ANZIAM J.
46 (2004), 143-155
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Effects of velocity-slip and viscosity variation on journal bearings
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R. Raghavendra Rao
Department of Mathematics
S.V. University College of Engineering
Tirupati 517502
India
rrrsvu@sify.com
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K. R. Prasad
Department of Mathematics
S.V. University College of Engineering
Tirupati 517502
India
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Abstract
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A generalised form of the Reynolds equation for
two symmetrical surfaces is derived by
considering slip at the bearing surfaces. This
equation is then used to study the effects of
velocity-slip for the lubrication of journal
bearings using half-Sommerfeld boundary
conditions. Expressions for pressure and load
capacity and the coefficient of friction are
obtained and numerically analysed for various
parameters. It is found that the load capacity
decreases with slip. This is unfavourable for
lubrication. The coefficient of friction
decreases with a high viscous layer and
increases with slip.
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