Méthode de surface de réponse pour l'optimisation de structures composites multicouches en utilisant les éléments coque-solide

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HAL Id: hal-01492448

https://hal.archives-ouvertes.fr/hal-01492448

Submitted on 20 Mar 2017

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Méthode de surface de réponse pour l’optimisation de structures composites multicouches en utilisant les

éléments coque-solide

Moez Hannachi, Hakim Naceur, Jean-Louis Batoz, Salim Belouettar

To cite this version:

Moez Hannachi, Hakim Naceur, Jean-Louis Batoz, Salim Belouettar. Méthode de surface de réponse pour l’optimisation de structures composites multicouches en utilisant les éléments coque-solide. 8e Colloque national en calcul des structures, CSMA, May 2007, Giens, France. �hal-01492448�

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a Université de Technologie de Compiègne, BP 20529 – 60205 Compiègne, France

b Centre de Recherche public Henri Tudor, 29 Avenue J.F. Kennedy, L-1855, Luxembourg

RÉSUMÉ. Nous présentons dans la première partie de l’article la formulation d'un nouveau modèle E.F. tridimensionnel à huit nœuds de type Coque-Solide baptisé CSH8gZ7, valable pour l’analyse des structures isotropes et composites minces ou épaisses. La deuxième partie du papier traite de l'optimisation des structures stratifiées, où les variables de conception sont les orientations des fibres ou les propriétés du matériau. Pour l’optimisation, une méthode spécifique de construction de surfaces de réponse basée sur l'approximation diffuse est utilisée. Plusieurs applications numériques académiques et industrielles d’optimisation de structures composites multicouches sont conduites pour la validation des modèles.

ABSTRACT. In the first part of the paper we present the general formulation of a new eight- node solid-shell F.E. model called CSH8gZ7 using a 3D formulation, valid for thin or thick isotropic and composite shell structures.,. The second part of the paper deals with the optimization of multilayer composite structures, where design variables are fibers orientations and material parameters. To solve the optimization problem we adopt a specific response surface method based on diffuse approximation. Several numerical investigations are conducted in this study to assess current procedure capabilities applied to academic and industrial cases.

MOTS-CLÉS: éléments finis coque-solide, structures composites multicouches, optimisation.

KEYWORDS: Solid-Shell elements; Multilayer Composite structures; Optimization.

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Méthode de surface de réponse pour l'optimisation de structures composites multicouches en utilisant les éléments coque-solide

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