| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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He, Huan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023An open natural language processing (NLP) framework for EHR-based clinical research: a case demonstration using the National COVID Cohort Collaborative (N3C)citations
- 2023DEM multi-scale insights on the pre-failure behavior of mature structured sandscitations
- 2022DEM analysis of small and small-to-medium strain shear modulus of sandscitations
- 2022Micromechanical insights on the stiffness of sands through grain-scale tests and DEM analyses
- 2016Influence of a bioadmixture on standardized parameters of cementitious materials
- 2016SHAPE ANALYSIS OF FINE AGGREGATES USED FOR CONCRETE ; Analyse morphologique d'agrégats fins utilisés dans le bétoncitations
- 2015Cement paste surface roughness analysis using Coherence Scanning Interferometry and Confocal Microscopycitations
- 2012Workability tests on fresh concrete formulated with eco-friendly admixture
- 2012Influence of Particle Packing on Elastic Properties of Concretecitations
- 2012Effet de l'empilement et de la forme des additions dans les propriétés des liants à matrice cimentaire
- 2011Influence of Particle Packing on Fracture Properties of Concretecitations
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document
Micromechanical insights on the stiffness of sands through grain-scale tests and DEM analyses
Abstract
The study of granular material behavior at multi-scales, i.e., macro, meso, and microscale through discrete element method (DEM) simulations calibrated with the macroscopic experimental data is the most common approach. However, this approach involves arbitrarily choosing the important particle contact parameters (density, contact normal and tangential stiffness, contact friction) used as input in DEM simulations which greatly affect the fabric formation and thereby influence the stress-strain response of granular materials. Therefore, a new micromechanical- based contact modeling approach is proposed in the present study where the particle contact properties are derived from micromechanical (grain-scale) tests (a range is suggested for normal contact stiffness and contact friction values) and are used as a reference for developing the DEM model.<br/>The DEM model analysis was implemented using a micromechanical-based contact modeling approach to assess the small-strain shear modulus (G<sub>max</sub>) behavior of sands. Multiscale insights were drawn while evaluating the influence of contact parameters such as particle Young’s modulus (E) and interparticle friction (μ) on the G<sub>max</sub> behavior of quartz sand. Additionally, the real sand grain contact characteristics evaluated using micromechanical tests along with the DEM analysis provided new insights into the roughness characteristics of granular materials.