Optimal Energy Dissipation in Sliding Friction Simulations. Benassi, A., Vanossi, A., Santoro, G. E., & Tosatti, E. Tribology Letters, 48(1):41–49, October, 2012. ![Optimal Energy Dissipation in Sliding Friction Simulations [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex 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.
@article{benassi_optimal_2012,
title = {Optimal {Energy} {Dissipation} in {Sliding} {Friction} {Simulations}},
volume = {48},
issn = {1573-2711},
url = {https://doi.org/10.1007/s11249-012-9936-5},
doi = {10/f37wx3},
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.},
language = {en},
number = {1},
urldate = {2018-09-13},
journal = {Tribology Letters},
author = {Benassi, A. and Vanossi, A. and Santoro, G. E. and Tosatti, E.},
month = oct,
year = {2012},
keywords = {Dynamic modelling, Friction mechanisms, Nanotribology, Stick–slip},
pages = {41--49}
}
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