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Modélisation du comportement mécanique d'un matériau granulaire composite par la méthode des éléments discrets

Abstract : Composites granular materials are frequent components of geotechnical structures. They are composed of different size and nature of particles which generate a complex behaviour difficult to appreciate in experiments. A three-dimensional discrete element model and a specific procedure were developed to simulate the macroscopic behaviour of these materials under triaxial loading.
The numerical model implements non convex elements and is based on a parameter calibration procedure. This approach is validated by comparison with experimental tests on homogeneous granular materials for a variety of relative densities. Simulations are applied with sand – gravel and sand – tyre chips mixtures for different mixing ratios and results are compared with experimental ones. The influence of shape and relative size of elements is discussed.
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https://tel.archives-ouvertes.fr/tel-00203393
Contributor : Christophe Salot <>
Submitted on : Wednesday, January 9, 2008 - 9:38:54 PM
Last modification on : Thursday, November 19, 2020 - 3:54:37 PM
Long-term archiving on: : Tuesday, April 13, 2010 - 3:27:54 PM

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  • HAL Id : tel-00203393, version 1

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Christophe Salot. Modélisation du comportement mécanique d'un matériau granulaire composite par la méthode des éléments discrets. Sciences de l'ingénieur [physics]. Université Joseph-Fourier - Grenoble I, 2007. Français. ⟨tel-00203393⟩

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