Abstract
The static characteristics of oil-filled porous journal bearings with nonuniform permeability are theoretically investigated. In this analysis, three types of nonuniform distribution of permeability are analyzed. For the first typed, the permeability varies in a radial direction, i.e., the permeability of the inside part is lower than that of the outside part. For the second type, the permeability varies in a circumferential direction, i.e., the permeability of part of the bearing ends is lower than that of the middle part. The second nonuniform type has a higher load capacity than the other nonuniform types. Also, this type has a lower coefficient of friction and total side leakage flow than the other nonuniform types and a uniform type whose permeability is equal to the lower one of nonuniform types.
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