| 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
Densification dependent yield criteria for sodium silicate glasses - An atomistic simulation approach
Abstract
Silicate glasses are macroscopically brittle but ductile at the micron scale. This plastic response is complex: in open structure materials, such as amorphous silica, plastic yield results in significant densification. While, more compact structures (e.g. soda-silicate glasses) are known to suppress densification and promote shear flow. We have carried out atomic scale simulations to analyze the plastic response of a series of silicates with increasing sodium content. Quasi-static, multi-axial deformation tests were performed on large samples (approximate to 10(3) nm(3)). Their yield behavior was quantified at different stress states, by measuring permanent volume changes. Qualitative agreement was found between the response of modeled systems and experimental results. Strong coupling between plastic yield and densification was observed. Our results also suggest that sodium silicates may density not only under hydrostatic compression but also upon shear at large strains. Based on these numerical results, we propose a general yield criterion for soda-silicate glasses in which density is an internal variable. As density increases, the elliptic yield surface (characterizing amorphous silicates with open structures) gradually evolves into a Drucker-Prager-like model for fully densified samples.