Enhanced cohesive zone model to predict delamination behavior of carbon/epoxy laminated curved beams

This paper proposes an enhanced Cohesive Zone Model (CZM) for the prediction of delamination in curved beams of epoxy carbon laminates. This model improves the conventional CZM, taking into account the fiber-bridging phenomenon and the variation of the element size among the thickness in the curved...

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Bibliographic Details
Published inMechanics of advanced materials and structures Vol. 29; no. 3; pp. 331 - 341
Main Authors Ranz, David, Cuartero, Jesús, Castejón, Luis, Miralbes, Ramón, Valladares, David
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 14.02.2022
Taylor & Francis Ltd
Subjects
Cohesive elements
Curved beams
Delamination
fiber-bridging
four-point-bending
interlaminar tensile strength
laminated curved beam
Laminates
Mathematical models
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Summary:This paper proposes an enhanced Cohesive Zone Model (CZM) for the prediction of delamination in curved beams of epoxy carbon laminates. This model improves the conventional CZM, taking into account the fiber-bridging phenomenon and the variation of the element size among the thickness in the curved zone. The advantages of the enhanced model are underlined when results obtained from the numerical simulations of a four-point-bending test in compliance with ASTM D6415 standard are compared with the corresponding experimental results. The prediction of the post-failure behavior obtained with this model is closer to that obtained experimentally than with the conventional model.
ISSN:1537-6494
1537-6532
1537-6532
DOI:10.1080/15376494.2020.1769232