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Lubricated sliding dynamics: Flow factors and Stribeck curve

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Abstract

We study the fluid flow at the interface between elastic solids with randomly rough surfaces. We derive (approximate) analytical expressions for the fluid flow factors which enter in the equation describing the fluid flow, and for the frictional shear stress factors which enter in the equation for the frictional shear stress. Numerical results for a rubber cylinder with surface roughness sliding on a flat lubricated substrate, under “low” and “high” pressure conditions, are presented and discussed. Finally we discuss the role of the fluid-induced elastic deformations of the surface roughness profile.

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Authors and Affiliations

  1. IFF, FZ Jülich, D-52425, Jülich, Germany

    B. N. J. Persson

  2. DIMeG-Politecnico di Bari, V. le Japigia 182, 70126, Bari, Italy

    M. Scaraggi

Authors
  1. B. N. J. Persson
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  2. M. Scaraggi
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Correspondence to B. N. J. Persson.

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Persson, B.N.J., Scaraggi, M. Lubricated sliding dynamics: Flow factors and Stribeck curve. Eur. Phys. J. E 34, 113 (2011). https://doi.org/10.1140/epje/i2011-11113-9

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  • DOI: https://doi.org/10.1140/epje/i2011-11113-9

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