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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
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article
Effect of composition and pressure on the shear strength of sodium silicate glasses: An atomic scale simulation study
Abstract
The elastoplastic behavior of sodium silicate glasses is studied at different scales as a function of composition and pressure, with the help of quasistatic atomistic simulations. The samples are first compressed and then sheared at constant pressure to calculate yield strength and permanent plastic deformations. Changes occurring in the global response are then compared to the analysis of local plastic rearrangements and strain heterogeneities. It is shown that the plastic response results from the succession of well-identified localized irreversible deformations occurring in a nanometer-size area. The size and the number of these local rearrangements, as well as the amount of internal deviatoric and volumetric plastic deformation, are sensitive to the composition and to the pressure. In the early stages of the deformation, plastic rearrangements are driven by sodium mobility. Consequently, the elastic yield strength decreases when the sodium content increases, and the same when pressure increases. Finally, good correlation was found between global and local stress-strain relationships, reinforcing again the role of sodium ions as local initiators of the plastic behavior observed at larger scales.