AI Article Synopsis
- The study examines the jamming transition of frictionless disks in 2D under shear, focusing on two models of energy dissipation: one based on particle contact velocities and the other on average shear flow velocities.
- Both models show similar critical behaviors, suggesting that their differences may not significantly affect the jamming transition.
- Key metrics analyzed include pressure, viscosity, and friction coefficient, indicating a shared underlying physics despite differing dissipation approaches.
Article Abstract
We investigate the criticality of the jamming transition for overdamped shear-driven frictionless disks in two dimensions for two different models of energy dissipation: (i) Durian's bubble model with dissipation proportional to the velocity difference of particles in contact, and (ii) Durian's "mean-field" approximation to (i), with dissipation due to the velocity difference between the particle and the average uniform shear flow velocity. By considering the finite-size behavior of pressure, the pressure analog of viscosity, and the macroscopic friction σ/p, we argue that these two models share the same critical behavior.
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| http://dx.doi.org/10.1103/PhysRevLett.113.148002 | DOI Listing |
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