MEchanics GAthering -MEGA- Seminar: Numerical modeling and physical aspects of the frictional interfaces governed by the rate and state dependent friction law
Event details
| Date | 09.05.2019 |
| Hour | 16:15 › 17:30 |
| Speaker | Fabian Barras and Roozbeh Rezakhani, LSMS, EPFL |
| Location | |
| Category | Conferences - Seminars |
Abstract This edition of the MEGA.Seminar will be dedicated to the modeling of friction and particularly to the rate-and-state dependent models. This terminology describes a class of empirical friction laws derived in the eighties to describe the slight variations of the frictional force observed in experiments. These subtle variations of the friction coefficient allowed to rationalize important aspects of frictional systems, including the stick-slip instabilities or the nucleation of earthquakes along crustal faults. Consequently, rate-and-state friction laws received a significant attention in the past decades. Nevertheless these models still pose important scientific challenges, notably the question of the underlying physics behind their phenomenological approach and their stability for numerical modeling. This session will hence consist of two parts:
In the first part, the numerical procedures and stability of the methods for modeling rate-and-state friction will be presented.
In the second part, we will discuss the physics-based interpretation of these empirical models and how we can use it to rationalize the rupture dynamics computed with rate-and-state friction laws. This part culminates by discussing some important implications for the energy budget of earthquake ruptures. Numerical modeling of laboratory experiments of rupture propagation on geologic faults will be also discussed.
In the first part, the numerical procedures and stability of the methods for modeling rate-and-state friction will be presented.
In the second part, we will discuss the physics-based interpretation of these empirical models and how we can use it to rationalize the rupture dynamics computed with rate-and-state friction laws. This part culminates by discussing some important implications for the energy budget of earthquake ruptures. Numerical modeling of laboratory experiments of rupture propagation on geologic faults will be also discussed.
Practical information
- General public
- Free
Organizer
- MEGA.Seminar Organizing Committee