Interfacial separation between elastic solids with randomly rough surfaces: Comparison between theory and numerical techniques

Almqvist, A.; Campana, C.; Prodanov, N.; Persson, B.N.J.

doi:10.1016/j.jmps.2011.08.004

Journal Article

PreJuSER-19582

Interfacial separation between elastic solids with randomly rough surfaces: Comparison between theory and numerical techniques

Almqvist, A. ; Campana, C. ; Prodanov, N. ; Persson, B. N. J.FZJ*

2011
Elsevier Science Amsterdam [u.a.]

Journal of the mechanics and physics of solids 59, 2355 - 2369 (2011) [10.1016/j.jmps.2011.08.004]

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Please use a persistent id in citations: http://hdl.handle.net/2128/22998 doi:10.1016/j.jmps.2011.08.004

Abstract: We study the distribution of interfacial separations at the contact region between two elastic solids with randomly rough surfaces. An analytical expression is derived for the distribution of interfacial separations using Persson's theory of contact mechanics, and is compared to numerical solutions obtained using (a) a half-space method based on the Boussinesq equation, (b) Green's function molecular dynamics technique and (c) smart-block classical molecular dynamics. Overall, we find good agreement between all the different approaches. (C) 2011 Elsevier Ltd. All rights reserved.

Keyword(s): J ; Contact mechanics (auto) ; Randomly rough surfaces (auto) ; Elastic solids (auto) ; Pressure distribution (auto) ; Interfacial separation (auto)

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Note: This work, as part of the European Science Foundation EUROCORES Program FANAS, was supported from funds by the DFG and the EC Sixth Framework Program, under contract N ERAS-CT-2003-980409. A. Almqvist acknowledges the EC Seventh Framework Program under contract ALM-PERG06-GA-2009-250623 and the Swedish Research Council VR under contract 621-2008-3839 for financial support.

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