| 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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Largenton, Rodrigue
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024High frequency acoustic microscopy imaging of pellet cladding interface in nuclear fuel rods
- 2024High frequency acoustic microscopy imaging of pellet cladding interface in nuclear fuel rods
- 2022Proximity Effects in Matrix-Inclusion Composites: Elastic Effective Behavior, Phase Moments, and Full-Field Computational Analysiscitations
- 2022Multiscale modelling of polycrystalline UO2: full-field simulations (FFT) and model-reduction approach (NTFA)
- 2022Efficiency of boundary conditions on the computation of local fields in a Representative Volume Element
- 2022Multiscale modelling of polycrystalline UO2: full-field simulations (FFT) and model reduction technique (NTFA)
- 2014Extension of the Nonuniform Transformation Field Analysis to linear viscoelastic composites in the presence of aging and swellingcitations
- 2013Comportement d'un composite visco-élastique linéaire vieillissant avec déformation libre : réduction par la méthode NTFA
- 2012Plastic strain heterogeneity in MOX nuclear fuel (composite material) and the Nonuniform Transformation Field Analysis.
- 2012Plastic strain heterogeneity in composite materials and the nonuniform transformation field analysis
- 2012Modélisation du comportement effectif du combustible MOX par une analyse micro-mécanique en champs de transformation non uniformes
Places of action
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conferencepaper
Multiscale modelling of polycrystalline UO2: full-field simulations (FFT) and model-reduction approach (NTFA)
Abstract
This numerical study presents a micromechanical modelling of uranium dioxide, a polycrystalline ceramic used in pressurised water reactors, using a full-field (FFT [17]) approach and a reduced order (NTFA-TSO [15]) model for loading conditions representative of a reactivity initiated accident. Above a transition temperature, UO2 exhibits an elasto-viscoplastic behaviour with strain hardening sensitive to the loading conditions temperature and macroscopic strain rate. In a first step and via the Full-Field approach, an inverse calibration of the local viscoplastic strain-hardening evolution law is performed based on macroscopic scale experimental data [13, 16]. In a second step, the NTFA-TSO model [15] is developed and applied to the problem by using two approaches: the strain hardening taken, as in the reference [15], as constant per grain or taken as decomposed, like modes associated with viscoplastic deformation. Finally and for three cases, the two approaches are compared macroscopically and locally. The macroscopic responses of theses two approaches are also compared to experimental results [13, 16].