4 papers
Origin of geometric cohesion in non-convex granular materials: interplay between interdigitation and rotational constraints enhancing frictional stability
Jonathan Barés, Arnaud Regazzi, David Aponte +4
We present a series of experiments investigating the local microstructure of cylindrical piles composed of highly concave particles. By systematically varying particle geometry --…
Loading-dependent microscale measures control bulk properties in granular material: an experimental test of the Stress-Force-Fabric relation
Carmen L. Lee, Ephraim Bililign, Emilien Azéma +1
The bulk behaviour of granular materials is tied to its mesoscale and particle-scale features: strength properties arise from the buildup of various anisotropic structures at the p…
Particle scale anisotropy controls bulk properties in sheared granular materials
Carmen L. Lee, Ephraim Bililign, Emilien Azéma +1
The bulk dynamics of dense granular materials arise through a combination of particle-scale and mesoscale effects. Theoretical and numerical studies have shown that collective effe…
Flow regimes and repose angle in a rotating drum filled with highly concave particles
Weiyi Wang, Jonathan Barés, Emilien Azéma
We present a series of experiments investigating the flow regimes and repose angles of highly concave particle packings in a rotating drum. By varying grain geometry from spherical…