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<dc:title xml:lang="fr">Optimisation multi-échelles par intelligence artificielle des propriétés mécaniques et piézo-électriques d’un nanocomposite utilisé pour fabriquer un contrôleur actif aéronautique</dc:title>
<dcterms:alternative xml:lang="en">Multi-scale modeling and optimization by artificial intelligence of piezoelectrical and mechanical properties of a nonocomposite aimed to be used as an aircraft actuator</dcterms:alternative>
<dc:subject xml:lang="fr">PVDF</dc:subject>
<dc:subject xml:lang="fr">GnR</dc:subject>
<dc:subject xml:lang="fr">PZT-5A</dc:subject>
<dc:subject xml:lang="fr">Piézoélectricité</dc:subject>
<dc:subject xml:lang="fr">Homogénéisation</dc:subject>
<dc:subject xml:lang="fr">Mori–Tanaka</dc:subject>
<dc:subject xml:lang="fr">Actionneur bimorphe</dc:subject>
<dc:subject xml:lang="fr">Optimisation MOGA</dc:subject>
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<dc:subject xml:lang="en">Piezoelectricity</dc:subject>
<dc:subject xml:lang="en">Homogenization</dc:subject>
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<dc:subject xml:lang="en">Bimorph actuator</dc:subject>
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<dcterms:abstract xml:lang="fr">Cette thèse s’inscrit dans le cadre du projet ANR EMBIA, visant à concevoir une peau électroactive innovante pour les ailes d’avion, capable de réduire la consommation de carburant au décollage. Le composite développé associe une matrice de PVDF à des nanorubans de graphène (GnR) et au zirconate-titanate de plomb (PZT-5A). Le modèle micromécanique de Mori–Tanaka et des simulations éléments finis sous ABAQUS ont permis d’évaluer les propriétés électroélastiques et viscoélectroélastiques. Les résultats montrent que le renfort PZT-5A améliore les performances. L’optimisation d’un actuateur bimorphe PVDF/GnR/PZT-5A par algorithme génétique multi-objectifs (MOGA) a permis d’identifier des compromis géométriques et matériels adaptés aux exigences aéronautiques.</dcterms:abstract>
<dcterms:abstract xml:lang="en">This thesis is part of the ANR EMBIA project, which aims to develop an innovative electroactive skin for aircraft wings to reduce fuel consumption during takeoff. The designed composite combines a polyvinylidene fluoride (PVDF) matrix reinforced with graphene nanoribbons (GnR) and lead zirconate titanate (PZT-5A), a high-performance piezoelectric ceramic. A micromechanical approach based on the Mori–Tanaka model, complemented by finite element simulations in ABAQUS, was used to evaluate the electroelastic and viscoelectroelastic properties. Results show that GnR alone is insufficient, while PZT-5A reinforcement significantly enhances performance. The modeling and multi-objective optimization of a bimorph actuator made of PVDF/GnR/PZT-5A using a genetic algorithm (MOGA) identified optimal material and geometric configurations suited for advanced aeronautical applications.</dcterms:abstract>
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