| Issue |
EPJ Web Conf.
Volume 340, 2025
Powders & Grains 2025 – 10th International Conference on Micromechanics on Granular Media
|
|
|---|---|---|
| Article Number | 04010 | |
| Number of page(s) | 4 | |
| Section | Jamming, Rigidity and Shear-Thickening Transitions | |
| DOI | https://doi.org/10.1051/epjconf/202534004010 | |
| Published online | 01 December 2025 | |
https://doi.org/10.1051/epjconf/202534004010
Packing behavior of cohesive deformable grains
1 LMGC, CNRS, Univ. Montpellier, 34090 Montpellier, France
2 IATE, CIRAD, INRAE, Montpellier SupAgro, Univ. Montpellier, F-34060, Montpellier, France
3 School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 1 December 2025
Abstract
Soft highly deformable particles are commonly found in biomass and industrial bio-products. Unlike most mineral grains, these particles exhibit significant deformation and shape changes even under moderate stress levels. In this study, we employ a continuum-discrete numerical approach to investigate the mechanical behavior of packings composed of cohesive soft disks. Our analysis includes the coordination number and particle shape evolution, the latter being quantified by a parameter that measures deviation from a circular shape. We find that during uniaxial compression of a packing initially composed of circular particles, the packing fraction at the jamming point, the coordination number and the shape parameter all increase with surface energy. During decompression, the combined effects of particle deformability and adhesion result in residual stresses and non-circular particle geometries. Both in loading and unloading, we observe a transition between a regime dominated by external stress and one dominated by internal cohesive stress.
© The Authors, published by EDP Sciences, 2025
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