Abstract
Couple stresses affect lubrication problems when additives are used or the lubricant contains long-chain molecules. Such couple stresses may have a significant effect on the behaviour of bearings in practice. The effect of couple stresses with and without rotational inertia on mechanical parameters of the curvilinear thrust bearing is considered. As an example we discuss simulation of the squeeze-film behaviour of a human joint modelled as a hemispherical nonspinning bearing. It is shown that the influence of couple stresses on the characteristics of the bearing discussed is significant and not negligible. The effects of couple stresses provide an enhancement in the pressure distribution and of the load-carrying capacity.
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