Phys. Rev. Lett. 87, 116101 (2001) [4 pages]Elastoplastic Contact between Randomly Rough SurfacesReceived 29 January 2001; published 27 August 2001 I have developed a theory of contact mechanics between randomly rough surfaces. The solids are assumed to deform elastically when the stress σ is below the yield stress σY, and plastically when σ reaches σY. I study the dependence of the (apparent) area of contact on the magnification. I show that in most cases the area of real contact A is proportional to the load. If the rough surface is self-affine fractal (Hurst exponent H) the whole way up to the lateral size L of the nominal contact area, then (assuming no plastic deformation) A∼LH. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.116101
DOI:
10.1103/PhysRevLett.87.116101
PACS:
81.40.Pq, 62.20.-x
See AlsoComment: F. M. Borodich, Comment on “Elastoplastic Contact between Randomly Rough Surfaces”, Phys. Rev. Lett. 88, 069601 (2002). Reply: B. N. Persson, Persson Replies:, Phys. Rev. Lett. 88, 069602 (2002). |
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