AI Article Synopsis
- The study investigates the steady-state flow of bidisperse soft-core disks under shear, revealing a connection to Bagnoldian rheology.
- It identifies a critical parameter Q*(ϕ) that distinguishes between strongly inelastic (Q < Q*) and weakly inelastic (Q > Q*) collision regimes, with implications for particle packing fraction ϕ.
- Near the jamming transition (ϕ → ϕ_J), the behavior of the system aligns with strongly inelastic dynamics, suggesting consistent collision characteristics across varying Q values.
Article Abstract
We carry out constant volume simulations of steady-state, shear-driven flow in a simple model of athermal, bidisperse, soft-core, frictionless disks in two dimensions, using a dissipation law that gives rise to Bagnoldian rheology. Focusing on the small strain rate limit, we map out the rheological behavior as a function of particle packing fraction ϕ and a parameter Q that measures the elasticity of binary particle collisions. We find a Q^{*}(ϕ) that marks the clear crossover from a region characteristic of strongly inelastic collisions, Q
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| http://dx.doi.org/10.1103/PhysRevE.95.012902 | DOI Listing |
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