Contact mechanics: relation between interfacial separation and load

Details Contact mechanics: relation between interfacial separation and load Contact mechanics: relation between interfacial separation and load

2007-06-19

arxiv.org/abs/0706.2762v1

Phys. Rev. Lett. 99, 125502 (2007)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.99.125502

I study the contact between a rigid solid with a randomly rough surface and an elastic block with a flat surface. I derive a relation between the (average) interfacial separation $u$ and the applied normal squeezing pressure $p$. I show that for non-adhesive inte raction and small applied pressure, p is proportional to exp (-u/u_0), in good agreement with recent experimental observation.

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