@article{fdi:010070077,
  title = {{A} micromechanical model of rate and state friction : 1. {S}tatic and dynamic sliding},
  author = {{P}erfettini, {H}ugo and {M}olinari, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{R}ate and state friction has been extensively used to explain many features of the seismic cycle but the scaling of the experimentally derived parameters a, b and d(c) for real faults is problematic. {T}he purpose of this paper is to present a micromechanical model for rate and state friction in which the contact between the two surfaces occur via plastic and elastic contacts. {S}hear deformation is accommodated in the bulk of cylindrical contacts rather than at the surface of the contact, as done classically. {A}ssuming that the viscoplastic response is governed by the {J}(2) plastic flow theory, we retrieve the rate and state framework. {U}nlike previous works, we identify the state variable as representing the changes of plastic contact area. {I}n our model, all macroscopic frictional parameters of the rate and state framework are related to the parameters of the elementary contacts. {W}e provide a derivation of the aging evolution law for the state variable and propose a new evolution law that reconciles the aging, {L}inker-{D}ieterich and {N}agata evolution laws. {W}e discuss the scaling of the frictional parameters for active faults and landslides. {T}he a and b parameters should have comparable value at fault scale since friction is mostly controlled by plastic contacts at large normal stress (typically hundreds of {MP}a). {O}ur model predicts that the critical slip distance d(c) should be scale independent and controlled solely by the plastic contacts. {P}lain {L}anguage {S}ummary {T}he seismic cycle is controlled by the way friction evolves on active faults. {W}e present here a micromechanical model, based on the idea that friction is accomodated by the plastic and elastic contacts on the fault interface. {O}ur model allows the derivation of the rate and state friction laws, which have been widely used to model the seismic cycle. {O}ur approach allows extrapolating laboratory results to the fault scale and suggests that laboratory experiments are suitable to describe fault dynamics. {O}ur model presents an alternative to the reference {B}owden and {T}abor friction model, and allows, for the first time, the extrapolation of the frictional parameters derived in the laboratory to fault scale.},
  keywords = {friction ; rate and state ; plastic and elastic contacts ; micromechanical ; model},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {S}olid {E}arth},
  volume = {122},
  numero = {4},
  pages = {2590--2637},
  ISSN = {2169-9313},
  year = {2017},
  DOI = {10.1002/2016jb013302},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070077},
}