Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Braun, O. M."'
Publikováno v:
J. Phys.: Condens. Matter 28, 293001 (2016)
The nonlinear dynamics associated with sliding friction forms a broad interdisciplinary research field that involves complex dynamical processes and patterns covering a broad range of time and length scales. Progress in experimental techniques and co
Externí odkaz:
http://arxiv.org/abs/1605.07037
Autor:
Braun, O. M., Tosatti, E.
Publikováno v:
Phys. Rev. E 90, 032403 (2014)
Inspired by spring-block models, we elaborate a "minimal" physical model of earthquakes which reproduces two main empirical seismological laws, the Gutenberg-Richter law and the Omori aftershock law. Our new point is to demonstrate that the simultane
Externí odkaz:
http://arxiv.org/abs/1605.03819
Publikováno v:
Phys. Rev. Lett. 110, 085503 (2013)
Sliding friction across a thin soft lubricant film typically occurs by stick-slip, the lubricant fully solidifying at stick, yielding and flowing at slip. The static friction force per unit area preceding slip is known from molecular dynamics (MD) si
Externí odkaz:
http://arxiv.org/abs/1301.4324
Autor:
Manini, Nicola, Braun, O. M.
Publikováno v:
Phys. Lett. A 375, 2946 (2011)
For the contact of two finite portions of interacting rigid crystalline surfaces, we compute the dependence of the pinning energy barrier on the misfit angle and contact area. The resulting data are used to investigate the distribution of static fric
Externí odkaz:
http://arxiv.org/abs/1101.5508
Autor:
Braun, O. M., Manini, Nicola
Publikováno v:
Phys. Rev. E 83, 021601 (2011)
Using molecular dynamics based on Langevin equations with a coordinate- and velocity-dependent damping coefficient, we study the frictional properties of a thin layer of "soft" lubricant (where the interaction within the lubricant is weaker than the
Externí odkaz:
http://arxiv.org/abs/1012.5922
Autor:
Braun, O. M., Tosatti, Erio
Publikováno v:
J. Phys.: Condens. Matter 20 (2008) 354007
With the help of a two-dimensional model we study rolling lubrication by circular (2D fullerenes) molecules for a wide range of parameters. The conditions under which microscopic rolling friction may be effective are identified and related to the rel
Externí odkaz:
http://arxiv.org/abs/0809.1015
Publikováno v:
Tribol. Int. 41, 920 (2008)
This paper is part of a study of the frictional dynamics of a confined solid lubricant film - modelled as a one-dimensional chain of interacting particles confined between two ideally incommensurate substrates, one of which is driven relative to the
Externí odkaz:
http://arxiv.org/abs/0709.4374
Autor:
Braun, O. M., Peyrard, M.
Molecular dynamics study of a thin (one to five layers) lubricant film between two substrates in moving contact are performed using Langevin equations with an external damping coefficient depending on distance and velocity of atoms relative the subst
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010185
Autor:
Braun, O. M.
The criteria for the existence of supersonic and multiple topological excitations (kinks) in the driven Frenkel-Kontorova model (a chain of atoms placed into an external periodic potential) with anharmonic (exponential) interatomic interactions are s
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010126
Autor:
Braun, O. M.
Diffusion of a particle in the N-dimensional external potential which is periodic in one dimension and unbounded in the other N-1 dimensions is investigated. We find an analytical expression for the overdamped diffusion and study numerically the case
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010125