| 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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Olsson, Pär
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Revealing the role of oxygen on the defect evolution of electron-irradiated tungsten: A combined experimental and simulation studycitations
- 2023Micromechanical modeling of single crystal and polycrystalline UO2 at elevated temperaturescitations
- 2023Micromechanical modeling of single crystal and polycrystalline UO 2 at elevated temperaturescitations
- 2023Interstitial hydrogen diffusion in M7C3 (M = Cr, Mn, Fe)citations
- 2022A combined experimental and theoretical study of small and large vacancy clusters in tungstencitations
- 2022Cu precipitation in electron-irradiated iron alloys for spent-fuel canisterscitations
- 2022Hard and soft materials: putting consistent van der Waals density functionals to workcitations
- 2021Coated UN microspheres embedded in UO2 matrix as an innovative advanced technology fuel: Early progress
- 2021Modelling the primary damage in Fe and W: Influence of the short range interactions on the cascade properties: Part 1 – Energy transfercitations
- 2021Theoretical and Experimental Aspects of Current and Future Research on NbO2 Thin Film Devicescitations
- 2021Elastic dipole tensors and relaxation volumes of point defects in concentrated random magnetic Fe-Cr alloyscitations
- 2017Introducing $ab initio$ based neural networks for transition-rate prediction in kinetic Monte Carlo simulationscitations
- 2017Assessment of fracture energy of polyethylene
- 2016Investigation of microstructure evolution during self-annealing in thin Cu films by combining mesoscale level set and ab initio modelingcitations
- 2015Assessment of the dislocation bias in fcc metals and extrapolation to austenitic steelscitations
- 2015Stability and mobility of small vacancy-solute complexes in Fe-MnNi and dilute Fe-X alloys : A kinetic Monte Carlo studycitations
- 2009Semi-empirical atomistic study of point defect properties in BCC transition metalscitations
- 2009Atomistic studies of nano-structural mechanical behavior and point defects
- 2005Modelling of Formation and Evolution of Defects and Precipitates in Fe-Cr Alloys of Reactor Relevance
Places of action
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article
Micromechanical modeling of single crystal and polycrystalline UO2 at elevated temperatures
Abstract
Modelling of UO2 mechanical behavior requires detailed knowledge of the local stresses and strains during the fuel’s operation in normal and accident conditions. Therefore, a crystal plasticity formulation is proposed for polycrystalline UO. The model contains a dislocation-density-based formulation including three slip families and their interactions. The model is parametrized with single crystal and polycrystal experimental data using an optimization scheme. The model’s capability to represent yield point, strain hardening behavior, temperature and strain rate dependencies are evaluated. Finally, different approaches to include porosity at the polycrystal are analyzed to assess the effect of porosity on homogenized macroscopic stress-strain behavior, and stress/strain localization at the grain level.