5 papers
Shear-induced pressure anisotropy in granular materials of nonspherical particles
Huzaif Rahim, Sudeshna Roy, Thorsten Pöschel
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…
Rebound Suppression Mechanisms of Particle-Filled Flexible Shells for Small Body Landings
Tongge Wen, Xiaoyu Yang, Sudeshna Roy +2
The extremely weak gravity on small bodies makes landers prone to rebound and uncontrolled drift. To mitigate this, the Hayabusa2 mission employed a particle-filled flexible shell,…
Impact of friction and grain shape on the morphology of sheared granular media
Huzaif Rahim, Sudeshna Roy, Thorsten Pöschel
The interplay between dilatancy and particle alignment in sheared granular materials composed of non-spherical particles leads to morphological inhomogeneity. Dilatancy, driven by…
Comparison of bulk properties of wet granular materials using different capillary force approximations
Meysam Bagheri, Sudeshna Roy, Thorsten Pöschel
We perform Discrete Element Method simulations of wet granular matter in a split-bottom shear cell. To calculate the capillary forces from the liquid bridges between the grains, we…
Alignment-induced depression and shear thinning of anisotropic granular media
Huzaif Rahim, Vasileios Angelidakis, Thorsten Pöschel +1
When granular materials of shape-anisotropic grains are sheared in a split-bottom shear cell, a localized shear band is formed with a depression at its center. This effect is close…