Contact mechanics with adhesion: Interfacial separation and contact area

Details Contact mechanics with adhesion: Interfacial separation and contact area Contact mechanics with adhesion: Interfacial separation and contact area

2008-08-26

arxiv.org/abs/0808.3463v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 4 figures

Scientific paper

10.1209/0295-5075/84/46004

We study the adhesive contact between elastic solids with randomly rough, self affine fractal surfaces. We present molecular dynamics (MD) simulation results for the interfacial stress distribution and the wall-wall separation. We compare the MD results for the relative contact area and the average interfacial separation, with the prediction of the contact mechanics theory of Persson. We find good agreement between theory and the simulation results. We apply the theory to the system studied by Benz et al. involving polymer in contact with polymer, but in this case the adhesion gives only a small modification of the interfacial separation as a function of the squeezing pressure.

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