Abstract：
:The complexity of the frictional dynamics at the microscopic scale makes difficult to identify all of its controlling parameters. Indeed, experiments on sheared elastic bodies have shown that the static friction coefficient depends on loading conditions, the real area of contact along the interfaces and the confining pressure. Here we show, by means of numerical simulations of a 2D Burridge-Knopoff model with a simple local friction law, that the macroscopic friction coefficient depends non-monotonically on the bulk elasticity of the system. This occurs because elastic constants control the geometrical features of the rupture fronts during the stick-slip dynamics, leading to four different ordering regimes characterized by different orientations of the rupture fronts with respect to the external shear direction. We rationalize these results by means of an energetic balance argument.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Giacco F,Ciamarra MP,Saggese L,de Arcangelis L,Lippiello Edoi
10.1038/srep06772subject
Has Abstractpub_date
2014-10-27 00:00:00pages
6772issn
2045-2322pii
srep06772journal_volume
4pub_type
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更新日期：2017-07-05 00:00:00
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journal_title：Scientific reports
pub_type： 杂志文章
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pub_type： 临床试验,杂志文章
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journal_title：Scientific reports
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更新日期：2017-03-07 00:00:00
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journal_title：Scientific reports
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