Title: Effect of sinusoidal roughened surfaces on pressure in lubricating film

Authors: Leonid Burstein

Addresses: Quality Assurance and Reliability, Technion, Israel Institute of Technology, Haifa 32000, Israel

Abstract: The paper deals with theoretical solution and further calculation of hydrodynamic pressures in a thin lubrication film that divides two roughened opposite surfaces. A spatial two-dimensional transient lubrication model of such sliding surfaces with a sinusoidal profile was developed and applied in this context. Each of the surfaces was described by sinusoids, which may have different wavelengths in the x- and y-directions, but they have the same wavelength characteristics in identical directions. The travelling wave solution was used. Parametric calculations show a significant positive effect of roughness with a small number of peak-hollow waves, the effect vanishes when the wave number exceeds 450.

Keywords: roughened surfaces; lubricating film; pressure distribution; hydrodynamic pressures; thin films; transient lubrication models; sliding surfaces; sinusoidal profile; surface roughness.

DOI: 10.1504/IJSURFSE.2008.018968

International Journal of Surface Science and Engineering, 2008 Vol.2 No.1/2, pp.52 - 70

Published online: 26 Jun 2008 *

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