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Continuum damage analysis of delamination in composite laminates using a stress-based layerwise plate model

Abstract : This contribution addresses the modelling of delamination in a stress-based layerwise plate model. Such models benefit from a good representation of the local 3D stress field, especially inter-laminar stresses which are natural generalized stress unknowns arising in their derivation. We extend their construction to situations involving onset and propagation of interfacial delamination. We propose a variational formulation relying on a continuous damage description of the opening and sliding interfacial degradation processes using two damage variables. A mixed-mode delamination propagation criterion can be obtained through proper coupling between both variables. Finally, the model predictions are validated against classical delamination tests in pure and mixed modes.
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https://hal-enpc.archives-ouvertes.fr/hal-03639729
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Soumis le : mercredi 13 avril 2022 - 09:20:41
Dernière modification le : mardi 10 mai 2022 - 15:49:24
Archivage à long terme le : : jeudi 14 juillet 2022 - 18:16:26

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Paul Bouteiller, Jeremy Bleyer, Karam Sab. Continuum damage analysis of delamination in composite laminates using a stress-based layerwise plate model. International Journal of Solids and Structures, Elsevier, 2022, pp.111611. ⟨10.1016/j.ijsolstr.2022.111611⟩. ⟨hal-03639729⟩

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