Orateur
Prof.
Elsa Bayart
(ENS de Lyon)
Description
The first part of this lecture will be an introduction to the linear elastic fracture mechanics of brittle solids. In particular, we will focus on the emergence of a mechanical singularity and the dynamics of propagative ruptures. In the second part, we will see that frictional motion is a fracture process. Sliding between two solids occurs once the solid contacts are broken via the propagation of a brittle shear crack. We will show that fracture mechanics is a powerful tool to characterize the frictional properties of a solid interface, but not only. We willshow that friction provides a versatile platform for studying fracture dynamics and mechanical singularities: propagation and arrest criteria, equation of motion.
