Publications in Scientific Journals:
S. Eder, G. Feldbauer, D. Bianchi, U. Cihak-Bayr, G. Betz, A. Vernes:
"Applicability of Macroscopic Wear and Friction Laws on the Atomic Length Scale";
Physical Review Letters,
Using molecular dynamics, we simulate the abrasion process of an
atomically rough Fe surface with multiple hard abrasive particles. By
quantifying the nanoscopic wear depth in a time-resolved fashion, we show
that Barwell´s macroscopic wear law can be applied at the atomic scale. We
find that in this multiasperity contact system, the Bowden-Tabor term,
which describes the friction force as a function of the real nanoscopic
contact area, can predict the kinetic friction even when wear is involved.
From this the Derjaguin-Amontons-Coulomb friction law can be recovered,
since we observe a linear dependence of the contact area on the applied
load in accordance with Greenwood-Williamson contact mechanics.
Created from the Publication Database of the Vienna University of Technology.