On and off dynamics of a creeping frictional system

We report on the dynamics of a model frictional system submitted to minute external perturbations. The system consists of a chain of sliders connected through elastic springs that rest on an incline. By introducing cyclic expansions and contractions of the rest length of the springs, we induce the r...

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Autores principales: Blanc, Baptiste, Geminard, Jean Christophe, Pugnaloni, Luis
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Springer 2017
Materias:
tribology and mechanical contacts; thermal expansion; thermomechanical effects; Hg Creep
Acceso en línea:http://hdl.handle.net/20.500.12272/2634
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2634
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic tribology and mechanical contacts; thermal expansion; thermomechanical effects; Hg Creep
spellingShingle tribology and mechanical contacts; thermal expansion; thermomechanical effects; Hg Creep
Blanc, Baptiste
Geminard, Jean Christophe
Pugnaloni, Luis
On and off dynamics of a creeping frictional system
topic_facet tribology and mechanical contacts; thermal expansion; thermomechanical effects; Hg Creep
description We report on the dynamics of a model frictional system submitted to minute external perturbations. The system consists of a chain of sliders connected through elastic springs that rest on an incline. By introducing cyclic expansions and contractions of the rest length of the springs, we induce the reptation of the chain. Decreasing the amplitude of the perturbation below a critical value, we observe an intermittent creep regime characterized by alternated periods of reptation (owing state) and rest (quiescent state). A further decrease of the perturbation leads to the disappearance of the reptation. The width of the transition region between the continuous creep and the full stop (i.e., the range of excitation amplitudes where the intermittent creep is observed) is shown to depend on the di_erence between the static (µs) and the dynamic (µd) friction coefficients. For µs = µd the intermittent creep is not observed. Studying the statistical features of the intermittent creep regime for any given perturbation amplitude, we find that the time the system resides in each state (owing or quiescent) suggests that: (i) reptation events are uncorrelated, and (ii) rest events are history dependent. We show that this latter history dependency is consistent with the aging of the stress state inside the chain of sliders during the quiescent periods.
format Artículo
publishedVersion
Artículo
author Blanc, Baptiste
Geminard, Jean Christophe
Pugnaloni, Luis
author_facet Blanc, Baptiste
Geminard, Jean Christophe
Pugnaloni, Luis
author_sort Blanc, Baptiste
title On and off dynamics of a creeping frictional system
title_short On and off dynamics of a creeping frictional system
title_full On and off dynamics of a creeping frictional system
title_fullStr On and off dynamics of a creeping frictional system
title_full_unstemmed On and off dynamics of a creeping frictional system
title_sort on and off dynamics of a creeping frictional system
publisher Springer
publishDate 2017
url http://hdl.handle.net/20.500.12272/2634
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AT geminardjeanchristophe onandoffdynamicsofacreepingfrictionalsystem
AT pugnaloniluis onandoffdynamicsofacreepingfrictionalsystem
bdutipo_str Repositorios
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