearing considering vapor pressure  

Seo, Jun-Ho (연세대학교 기계공학과)
Park, Jae-Hong (연세대학교 기계공학과)
Rhim, Yoon-Chul (연세대학교 기계공학과)
Publication Information
Transactions of the Society of Information Storage Systems / v.8, no.1, 2012 , pp. 27-32 More about this Journal
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.
Keywords
vapor pressure; plain journal bearing; dynamic characteristics;
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  • Reference
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