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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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Scherer, Jean-Michel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Tensile and micro-compression behaviour of AISI 316L austenitic stainless steel single crystals at 20°C and 300°C: experiments, modeling and simulationscitations
- 2022Micromorphic crystal plasticity approach to damage regularization and size effects in martensitic steelscitations
- 2020Lagrange multiplier based vs micromorphic gradient-enhanced rate-(in)dependent crystal plasticity modelling and simulationcitations
- 2020Localisation de la déformation et rupture ductile dans les monocristaux : application aux aciers austénitiques inoxydables irradiés ; Strain localization and ductile fracture in single crystals : application to irradiated austenitic stainless steels
- 2020Localisation de la déformation et rupture ductile dans les monocristaux : application aux aciers austénitiques inoxydables irradiés
- 2020Strain localization and ductile fracture in single crystals : application to irradiated austenitic stainless steels ; Localisation de la déformation et rupture ductile dans les monocristaux : application aux aciers austénitiques inoxydables irradiés
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article
Micromorphic crystal plasticity approach to damage regularization and size effects in martensitic steels
Abstract
reduced micromorphic model is formulated in the scope of crystal plasticity and crystalline cleavage damage. The finite strain formulation utilizes a single additional microvariable that is used to regularize localized inelastic deformation mechanisms. Damage is formulated as a strain-like variable to fit the generalized micromorphic microslip and/or microdamage based formulation. Strategies of treating slip and damage simultaneously and separately as non-local variables are investigated. The model accounts for size-effects that simultaneously affect the hardening behavior and allow to predict finite width damage localization bands. The results show that the micromorphic extension introduces extra-hardening in the vicinity of grain boundaries and slip localization zones in polycrystals. At the single crystal level slip band width is regularized. Two ways of dealing with damage localization were identified: An indirect method based on controlling width of slip bands that act as initiation sites for damage and a direct method in which damage flow is regularized together with or separately from plastic slip. Application to a real martensitic steel microstructure is investigated.