Rahim H, Roy S, Pöschel T (2026)
Publication Type: Journal article
Publication year: 2026
Book Volume: 114
Article Number: 035415
Journal Issue: 3
DOI: 10.1103/ft7h-8gb4
When a granular material composed of elongated grains is sheared in a split-bottom shear cell, a pressure difference develops within the material. This pressure difference depends on the interparticle friction, which affects shear localization and particle alignment. At high friction, alignment is confined to a narrow shear band, leading to localized increases in packing density and pressure. At low friction, the particles align over a wider region, leading to a nearly uniform packing density and pressure throughout the material. In contrast, assemblies of spherical particles exhibit a uniform packing density and pressure, independent of the friction coefficient. Elongated grains behave similarly to the Weissenberg effect in non-Newtonian fluids, where the normal stress differences are associated with pressure variations, in contrast to the nearly uniform pressure field observed for spherical particles.
APA:
Rahim, H., Roy, S., & Pöschel, T. (2026). Shear-induced pressure localization in granular materials of nonspherical particles. Physical Review E, 114(3). https://doi.org/10.1103/ft7h-8gb4
MLA:
Rahim, Huzaif, Sudeshna Roy, and Thorsten Pöschel. "Shear-induced pressure localization in granular materials of nonspherical particles." Physical Review E 114.3 (2026).
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