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SIMULATION DU COMPORTEMENT MECANIQUE DES MILIEUX FIBREUX EN GRANDES TRANSFORMATIONS : APPLICATION AUX RENFORTS TRICOTES

Abstract : Modelling fibrous reinforcement involves to take into account, on one hand, a tridimensionnal architecture made of yarns and, on the other hand, their elementary anisotropic behavior that results from a complex microstructure. Our research consists in the development of finite element models able to cope with large deformations in order to obtain the numerical characterization of the behavior of elementary representative cells. This behavior will make it possible to simulate shaping-processes. A geometric model of a structural knit is built in order to set up a consistent 3D finite element model at mesoscopic scale. The hypo-elastic orthotropic behavior is detailed with the aid of the tensorial tool. This allow us to propose a new model: the Fibrous Equivalent Orthotropic Continuum. Lastly, some prospects for Fibrous Equivalent Anisotropic Continua models, where the strong anisotropic directions are non-orthogonal, are developed.
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https://pastel.archives-ouvertes.fr/tel-00007341
Contributor : Benjamin Hagege <>
Submitted on : Monday, November 8, 2004 - 7:33:52 PM
Last modification on : Thursday, March 5, 2020 - 6:49:20 PM
Long-term archiving on: : Friday, April 2, 2010 - 8:42:06 PM

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  • HAL Id : tel-00007341, version 1

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Benjamin Hagege. SIMULATION DU COMPORTEMENT MECANIQUE DES MILIEUX FIBREUX EN GRANDES TRANSFORMATIONS : APPLICATION AUX RENFORTS TRICOTES. Autre. Arts et Métiers ParisTech, 2004. Français. ⟨NNT : 2004ENAM0024⟩. ⟨tel-00007341⟩

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