Poster #136, Fault and Rupture Mechanics (FARM)
Origins of roughness evolution and strategies for its implementation on rate-state faults
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Poster Presentation
2021 SCEC Annual Meeting, Poster #136, SCEC Contribution #11254 VIEW PDF
w faults evolve through wear processes.
Here, by means of extensive atomistic simulations, we first show the role of third body (gouge), interfacial adhesion, and scale-dependent deformation mechanisms in driving a model system to exhibit the observed fractal morphology. The results complement recent findings suggesting that the fractality of faults is linked to the rock strength being scale-dependent. We also briefly address a mechanical model for third body growth which can inspire further investigations in fault wear and roughness evolution.
Finally, building upon these observations, we present ongoing developments in the modelling of roughness evolution in rate-state faults within a quasi-dynamic boundary element code.
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Here, by means of extensive atomistic simulations, we first show the role of third body (gouge), interfacial adhesion, and scale-dependent deformation mechanisms in driving a model system to exhibit the observed fractal morphology. The results complement recent findings suggesting that the fractality of faults is linked to the rock strength being scale-dependent. We also briefly address a mechanical model for third body growth which can inspire further investigations in fault wear and roughness evolution.
Finally, building upon these observations, we present ongoing developments in the modelling of roughness evolution in rate-state faults within a quasi-dynamic boundary element code.
SHOW MORE