Effect of Roughness on the Behavior of Squeeze Film in a Spherical Bearing

Abstract The behavior of a hydrodynamic squeeze film between a non-rotating spherical surface and a hemispherical bearing under a steady load is analyzed. It is assumed that the bearing surface as well as the surface of the approaching sphere have a longitudinal random roughness which is distributed throughout the surfaces. The stochastic film thickness characterizing the roughness is assumed to be symmetric and its mean value is equal to zero. The modified Reynolds equation is solved and the expressions for pressure, load-carrying capacity and the response lime are obtained. The results are presented graphically. It is observed that the performance of the bearing is adversely affected by the composite roughness of the surfaces. KEY WORDS: Hydrodynamic Bearings

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