2025/02/19 by Huzaif Rahim, Sudeshna Roy, Rahim, Huzaif +3 · 1 citation
Engineering · #FOS: Physical sciences #Geotechnical and Geomechanical Engineering #Granular flow and fluidized beds #Soft Condensed Matter (cond-mat.soft) #Tunneling and Rock Mechanics
paper · pdf · doi:10.48550/arxiv.2502.13739
openalex publication_date 2025/02/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The interplay between dilatancy and particle alignment in sheared granular materials composed of non-spherical particles leads to morphological inhomogeneity. Dilatancy, driven by interparticle friction, causes the packing to expand, while particle alignment tends to densify it. We examine the influence of friction, particle aspect ratio, and initial packing conditions on the steady-state particle alignment and packing density. Unlike spherical particles, non-spherical particles with higher AR exhibit either dilatancy or compaction under shear, leading to spontaneous heaping or depression formation. We analyzed the evolution of packing density to identify whether dilatancy or compression prevails within the shear band.