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Contribution à l'étude de la durabilité des structures collées soumises à des efforts mécaniques après vieillissement humide.

Abstract : The study presented in this manuscript deals with the durability of bonded joints in warm and humid environment. The aim of this work was to build a numerical tool able to predict the mechanical behaviour of aged bonded joints to validate their design. In order to achieve this, an important experimental study is carried out on an epoxy filled with elastomer adhesive and steel/epoxy/steel single lap joints intended for the automotive industry. A physically justified non linear diffusion model able to predict the ingress of water and relative stress and strain in the bulk adhesive, and a coupled thermohydro- mechanical behaviour law for the bulk adhesive have been built on the basis of these experimental results. These laws have been integrated in a finite element model able to create a tensile/shear load on the bonded joint before or after aging. The effect of aging on adhesive and/or interface in the assembly is then discussed to improve the understanding of experiments.
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https://tel.archives-ouvertes.fr/tel-00518367
Contributor : Bénédicte Carouge <>
Submitted on : Friday, September 17, 2010 - 10:07:35 AM
Last modification on : Wednesday, February 12, 2020 - 10:00:08 AM
Long-term archiving on: : Saturday, December 18, 2010 - 2:56:54 AM

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  • HAL Id : tel-00518367, version 1

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Romain Léger. Contribution à l'étude de la durabilité des structures collées soumises à des efforts mécaniques après vieillissement humide.. Sciences de l'ingénieur [physics]. ISAE-ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechique - Poitiers, 2010. Français. ⟨tel-00518367⟩

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