Abstract
This paper deals with an experimental and numerical investigation of mechanical behaviour and rupture of cohesive granular media. Cohesion is characterised experimentally, from a reference medium made of aluminium cylinders glued between them with an epoxy resin. For each type of loading (tension/compression, shearing and couple), experiments give a force-displacement relation, as well as a failure criterion. This local mechanical behaviour is then introduced in a numerical code based on a discrete element method. Finally, from a comparison between numerical and experimental compression test on macroscopic granular samples, we present a validation of the mechanical approach. The approach presented here enables to analyse the localisation of the deformation as well as the initiation and propagation of fractures in granular media.
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Delenne, JY., El Youssoufi, M.S., Bénet, JC. (2005). Approach of Mechanical Behaviour and Rupture of Cohesive Granular Media. Validation on a Model Medium. In: Frémond, M., Maceri, F. (eds) Mechanical Modelling and Computational Issues in Civil Engineering. Lecture Notes in Applied and Computational Mechanics, vol 23. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-32399-6_2
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DOI: https://doi.org/10.1007/3-540-32399-6_2
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-25567-3
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