| 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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Tanguy, Anne
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Thermomechanical dissipative behaviour of CuZr metallic glasses
- 2021Elasto-plastic behavior of amorphous materials: a brief review ; Comptes Rendus Physiquecitations
- 2021Shear Banding in a Contact Problem between Metallic Glassescitations
- 2020Continuum constitutive laws to describe acoustic attenuation in glassescitations
- 2020Influence of the shape and interconnection of nanoparticleson the lattice thermal conductivity in a c-Si/a-Si nanocomposite
- 2020Vibrational density of states of free and embedded semiconducting GaN nanoparticlescitations
- 2019Enhancement and anticipation of the Ioffe-Regel crossover in amorphous/nanocrystalline composites ; Exaltation et anticipation du crossover de Ioffe-Regel dans des composites amorphe/nanocristallinscitations
- 2017Effect of composition and pressure on the shear strength of sodium silicate glasses: An atomic scale simulation studycitations
- 2016Densification dependent yield criteria for sodium silicate glasses - An atomistic simulation approachcitations
- 2016Sodium effect on static mechanical behavior of MD-modeled sodium silicate glassescitations
- 2016Transition from ductile to brittle failure of sodium silicate glasses: a numerical studycitations
Places of action
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article
Sodium effect on static mechanical behavior of MD-modeled sodium silicate glasses
Abstract
The structural and elastic mechanical properties of xNa(2)O-(100-x)SiO2 sodium silicate glasses were computed and analyzed at different scales, using atomistic simulations and coarse-grain methods based on physical principles. The numerical simulations were performed on large samples (similar to 100(3) angstrom(3) box size with similar to 70 000 atoms), and the results were compared to experimental measurements. It was shown that the cutoff in the non-Coulombic part of the empirical interactions affects the pressure/density relations. Therefore, this value was tuned to achieve the experimental density at ambient pressure. As a result we obtained realistic mechanical and structural properties as well. With this model, we analyzed the elastic response of the samples for different sodium content. We showed, that experimentally measured elastic moduli result from a succession of micro-plastic rearrangements that must be taken into account when calculating microscopic elastic moduli. Moreover, we investigated the size dependence of the elastic moduli, and we showed a strong connection between small scale heterogeneous elasticity and sodium repartition. The transition from small scale to large scale description of elasticity should involve an accurate description of the spatial organization of sodium ions inside the silica network.