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The contact mechanics model of Persson is applied to layered materials. We calculate the M function, which relates the surface stress to the surface displacement, for a layered material, where the top layer (thickness d) has different elastic properties than the semi-infinite solid below. Numerical results for the contact area as a function of the magnification are presented for several cases. As an application, we calculate the fluid leak rate for laminated rubber seals.


B N J Persson. Contact mechanics for layered materials with randomly rough surfaces. Journal of physics. Condensed matter : an Institute of Physics journal. 2012 Mar 7;24(9):095008

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PMID: 22301779

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