Thibault Roch
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View article: The Decrease of Static Friction Coefficient with Interface Growth from Single to Multiasperity Contact
The Decrease of Static Friction Coefficient with Interface Growth from Single to Multiasperity Contact Open
The key parameter for describing frictional strength at the onset of sliding is the static friction coefficient. Yet, how the static friction coefficient emerges at the macroscale from contacting asperities at the microscale is still an op…
View article: Impact of multiscale heterogeneities on the nucleation of earthquakes
Impact of multiscale heterogeneities on the nucleation of earthquakes Open
Earthquake nucleation is traditionally described using cascading or slow pre-slip models. In the latter, nucleation occurs as the sudden transition from quasi-static slip growth to dynamic rupture propagation. This typically occurs when a …
View article: Dynamic Crack-Front Deformations in Cohesive Materials
Dynamic Crack-Front Deformations in Cohesive Materials Open
Crack fronts deform due to heterogeneities, and inspecting these deformations can reveal local variations of material properties, and help predict out-of-plane damage. Current models neglect the influence of a finite dissipation length sca…
View article: The dynamics of unsteady frictional slip pulses
The dynamics of unsteady frictional slip pulses Open
Self-healing slip pulses are major spatiotemporal failure modes of frictional systems, featuring a characteristic size $L(t)$ and a propagation velocity $c_{\rm p}(t)$ ($t$ is time). Here, we develop a theory of slip pulses in realistic ra…
View article: Dynamic crack front deformations in cohesive materials
Dynamic crack front deformations in cohesive materials Open
Crack fronts deform due to heterogeneities, and inspecting these deformations can reveal local variations of material properties, and help predict out of plane damage. Current models neglect the influence of a finite dissipation length-sca…
View article: cRacklet: a spectral boundary integral method library for interfacial rupture simulation
cRacklet: a spectral boundary integral method library for interfacial rupture simulation Open
The study of dynamically propagating rupture along interfaces is of prime importance in various fields and system sizes, including tribology (nm to μm), engineering (mm to m) and geophysics (m to km) (Armstrong-Hélouvry et al., 1994; Ben-Z…
View article: Earthquake Nucleation Along Faults With Heterogeneous Weakening Rate
Earthquake Nucleation Along Faults With Heterogeneous Weakening Rate Open
The transition from quasistatic slip growth to dynamic rupture propagation constitutes one possible scenario to describe earthquake nucleation. If this transition is rather well understood for homogeneous faults, how the friction propertie…
View article: Earthquake Nucleation along Faults with Heterogeneous Weakening Rate
Earthquake Nucleation along Faults with Heterogeneous Weakening Rate Open
Data associated to the figures of the articule entitled ``Earthquake Nucleation along Faults with Heterogeneous Weakening Rate'' published in Geophysical Research Letters
View article: Velocity-driven frictional sliding: Coarsening and steady-state pulse trains
Velocity-driven frictional sliding: Coarsening and steady-state pulse trains Open
Frictional sliding is an intrinsically complex phenomenon, emerging from the interplay between driving forces, elasto-frictional instabilities, interfacial nonlinearity and dissipation, material inertia and bulk geometry. We show that homo…
View article: cRacklet simulations for "Velocity-driven frictional-sliding, Coarsening and steady-state pulse trains"
cRacklet simulations for "Velocity-driven frictional-sliding, Coarsening and steady-state pulse trains" Open
This upload contains the code used to conduct velocity-driven frictional simulations discussed in the manuscript "Velocity-driven frictional sliding: Coarsening and steady-state pulse trains" by Thibault Roch, Efim A. Brener, Jean-François…
View article: Instability regimes in the onset of motion along disordered frictional surfaces
Instability regimes in the onset of motion along disordered frictional surfaces Open
The onset of frictional motion is characterized by the transition from quasi-static stable slip growth to dynamic unstable crack propagation. Here, we investigate how microscopic heterogeneities influence the macroscopic stability of disor…
View article: Interplay between Process Zone and Material Heterogeneities for Dynamic Cracks
Interplay between Process Zone and Material Heterogeneities for Dynamic Cracks Open
In the context of dynamic fracture propagation along an heterogeneous domain, it has been shown in [1] how the presence of small-scale heterogeneities can impact the rupture dynamics of a crack. In the particular case of a mode-II crack pr…
View article: Dynamic fracture in heterogeneous media
Dynamic fracture in heterogeneous media Open
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