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Modélisation dynamique avancée des composites à matrice organique (CMO) pour l’étude de la vulnérabilité des structures aéronautiques

Abstract : Nowadays, organic matrix composite materials are widely used in the transportation industry, and particularly in the aeronautical industry. To provide an optimal dimensioning of the structures, it is necessary to study the mechanical behavior of OMC on a large range of strain rates and temperatures. The aim of this PhD thesis is to propose a behavior and a rupture model to predict the mechanical response of OMC for a large range of strain rates and temperatures. The research was initially focused on the characterization of the transition between the linear and nonlinear behavior of the material T700GC/M21, a carbon / epoxy unidirectional laminate as well as the strain rate and temperature dependencies of this transition. The work was then focused on the experimental study of the nonlinear damaged behavior of the T700GC/M21. Finally, completing these first two steps, an updated version of the behavior model available at ONERA (OPFM) was proposed which includes the transition between linear and nonlinear behavior and the influence of strain rate and temperature on the mechanical response of the material.
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https://tel.archives-ouvertes.fr/tel-02061716
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Submitted on : Friday, March 8, 2019 - 12:07:07 PM
Last modification on : Saturday, March 9, 2019 - 1:21:13 AM
Long-term archiving on: : Monday, June 10, 2019 - 4:11:39 PM

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Magali Castres. Modélisation dynamique avancée des composites à matrice organique (CMO) pour l’étude de la vulnérabilité des structures aéronautiques. Mécanique [physics.med-ph]. Ecole Centrale de Lille, 2018. Français. ⟨NNT : 2018ECLI0006⟩. ⟨tel-02061716⟩

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