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matériaux sandwich

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Modélisation numerique et expérimentale du comportement de structures sandwich
Moussa Karama, Bernard Lorrain
Journal:

Mechanics & Industry / Volume 7 / Issue 1 / January 2006

Published online by Cambridge University Press:

10 May 2006, pp. 39-48

Print publication:

January 2006
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Le but de ce travail dans le thème "Modélisation de structures composites" est la modélisation en flexion de structures sandwiches. Les étapes principales de cette étude sont : la détermination des constantes élastiques du matériau par une homogénéisation numérique à l'aide du logiciel "Samcef" ; le développement analytique et l'implémentation dans le logiciel de calcul formel "Mathematica" de modèles raffinés de la flexion 3 et 4 points ; la validation expérimentale des différents modèles développés. Il est important de noter la mise en œuvre de nouveaux moyens de mesure tels que la stéréocorrélation d'images et l'interférométrie laser pour la mesure de déformations, des déplacements et des contraintes.