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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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Liu, Yinong
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 2022Pullout behaviour of shape memory alloy fibres in self-compacting concrete and its relation to fibre surface microtopography in comparison to steel fibrescitations
- 2019Nonuniform transformation behaviour of NiTi in a discrete geometrical gradient designcitations
- 2019Modelling and experimental investigation of geometrically graded shape memory alloys with parallel design configurationcitations
- 2018Effect of thermal annealing on stress relaxation and crystallisation of ion beam sputtered amorphous Si1-xGex thin filmscitations
- 2017Functionally graded shape memory alloyscitations
- 2017Experiments on deformation behaviour of functionally graded NiTi structurescitations
- 2016Investigation of Thermal Expansion Effects on Si-Based MEMS Structurescitations
- 2014Pseudoelastic behaviour of perforated NiTi shape memory plates under tensioncitations
- 2013Finite element computational modelling and experimental investigation of perforated NiTi plates under tensioncitations
- 2013Hystoelastic deformation behaviour of geometrically graded NiTi shape memory alloyscitations
- 2012Mechanical behaviour of architectured NiTi materials in complex loading
- 2011Assessment of tension-compression asymmetry of NiTi using circular bulge testing of thin platescitations
- 2011Modélisation numérique EF du comportement mécanique superélastique de plaques fines planes trouées en NiTi
- 2011Thermally induced damages of PECVD SiNx thin filmscitations
- 2011Etude expérimentale du comportement d'une tôle perforée aléatoirement en NiTi superélastique
- 2009Roundrobin SMA modelingcitations
- 2009Elastohysteresis : un modèle 3D phénoménologique précis pour le comportement superélastique d’Alliage à Mémoire de Forme sous chargements complexes
- 2008Gradient anneal of functionally graded NiTicitations
- 2008Effect of annealing on deformation-induced martensite stabilisation of NiTicitations
- 2008Effect of pseudoelastic cycling on the Clausius-Clapeyron relation for stress-induced martensitic transformation in NiTicitations
- 2007Poisson's Ratio of Low-Temperature PECVD Silicon Nitride Thin Filmscitations
- 2007Design of functionally graded NiTi by heat treatmentcitations
- 2007Process condition dependence of mechanical and physical properties of silicon nitride thin filmscitations
- 2006Hysteretic Behaviour of Ferroelasticity of NiTi in Shearcitations
- 2006Thermal Stability of PECVD SiN/sub x/ Filmscitations
- 2006Influence of Thermomechanical Processing on the Superelastic Properties of a Ni-Rich Nitinol Shape Memory Alloycitations
- 2006Effect of oxidation on the chemical bonding structure of PECVD SiN thin filmscitations
- 2005Characterization of Mechanical Properties of Silicon Nitride Thin Films for MEMS Devices by Nanoindentation
- 2005Effects of deposition temperature on the mechanical and physical properties of silicon nitride thin filmscitations
- 2005On the origin of Luders-like deformation of NiTi shape memory alloyscitations
- 2005Determination of mechanical properties of PECVD silicon nitride thin films for tunable MEMS Fabry-Perot optical filterscitations
- 2005Thermal processing of polycrystalline NiTi shape memory alloyscitations
- 2004Mechanistic simulation of thermomechanical behaviour of thermoelastic martensitic transformations in polycrystalline shape memory alloyscitations
- 2004Hysteretic behaviour of a Cu-Zn-Al single crystal during superelastic shear deformationcitations
- 2004Evaluation Of Elastic Modulus And Stress Gradient Of PECVD Silicon Nitride Thin Films
Places of action
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document
Modélisation numérique EF du comportement mécanique superélastique de plaques fines planes trouées en NiTi
Abstract
Ce travail présente une étude numérique du comportement de plaques superélastiques trouées en AMF NiTi quasi-équiatomique, sollicitées en traction. La simulation utilise le mod`ele d’élasto-hystérésis et le code EF Herezh++. L’AMF se déforme au travers d’une transformation martensitique A⇔M induite mécaniquement, présentant alors un comportement remarquable super-élastique. Il est montré qu’un accroissement de la porosité (représenté par la fraction volumique de trous) conduit à une diminution des modules élastiques apparents avant et après les plateaux de transformation, ainsi qu’à une diminution de l’amplitude d’hystérésis et de la contrainte nominale de transformation A⇔M et une augmentation de la déformation de transformation. Par exemple, la déformation de transformation augmente d’environ 25% en introduisant 32% de porosité. Pour des déformations globales modérées de<br/>l’ordre de celles du plateau (1`a 6%), on observe une répartition de déformation beaucoup plus homogène dans le cas du NiTi comparé à l’acier qui présente une réponse fortement localisée.<br/><br/>Abstract :<br/>This study presents a computational study for deformation behaviour of nearequiatomic NiTi holey plates loading in tension. Simulations use the elasto-hysteresis model and the academic software Herezh++. Near-equiatomic NiTi alloy deforms via stress-induced A⇔M martensitic transformation,<br/>which exhibits a typical hystoelastic mechanical behaviour over a stress plateau, known as the pseudoelasticity. It is found that, with increasing the level of porosity (area fraction of holes), the apparent elastic modulus before and after the stress plateau decrease, the nominal stresses for the A⇔M transformation decrease and the strain increases, and the pseudoelastic stress hysteresis decreases. In particular, the transformation strain increases by about 25% by introducing 32% porosity. Upon moderate globale deformations (range 1 to 6%), the strain in a holey plate made of NiTi is more uniformly distributed than in a same plate made of steel that shows an answer very localised.<br/>