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Theses

Vers un matériau virtuel pour l’optimisation qualitative d’une nouvelle famille de CMCs

Abstract : The thesis work focus on the development of a virtual material for heterogeneous materials simulation and optimization, especially in the case of now generation of ceramic-matrix composites. To do that, a model at the scale of the yarn is built up, by using an integrated approach that account for the complexity of the microstructure and its variability arising from the manufacturing process. This approach is made of two steps: i) the construction of a synthetic yarn, using micrographics studies and ii) a multiscale approach based on the generalized finites elements method. The originality of that method come from the use of pattern, sort of typical physical or topological situation, that describe both the local structure and kinematic. The approach is validated and applied to various 2D cross-sections of synthetic yarns, for which the choice of patterns is discussed. Extension to 3D section of the yarn, together with the simulation of the fracture in a discrete manner, is discussed and first elements of answer are proposed.
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Submitted on : Thursday, November 15, 2012 - 2:37:22 PM
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  • HAL Id : tel-00752336, version 1

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Bastien Tranquart. Vers un matériau virtuel pour l’optimisation qualitative d’une nouvelle famille de CMCs. Autre. École normale supérieure de Cachan - ENS Cachan, 2012. Français. ⟨NNT : 2012DENS0014⟩. ⟨tel-00752336⟩

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