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On the role of kinking in the bearing failure of composite laminates

Sola, Cyril and Castanié, Bruno and Michel, Laurent and Lachaud, Frédéric and Delabie, Arnaud and Mermoz, Emmanuel On the role of kinking in the bearing failure of composite laminates. (2016) Composite Structures, 141. 184-193. ISSN 0263-8223

(Document in English)

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Official URL: https://doi.org/10.1016/j.compstruct.2016.01.058


Fibre kinking is one of the main failure modes of composite laminates under compression loading. In this paper, the role of kinking in the failure of quasi-isotropic composites subjected to a bearing load is investigated. High-resolution CT scans show that kinking is largely involved in the events leading to laminate collapse, notably by triggering other damage modes such as delamination. Kink bands develop extremely progressively, leading to the formation of a wide localization zone (or FPZ, failure process zone). Such behaviour calls for a non-local modelling approach. Local damage models would lead to overly conservative sizing. A simple model, based on Hashin failure criteria and non-local effective stresses is confronted to experiments, and its limits are highlighted. It will be shown that proper modelling of the bearing failure requires the characteristic behaviour of kink bands to be taken into account.

Item Type:Article
HAL Id:hal-02163496
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Aéroport International de Marseille-Provence (FRANCE)
Laboratory name:
Deposited On:24 Jun 2019 11:12

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