Contact between representative rough surfaces

Vladislav Yastrebov 1 Guillaume Anciaux 2 Jean-François Molinari 2
1 MAT - Centre des Matériaux
2 EPFL - Ecole Polytechnique Fédérale de Lausanne
Abstract : A numerical analysis of mechanical frictionless contact between rough self-affine elastic manifolds was carried out. It is shown that the lower cutoff wave number in surface spectra is a key parameter controlling the representativity of the numerical model. Using this notion we demonstrate that for representative surfaces the evolution of the real contact area with load is universal and independent of the Hurst roughness exponent. By introducing a universal law containing three constants, we extend the study of this evolution beyond the limit of infinitesimal area fractions.
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Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2012, 86, 035601, 4 p. <10.1103/PhysRevE.86.035601>
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Vladislav Yastrebov, Guillaume Anciaux, Jean-François Molinari. Contact between representative rough surfaces. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2012, 86, 035601, 4 p. <10.1103/PhysRevE.86.035601>. <hal-00750394>

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