Effect of transverse surface roughness on the behaviour of squeeze film in a spherical bearing

Effect of transverse roughness on the behaviour of a hydrodynamic squeeze film between a non-rotating spherical surface and a hemispherical bearing under a steady load is discussed. It is assumed that the bearing surface as well as the surface of the approaching sphere have random roughness which is distributed throughout the surfaces. The stochastic film thickness characterizing the roughness is assumed to be symmetric with non-zero mean (a) and variance (s2). The modified Reynolds equation is solved and then the expressions for pressure, load carrying capacity and the response time are obtained and numerically computed. The results are presented both in graphical as well as tabular form. It is observed that the composite roughness of the surfaces affects the performance of the bearing adversely.