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Multi-scale reliability analysis of composite structures – Application to the Laroin footbridge

Dehmous, Hocine and Welemane, Hélène Multi-scale reliability analysis of composite structures – Application to the Laroin footbridge. (2011) Engineering Failure Analysis, 18 (3). 988-998. ISSN 1350-6307

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.engfailanal.2010.12.005


This work aims at developing a new methodology for the reliability assessment of composite structures and their design optimization. It relies on the coupling of well established methods: homogenization scheme for the mechanical modelling of composite materials and reliability methods to account for their inherent variability. Moreover, such approach is based on an accurate treatment of inherent uncertainties of these mechanical systems at various scales, including microscopic and macroscopic levels, that provides newperspectives for structural design. As an illustration, we propose to apply the multi-scale reliability analysis on the case of the Laroin footbridge (France) with carbon–epoxy stay cables. Since the reliability assessment of such structure is evaluated through the fibre failure, numerical simulations require the coupling of reliability methods, finite element modelling to derive macroscopic loading within cables and micromechanics to estimate the effective elastic properties of composite and local responses within constituents. Results demonstrate the feasibility of the coupled approach at a structure scale and its main interests for the optimization phase of materials and engineering structures.

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 Engineering Failure Analysis website : http://dx.doi.org/10.1016/j.engfailanal.2010.12.005
HAL Id:hal-00758888
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université M'sila (ALGERIA)
Laboratory name:
Laboratoire Génie de Production - LGP (Tarbes, France) - Mécanique des Matériaux des Structures et Procédés
Deposited On:23 Nov 2012 12:18

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