Static and dry friction due to multiscale surface roughness
Abstract
It is shown on the basis of scaling arguments that a disordered interface between two elastic solids will quite generally exhibit static and dry friction (i.e., kinetic friction which does not vanish as the sliding velocity approaches zero) because of Tomlinson-model instabilities that occur for small-length-scale asperities. This provides a possible explanation for why static and dry friction are virtually always observed, and superlubricity almost never occurs.
- Publication:
-
Physical Review E
- Pub Date:
- September 2008
- DOI:
- 10.1103/PhysRevE.78.036111
- arXiv:
- arXiv:0805.1915
- Bibcode:
- 2008PhRvE..78c6111S
- Keywords:
-
- 81.40.Pq;
- 68.35.Af;
- 46.55.+d;
- Friction lubrication and wear;
- Atomic scale friction;
- Tribology and mechanical contacts;
- Condensed Matter - Materials Science
- E-Print:
- doi:10.1103/PhysRevE.78.036111