Micromechanics of Rock Friction .3. Quantitative Modeling of Base Friction

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
1995
Editor: 
Journal Title: 
Journal of Geophysical Research-Solid Earth
Journal Date: 
Mar 10
Place Published: 
Tertiary Title: 
Volume: 
100
Issue: 
B3
Pages: 
4243-4247
Section / Start page: 
Publisher: 
ISBN Number: 
0148-0227
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:A1995QM54700033
LDEO Publication Number: 
Call Number: 
Abstract: 

A micromechanical model far friction of brittle elastic solids is introduced and applied to rock friction. It is assumed that contacts are characterized by an adhesive shear strength, a material property that is the only free variable in the formulation. The net contact state of rough surfaces is calculated from elastic contact theory based on the measured topography of the surfaces. The model is tested by comparing it with friction measured with the same surfaces. Good agreement between theory and experiment was obtained from the initial application of shear stress to the onset of steady-state friction. The early stages of friction were predicted by the model based on the initial surface topographies and including the contributions of both normal and oblique contacts. Slip hardening was successfully modeled by including the evolution of the surface topography and contact state due to wear.

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Qm547Times Cited:4Cited References Count:25

DOI: