EPJ Web Conf.
Volume 249, 2021Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Section||Cohesive Granular Materials|
|Published online||07 June 2021|
Slow and intermittent stress relaxation of biomass granular media
Université Grenoble Alpes, CEA Liten, DTBH, 17 avenue des Martyrs, Grenoble Cedex 09, 38054, France
2 Centre RAPSODEE, UMR CNRS 5302 – IMT Mines Albi, Campus Jarlard, Albi Cedex 09, 81013, France
3 Agence de l’Environnement et de la Maîtrise de l’Energie, 20 avenue du Grésillé- BP 90406, Angers Cedex 01, 49004, France
* Corresponding author : firstname.lastname@example.org
Published online: 7 June 2021
In the present work, the relaxation of several wood powders has been investigated in an annular shear cell. It is found that the slow logarithmic relaxation commonly observed for various materials including granular materials is interrupted by large events. Their frequency and amplitude are investigated with respect to particle size and stress-history by measuring stresses and strain. These large events during the relaxation appear to be controlled by the deformation. The coarser the particles are, the bigger is the deformation of the powder bed between two fast relaxation events and during the event.
A video is available at https://doi.org/10.48448/j300-5254
© The Authors, published by EDP Sciences, 2021
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