MOLECULAR DYNAMICS SIMULATIONS OF VISCOSITY IN CONFINED LUBRICANT FILM

C Pirghte and AC Pirghie, JOURNAL OF THE BALKAN TRIBOLOGICAL ASSOCIATION, 22, 2008-2020 (2016).

Molecular dynamics simulations were used in order to investigate the changes in confined lubricant properties that occur during the nano- elastohidrodynamic lubrication. In our simulations we consider the effects of loading pressure and sliding velocity of the upper wall. The phenomena as layered structure of the lubricant film and slip and stick at the walls are confirmed. A special attention is given to the viscosity dependence on shear rate and loading pressure. The obtained dependence is supported by a good correlation between MD data and the fitting curves, being verified for all investigated thicknesses lubricant film, all sliding velocities and all loading pressures.

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