http://www.cnr.it/ontology/cnr/individuo/prodotto/ID314114
Optimal Energy Dissipation in Sliding Friction Simulations (Articolo in rivista)
- Type
- Label
- Optimal Energy Dissipation in Sliding Friction Simulations (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s11249-012-9936-5 (literal)
- Alternative label
Benassi, A.; Vanossi, A.; Santoro, G. E.; Tosatti, E. (2012)
Optimal Energy Dissipation in Sliding Friction Simulations
in Tribology letter
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Benassi, A.; Vanossi, A.; Santoro, G. E.; Tosatti, E. (literal)
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- ISI Web of Science (WOS) (literal)
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- CNR Ist Energet & Interfasi CNR IENI; CNR Ist Nanosci; International School for Advanced Studies; CNR IOM Democritos Natl Simulat Ctr; Abdus Salam International Centre for Theoretical Physics (literal)
- Titolo
- Optimal Energy Dissipation in Sliding Friction Simulations (literal)
- Abstract
- Non-equilibrium molecular dynamics simulations, of crucial importance in sliding friction, are hampered by arbitrariness and uncertainties in the removal of the frictionally generated Joule heat. Building upon general pre-existing formulation, we implement a fully microscopic dissipation approach which, based on a parameter-free, non-Markovian, stochastic dynamics, absorbs Joule heat equivalently to a semi-infinite solid, and harmonic substrate. As a test case, we investigate the stick-slip friction of a slider over a two-dimensional Lennard-Jones solid, comparing our virtually exact frictional results with approximate ones from commonly adopted dissipation schemes. Remarkably, the exact results can be closely reproduced by a standard Langevin dissipation scheme, once its parameters are determined according to a general and self-standing variational procedure. (literal)
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