Agglomerates of wet particles: effect of size distribution

Autor: Trung Vo, Thanh, Mutabaruka, Patrick, Nezamabadi, Saeid, Delenne, Jean-Yves, Izard, Edouard, Pellenq, Rolland, Radjai, Farhang
Přispěvatelé: Physique et Mécanique des Milieux Divisés (PMMD), Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Danang Architecture University (DAU), Multiscale Material Science for Energy and Environment (MSE 2), Massachusetts Institute of Technology (MIT), Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), ArcelorMittal Maizières Research SA, ArcelorMittal
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: 29th ALERT Geomaterials Workshop
29th ALERT Geomaterials Workshop, Oct 2018, Aussois, France
Popis: International audience; We analyze the strength of agglomerates of wet frictional particles subjected to axial compression by means of particle dynamics simulations. The numerical model accounts for the cohesive and viscous effects of the binding liquid up to a debonding distance [1]. We show that wet agglomerates undergo plastic deformation due to the rearrangements of primary particles during compression [2]. The compressive strength is characterized by the plastic threshold before the onset of failure by the irreversible loss of wet contacts between primary particles [3]. The agglomerate plastic threshold is proportional to the characteristic cohesive stress defined from the liquid-vapor surface tension and the mean diameter of primary particles, with a pre-factor that is a nearly linear function of the debonding distance and increases with size span. We analyze the effect of particle size distribution and show that the plastic strength is an increasing function of the size ratio when the size of the particles in the largest size class is increased.References1. F. Radjai, F. Dubois, Discrete-element modeling of granular materials (Wiley-Iste, 2011)2. T-Trung. Vo, P. Mutabaruka, J-Y. Delenne, S. Nezamabadi, F. Radjai, EPJ Web Conf. 140, 08021 (2017)3. T-Trung. Vo, P. Mutabaruka, S. Nezamabadi, J.Y. Delenne, E. Izard, R. Pellenq, F. Radjai, Mechanics Research Communications 92, (2018)
Databáze: OpenAIRE
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