Apport de la modélisation multiphasique à l’analyse du comportement macroscopique de matériaux renforcés par fibres

Abstract : A multiphase model has been recently developed and integrated into a finite element based code for the analysis and design of soil structures reinforced with linear inclusions. This approach is extended to account for the macroscopic behavior of fiber reinforced materials such as plaster, concrete fiber, soil reinforced by short fibers and bone tissues, which are constituted of a matrix and a distribution of continuously oriented fibers. The proposed model is performed to evaluate the elastic macroscopic stiffness of the composite material, the obtained results are compared to those deriving from the dilute and Mori-Tanaka estimations. The model is then extended to take into account a nonelastic behavior of the constituents. Starting from the derivation of some analytical solutions to boundary value problems involving fiber reinforced materials in the context of elasto-plastic and brittle behavior of the matrix and fibers, a f.e.m.-based code is developed and applied to simulating the behavior of some typical structures
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van Tuan Nguyen. Apport de la modélisation multiphasique à l’analyse du comportement macroscopique de matériaux renforcés par fibres. Autre. Université Paris-Est, 2013. Français. ⟨NNT : 2013PEST1034⟩. ⟨pastel-00977358⟩

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