Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 23, Issue 17, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0953-8984/23/17/175004
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Funding
- Austrian COMET-Program
- Excellence Centre of Tribology
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A post-processing method for molecular dynamics (MD) simulations of friction based on the smooth particle approach is proposed, allowing-among other features-the introduction and evaluation of a solid-solid contact area arising due to direct asperity interaction. In order to illustrate the feasibility of this scheme, a large number of MD calculations of lubricated nanotribological systems with various asperity geometries and carefully selected numbers of lubricant molecules were carried out and analysed. In this manner, it is shown that the friction force as a function of load agrees very well with a three-parameter friction law which, in addition to the adhesion-and the load-controlled terms, contains a load-independent offset.
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