This title appears in the Scientific Report :
2018
Please use the identifier:
http://hdl.handle.net/2128/21264 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.121.234302 in citations.
Unstable Slip Pulses and Earthquake Nucleation as a Nonequilibrium First-Order Phase Transition
Unstable Slip Pulses and Earthquake Nucleation as a Nonequilibrium First-Order Phase Transition
The onset of rapid slip along initially quiescent frictional interfaces, the process of “earthquake nucleation,” and dissipative spatiotemporal slippage dynamics play important roles in a broad range of physical systems. Here we first show that interfaces described by generic friction laws feature s...
Saved in:
Personal Name(s): | Brener, Efim A. (Corresponding author) |
---|---|
Aldam, Michael / Barras, Fabian / Molinari, Jean-François / Bouchbinder, Eran | |
Contributing Institute: |
Theoretische Nanoelektronik; PGI-2 |
Published in: | Physical review letters, 121 (2018) 23, S. 234302 |
Imprint: |
College Park, Md.
APS
2018
|
DOI: |
10.1103/PhysRevLett.121.234302 |
PubMed ID: |
30576171 |
Document Type: |
Journal Article |
Research Program: |
Controlling Collective States |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.121.234302 in citations.
The onset of rapid slip along initially quiescent frictional interfaces, the process of “earthquake nucleation,” and dissipative spatiotemporal slippage dynamics play important roles in a broad range of physical systems. Here we first show that interfaces described by generic friction laws feature stress-dependent steady-state slip pulse solutions, which are unstable in the quasi-1D approximation of thin elastic bodies. We propose that such unstable slip pulses of linear size L∗ and characteristic amplitude are “critical nuclei” for rapid slip in a nonequilibrium analogy to equilibrium first-order phase transitions and quantitatively support this idea by dynamical calculations. We then perform 2D numerical calculations that indicate that the nucleation length L∗ exists also in 2D and that the existence of a fracture mechanics Griffith-like length LG<L∗ gives rise to a richer phase diagram that features also sustained slip pulses. |