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Accueil du site > Séminaires > Séminaires 2021 > MSC Visio-Seminar. May 10th 2021. Elsa Bayart (ENS Lyon) : "Solid friction : heterogeneities and rupture arrest".

MSC Visio-Seminar. May 10th 2021. Elsa Bayart (ENS Lyon) : "Solid friction : heterogeneities and rupture arrest"

Sauf mention contraire, les séminaires et les soutenances se déroulent à 11h30 en salle 454A du bâtiment Condorcet.


There will be a live diffusion with Zoom. Monday May10th 11h30

Contact Michael Berhanu to attend the video seminar

Solid friction : heterogeneities and rupture arrest

Elsa Bayart Laboratoire de Physique de l’ENS de Lyon

The most common mechanism for an earthquake is a rupture front propagating along a fault, which breaks the solid contacts formed between the two fault faces. Ruptures are often arrested before spanning the entire length of the fault. The determination of the mechanisms responsible for rupture arrest is of particular interest for understanding an earthquake’s magnitude selection. We mimic a fault in the lab by pressing and shearing two solid blocks until sliding motion initiates. Propagating ruptures have been shown to be true shear cracks, driven by singular fields at their tip. Performing high temporal resolution measurements of the real contact area and strain fields, we demonstrate that an arrest criterion derived from fracture mechanics theory is valid to determine if and where a rupture will arrest along frictional interfaces with heterogeneous fracture properties and complex stress distributions at a macroscopic scale.


Contact : Équipe séminaires / Seminar team - Published on / Publié le 9 avril


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