On the incremental behaviour of sands at high stresses

Matteo Ciantia, Marcos Arroyo, Antonio Gens

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Abstract

The mechanical behaviour of granular materials is characterized by strong non-linearity and irreversibility. In particular, particle breakage will induce additional plastic deformations beyond those which might be expected for a rigid particle assumption. When defining a constitutive model, experimental data on the nature of the incremental response of the material is desirable. However, the experiments are very challenging and therefore test simulations using the discrete element method (DEM) are very useful. In this work, the incremental behaviour of crushable granular soils is investigated using the DEM by simulating 3D axisymmetric stress probes experiments on a Fontainebleau sand analogue. Particle breakage is permitted and the initial high stress condition is such that crushing will occur along some of the loading directions. The results show that particle crushing induces a change in the direction of the plastic flow and that this direction is independent of the loading path.
Original languageEnglish
Title of host publicationProceedings of the XVII ECSMGE-2019
Subtitle of host publicationGeotechnical Engineering foundation of the future
PublisherInternational Society for Soil Mechanics and Geotechnical Engineering
Number of pages8
ISBN (Print) 978-9935-9436-1-3
DOIs
Publication statusE-pub ahead of print - Sep 2019
Event17th European Conference on soil Mechanics and Geotechnical Engineering (ECSMGE 2019) - Reykjavik, Reykjavik, Iceland
Duration: 1 Sep 20196 Sep 2019
https://www.ecsmge-2019.com/

Conference

Conference17th European Conference on soil Mechanics and Geotechnical Engineering (ECSMGE 2019)
CountryIceland
CityReykjavik
Period1/09/196/09/19
Internet address

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    Ciantia, M., Arroyo, M., & Gens, A. (2019). On the incremental behaviour of sands at high stresses. In Proceedings of the XVII ECSMGE-2019 : Geotechnical Engineering foundation of the future International Society for Soil Mechanics and Geotechnical Engineering. https://doi.org/10.32075/17ECSMGE-2019-0959