Article ID Journal Published Year Pages File Type
615329 Tribology International 2011 5 Pages PDF
Abstract

According to the Stokes micro-continuum theory of couple stress fluids together with the consideration of viscosity variation with pressure, the combined effects of piezo-viscous dependency, and non-Newtonian couple stresses in wide parallel rectangular-plate squeeze-film characteristics have been presented. An approximate analytical solution is obtained using a small perturbation method. Comparing with the iso-viscous and Newtonian case, the squeeze film performance is apparently improved. In addition, the improved characteristics are further emphasized for the squeeze film plates operating with a larger viscosity–pressure parameter, a non-Newtonian couple stress parameter and a lower film thickness.

► The effects of piezo-viscous dependency and couple stresses in squeeze films are presented. ► An analytical solution is obtained for rectangular plates by a small perturbation method. ► The squeeze film performance is improved as comparing with the iso-viscous and Newtonian case.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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