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Motta, Antonella |
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Roche, Emilie
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article
Modeling and definition of a statistically representative cell element. Application to a unidirectional short-fiber composite
Abstract
Obtaining the effective properties of a composite material needs the use or more or less sophisticated models. If a full field method allows validating, even calibrating, mean field approaches, such a calibration can be pertinent only if the full field model is representative of the material behavior. The work presented in this article concerns the compromise to find between the considered microstructure size and its representability. First, a statistically representative cells element (SRCE) of a unidirectional short-fiber composite is defined. In order to do this, the geometrical and morphological parameters, and the mechanical properties of over 180 different cells are compared and analyzed. In the form of an experimental plan, the geometrical and morphological data feed a 3D modeler which supports a mesh that is adapted to the microstructure. © Lavoisier 2016.