Particle failure in DEM models of crushable soil response

M. O. Ciantia, Marcos Arroyo, A. Gens, F. Calvetti

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

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. To simulate crushing in soils using DEM a number of different alternatives are available. When considering those alternatives, as in other areas of applied numerical modelling, there is always a need to balance computational expediency, accuracy of results and soundness of principle. This communication focuses on the encounter of those two last requirements, as exemplified in a series of simulation of one-dimensional compression of a silica sand to high pressures (up to 100MPa).A recently developed model for crushable soils is briefly outlined and the role of several parameters is illuminated by a parametric analysis. It is shown that using the same model for single-grain platen crush tests results in a different choice of optimal parameters than what will be inferred from simply matching the oedometric results. The apparent contradiction might be resolved by combining the particle crushing model with a more refined contact model.

Original languageEnglish
Title of host publicationNumerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014
PublisherTaylor & Francis
Pages345-350
Number of pages6
Volume1
ISBN (Print)9781138026872
Publication statusPublished - 2014
Event8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014 - Delft, Netherlands
Duration: 18 Jun 201420 Jun 2014

Conference

Conference8th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2014
CountryNetherlands
CityDelft
Period18/06/1420/06/14

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