Towards minimal models for realistic granular materials: Tomographic analysis of bidispersed assemblies of ellipsoid

Radjai, F., Schaller, F.M., Punzmann, H., Schröder-Turk, G.E., Saadatfar, M., Nezamabadi, S., Luding, S. and Delenne, J.Y. (2017) Towards minimal models for realistic granular materials: Tomographic analysis of bidispersed assemblies of ellipsoid. EPJ Web of Conferences, 140 .

Abstract

In this paper, we report experimental results on granular compaction in a model system made of mono- and bidisperse ellipsoidal packings as well as sand packings with grain size polydispersity. The packings are subject to vertical tapping of varying duration (number of taps) and their internal three-dimensional structure is obtained using x-ray computed tomography. Particles positions and orientations are reconstructed and the global packing densities are computed. The analysis of the vertical and horizontal local packing fraction profiles reveal a homogeneous densification in the ellipsoidal packings, however, sand packings exhibit radial density gradient, possibly linked to the onset of convection.

Item Type:	Journal Article
Murdoch Affiliation:	School of Engineering and Information Technology
Publisher:	EDP Sciences
Copyright:	© 2017 The Authors
URI:	http://researchrepository.murdoch.edu.au/id/eprint/37923

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