Understanding slow compression of frictional granular particles by network analysis
Kianoosh Taghizadeh1,2, Stefan Luding1, Rituparna Basak3
1MSM, TFE-ET, MESA+, University of Twente, PO Box 217, 7500AE Enschede, The Netherlands. k.taghizadehbajgirani@utwente.nl.
Soft Matter
|August 2, 2024
Summary
Frictional granular packings exhibit unique behaviors above jamming. Friction influences system evolution, causing slow-downs and altering force network dynamics and structure.
Area of Science:
- Physics
- Materials Science
- Complex Systems
Background:
- Granular materials exhibit jamming transitions.
- System evolution involves smooth phases and rapid events.
- Force networks correlate with pressure and kinetic energy.
Purpose of the Study:
- Investigate frictional granular packings above jamming.
- Analyze the impact of friction on system dynamics and force networks.
- Understand event-driven behavior in compressed granular systems.
Main Methods:
- Quasi-static compression of frictional granular packings.
- Analysis of force networks and particle dynamics.
- Comparison with frictionless systems.
Main Results:
- Friction alters event frequency and timescales.
- Slow-down phenomena observed after events, linked to reduced non-affine dynamics.
- Friction modifies network structure (contact number, topology) and dynamics.
Conclusions:
- Friction significantly impacts granular packing behavior above jamming.
- Slow-downs are friction-dependent and reduce particle rearrangement.
- Friction leads to more stable force networks with altered structural and dynamic properties.
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