| 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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Vincent, Ludovic
CEA Saclay
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024High Cycle Thermal Fatigue of two austenitic stainless steelscitations
- 2023Brittle fracture mechanisms of three model low alloy steels chemically representative of macrosegregated forgings
- 2023Brittle fracture mechanisms of three model low alloy steels chemically representative of macrosegregated forgings
- 2023A probabilistic modeling of the brittle fracture of low alloy steels constituting the heavy components of nuclear reactors
- 2020Hybrid multiview correlation for measuring and monitoring thermomechanical fatigue testcitations
- 2019Prediction of irradiation hardening Reactor Pressure Vessel steels: Multiscale modeling of crystal plasticitycitations
- 2019Crack initiation and propagation under thermal fatigue of austenitic stainless steelcitations
- 2018High cycle thermal fatigue of austenitic stainless steel
- 2018Multiscale modeling of crystal plasticity in Reactor Pressure Vesselsteels: Prediction of irradiation hardening
- 2018Study of the tensile anisotropy of extruded ODS steel tubes using notched rings
- 2018Thermomechanical field measurements by hybrid stereocorrelation
- 2018Creep and damage anisotropies of 9%Cr and 14 %Cr ODS steel cladding
- 2016Characterization of temperature and strain fields during cyclic laser shockscitations
- 2015Characterization of temperature and strain fields during cyclic laser shockscitations
- 2011Identification and probabilistic modeling of mesocrack initiations in 304L stainless steel
- 2010Etude de l'endommagement d'un acier inoxydable austénitique par fatigue multiaxiale à grand nombre de cycles (Damage study of an austenitic stainless steel in high cycle multiaxial fatigue regime)
- 2008On the ability of some cyclic plasticity models to predict the evolution of stored energy in a type 304L stainless steel submitted to high cycle fatigue
- 2002Une amélioration de la description du phénomène de déformation progressive dans les métaux par la prise en compte de la distorsion du domaine d'élasticité
Places of action
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thesis
Une amélioration de la description du phénomène de déformation progressive dans les métaux par la prise en compte de la distorsion du domaine d'élasticité
Abstract
If a metal is submitted to cyclic loading under a non-zero mean stress, plastic strain may accumulate, generally in the direction of mean stress, over the cycles: this is rachetting.<br />The background of the Ph.D. Thesis was the improvement of the description of this phenomenon un metallic structures. Towards this end, we have chosen to focus our attention on the phenomenological macroscopic models that describe material behaviour in structural computations.<br />As suggested in several articles, one way of improvement was to take into account yield surface distortion, a phenomenon many times observed experimentally but neglected up to now for simplicity. In order to introduce properly this new element into the modelization, we have used a dialogue between a micro-macro model (more relevant from a physical point of view but also more CPU time consumer) and the macroscopic model to build. We have taken advantage of the informations given by the micro-macro model to build a macroscopic model that can describe multiaxial ratchetting as well as the yield surface distortions predicted by the micro-macro model, over a large base of "virtual tests". Then, the model thus developped has been successfully identified and validated on several complex experimental results obtained on the volume element of a real material. A final validation of the model on a non homogeneous (structural) test is under investigation.