Mechanical Engineering Faculty Research
Title
The Roles of Statics and Dynamics in Determining Transitions Between Atomic Friction Regimes
Document Type
Article
Publication Date
Spring 4-2011
Abstract
We introduce a model AFM tip/substrate system that includes full atomistic detail as well as system compliance to study the transitions between three regimes of atomic friction: smooth sliding, stick-single slip, and stick-multiple slip. We characterize these atomic friction regimes in terms of static and dynamic effects, and investigate how the slip modes affect the mean friction. Molecular statics calculations show that reduced-order model predictions of possible transitions between slip regimes are generally adequate for a fully atomistic system, even for complex reaction coordinates. However, molecular dynamics simulations demonstrate that, while static features of the system govern possible slip regimes, dynamic effects ultimately determine actual transitions between slip regimes.
Publication Title
Tribology Letters
Volume
42
Issue
1
First Page
99
Last Page
107
Recommended Citation
Dong, Yalin; Perez, Danny; Voter, Arthur F.; and Martini, Ashlie, "The Roles of Statics and Dynamics in Determining Transitions Between Atomic Friction Regimes" (2011). Mechanical Engineering Faculty Research. 281.
https://ideaexchange.uakron.edu/mechanical_ideas/281