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Reliability analysis and micromechanics: A coupled approach for composite failure prediction

Welemane, Hélène and Dehmous, Hocine Reliability analysis and micromechanics: A coupled approach for composite failure prediction. (2011) International Journal of Mechanical Sciences, vol. 53 (n° 11). pp. 935-945. ISSN 0020-7403

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Official URL: http://dx.doi.org/10.1016/j.ijmecsci.2011.07.001

Abstract

This work aims at associating two classical approaches for the design of composite materials: first, reliability methods that allow to account for the various uncertainties involved in the composite materials behaviour and lead to a rational estimation of their reliability level; on the other hand, micromechanics that derive macroscopic constitutive laws from micromechanical features. Such approach relies on the introduction of variabilities defined at the microscale and on the investigation of their consequences on the material macroscopic response through an homogenization scheme. Precisely, we propose here a systematic treatment of variability which involves a strong link between micro- and macroscales and provides a more exhaustive analysis of the influence of uncertainties. The paper intends to explain the main steps of such coupling and demonstrate its interests for material engineering, especially for constitutive modelling and composite materials optimization. An application case is developed throughout on the failure of unidirectional carbon fibre-reinforced composites with a comparative analysis between experimental data and simulation results.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at International Journal of Mechanical Sciences website : http://www.sciencedirect.com/science/journal/00207403
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Université M'sila (ALGERIA)
Laboratory name:
Laboratoire Génie de Production - LGP (Tarbes, France) - Mécanique des Matériaux, des Structures et Procédés - M2SP
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Deposited By: Helene Welemane

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