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Effects of moisture-dependent properties of constituents on the hygroscopic stresses in composite structures

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Mechanics of Composite Materials Aims and scope

The effects related to the evolution of the moisture-dependent hygroelastic properties of composite plies constituting a fiber-reinforced epoxy laminate on the predicted stress states in the structure during the transient stage of hygroscopic loading are investigated. The approach proposed involves the coupling of the classical continuum mechanics formalism to the Eshelby–Kröner self-consistent scale transition model. An inverse scale transition model is used to describe the evolution of local hygroelastic properties of the epoxy matrix as the process of moisture diffusion proceeds. The scale transition relations allow one to determine the local distribution of stresses in the constituents (fiber and matrix) of each ply of the laminates considered from the distribution of macroscopic stresses. Numerical simulations show that the account (or not) of softening of the composite structure under hygroscopic loadings significantly affects the multiscale stress states predicted.

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Authors and Affiliations

  1. Institut de Recherche en Génie Civil et Mécanique (UMR CNRS 6183), Université de Nantes, Ecole Centrale de Nantes, Saint-Nazaire, France

    G. Youssef, S. Fréour & F. Jacquemin

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  1. G. Youssef
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  2. S. Fréour
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  3. F. Jacquemin
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Russian translation in Mekhanika Kompozitnykh Materialov, Vol. 45, No. 4, pp. 539–554, July–August, 2009.

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Youssef, G., Fréour, S. & Jacquemin, F. Effects of moisture-dependent properties of constituents on the hygroscopic stresses in composite structures. Mech Compos Mater 45, 369–380 (2009). https://doi.org/10.1007/s11029-009-9098-1

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  • DOI: https://doi.org/10.1007/s11029-009-9098-1

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