A Stochastic Model of Stick-Slip Boundary Friction with Account for the Deformation Effect of the Shear Modulus of the Lubricant
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Date
2010
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Allerton Press, Inc.
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Abstract
The melting of an ultrathin lubricating film during the friction of two solid atomically smooth surfaces is studied within the limits of the Lorentz model that approximates a viscoelastic medium, the deformation effect of the shear modulus being taken into account. It is shown that the action of a random force representing additive non-correlated noise results in the sustained oscillation mode that corresponds to stickslip friction. The numerical modeling of the process yields the ratios between the relaxation times at which the stick-slip mode is characterized by a high amplitude. The amplitude of stick-slip transitions is found to decrease as the shear modulus of the lubricant increases.
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Keywords
lubricant, stick-slip friction, white noise, shear modulus, adiabatic approximation, Lorentz system, oscillations., shear stresses
Citation
A.V. Khomenko, I.A. Lyashenko, A Stochastic Model of Stick-Slip Boundary Friction with Account for the Deformation Effect of the Shear Modulus of the Lubricant // Journal of Friction and Wear. - Vol.31, No. 4. - pp.308-316 (2010).