Regensburg 2004 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.47: Poster
Donnerstag, 11. März 2004, 16:00–18:00, Poster D
Solid friction at model metal interfaces studied via NEMD computer simulations — •Igor Stankovic1, Martin Kröger 2, and Siegfried Hess1 — 1Institute of Theoretical Physics, PN 7-1, Technical University of Berlin, Hardenbergstr. 36, D - 10623 Berlin — 2Polymer Physics, ETH Zurich, ML H18, Sonneggstr. 3, CH-8092 Zurich
The embedded atom method is adopted to study structural changes
and mechanical alloying at model metal interfaces during dry
solid friction [1,2,3]. The main constitutive properties of real
metals, i.e., cohesive energy, elastic constants, and heat of
solution, are reproduced by a set of a few basic model
parameters. The model metal is subjected to shear deformation
and strong flow via non-equilibrium molecular dynamics in order
to discuss the origins of some qualitative properties observed
more specific embedded atom potentials. The mechanisms leading
to mechanical alloying at interface are observed and discussed
[3]. Information about crystal structure inside NEMD
configurations is obtained with No-dqcommon neighbor analysisNo-dq,
based on planar graphs [4].
1. M. S. Daw and M. I. Baskes, Phys. Rev. Lett. 50, 1285 (1983).
Phys. Rev. B 29, 6443 (1984).
2. I. Stankovic, M. Kröger, and S. Hess, Phys. Rev. E, accepted 2003.
3. M. Kröger, I. Stankovic, and S. Hess, Multiscale Model. Simul. 1,
25-39 (2003).
4. I. Stankovic, M. Kröger, and S. Hess, Comput. Phys. Commun. 145,
371
(2002).