EPJ Web Conf.
Volume 249, 2021Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Published online||07 June 2021|
Rheology of soft granular materials: uniaxial compression
LMGC, Univ. Montpellier, CNRS, Montpellier, France
2 IATE, Univ. Montpellier, INRAE, Montpellier SupAgro, Montpellier, France
3 School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
* e-mail: saeid.nezamabadi@umontpellier
Published online: 7 June 2021
Soft granular materials are assemblies of highly deformable grains interacting via surface forces. The large grain deformations of these materials differ them from hard granular systems, in which, their behaviors are essentially governed by grain rearrangements. In this paper, we study the uniaxial compression of soft granular materials using a numerical approach based on the Material Point Method allowing for large grain deformations, coupled with the Contact Dynamics method for the treatment of unilateral frictional contacts between grains. Considering the neo-Hookean and elasto-plastic grains, the compaction of 2D soft granular packings is analyzed. We focus essentially on the evolution of the packing vertical stress as a function of the packing fraction and the predictive models are proposed.
A video is available at https://doi.org/10.48448/jnd0-h256
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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