Abstract
Combined effects of convective fluid inertial forces and non-Newtonian couple stresses on the of a characteristics squeeze film for a long partial journal bearing are presented. Using Stokes’ microcontinuum theory and the averaged momentum integral principle, a lubrication equation has been derived to investigate the behaviour of the squeeze film between a convex and a concave surface. A closed-form solution for the behaviour of the squeeze film has been derived for long partial journal-bearing system. According to the results, the combined effects of convective inertial forces and non-Newtonian couple stresses provide an increase in the load-carrying capacity and the approaching time, compared with the non-inertial Newtonian-lubricant case. On the whole, the quantitative effects of convective inertial forces and non-Newtonian couple stresses on the improved characteristics are further emphasized for higher squeeze-film Reynolds numbers, non-Newtonian couple-stress parameters, and eccentricity ratios.
Published Version
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