| Issue |
EPL
Volume 84, Number 4, November 2008
|
|
|---|---|---|
| Article Number | 46004 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/84/46004 | |
| Published online | 21 November 2008 | |
Contact mechanics with adhesion: Interfacial separation and contact area
1
Institut für FestköperForschung, Forschungszentrum Jülich - D-52425 Jülich, Germany, EU
2
Department of Chemical Engineering, University of California - Santa Barbara, CA 93106, USA
Corresponding author: c.yang@fz-juelich.de
Received:
26
August
2008
Accepted:
21
October
2008
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. (J. Phys. Chem. B, 110 (2006) 11884) 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.
PACS: 68.35.Np – Adhesion / 81.40.Pq – Friction, lubrication, and wear / 46.55.+d – Tribology and mechanical contacts
© EPLA, 2008
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