Title:
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A new strategy to simulate particle crushing in DEM analysis
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Author:
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Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Calvetti, Francesco
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques |
Abstract:
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The discrete element method (DEM) is progressively gaining acceptance as a modelling tool for engineering problems of direct geotechnical relevance. One area for which the method seems naturally well adapted is that of crushable soils. Grain Crushing is
generally modeled using the discrete element method (DEM) via two alternative methods: replacing the breaking grains with new, smaller fragments; or by using agglomerates. The latter, despite being very helpful for the understanding of the micromechanics occurring in a
single grain, becomes an unpractical tool for the modeling of larger scale problems. In fact, when considering those alternatives there is always a need to balance computational expediency, accuracy of results and soundness of principle. This work focuses on the encounter of those two last requirements, as exemplified in a series of simulation of high pressure one-dimensional and isotropic compression of Fontainebleau sand. A recently developed model for crushable soils is briefly outlined. It is shown that the upscaling procedure adopted allows a considerable reduction of computational bargain without losing
accuracy in terms of grain size distribution evolution and mechanical response. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia -Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics -Granular materials--Mathematical models -Discrete element method -DEM analysis -crushable soils -particle failure -Mecànica dels sòls -- Mètodes numèrics |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE)
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