Thermodynamic aspects of rock friction
Geophysics
2014-11-19 v2
Abstract
Rate- and state-dependent friction law for velocity-step tests is analyzed from a thermodynamic point of view. A simple macroscopic non-equilibrium thermodynamic model with a single internal variable reproduces instantaneous jump and relaxation. Velocity weakening appears as a consequence of a plasticity related nonlinear coefficient. Permanent part of displacement corresponds to plastic strain, and relaxation effects are analogous to creep in thermodynamic rheology.
Keywords
Cite
@article{arxiv.1312.4930,
title = {Thermodynamic aspects of rock friction},
author = {Noa Mitsui and P. Ván},
journal= {arXiv preprint arXiv:1312.4930},
year = {2014}
}
Comments
13 pages 3 figures. Revision: thermodynamic compatibility of velocity weakening