Print Email Facebook Twitter A separable cohesive element for modelling coupled failure in laminated composite materials Title A separable cohesive element for modelling coupled failure in laminated composite materials Author Lu, X. (National University of Singapore) Chen, B. Y. (TU Delft Aerospace Structures & Computational Mechanics) Tan, V. B.C. (National University of Singapore) Tay, T. E. (National University of Singapore) Date 2018 Abstract A three-dimensional separable cohesive element (SCE) is proposed to enable the modelling of interaction between matrix cracking and interfacial delamination in laminated fibre-reinforced composite materials. It is demonstrated that traditional cohesive elements are incapable of modelling the coupled failure mechanisms accurately if partitioning is not allowed. The SCE may be partitioned according to the configuration and geometry of matrix cracks in adjacent plies, thus maintaining appropriate connection between plies. Physically, the original interface is split and new interfaces are formed to bond the homologous cracked solids during fracturing process. The stress concentration induced by matrix cracks and the load transfer from cracked solid elements to interface cohesive element are effectively modelled. A comprehensive set of cases of multiple matrix crack configurations from plies of different fiber angles is considered. The proposed SCE is applied to model progressive failure in composite laminates and the results are found to agree with experiments. Subject A. FractureB. Computational modellingC. LaminatesD. Floating node method To reference this document use: http://resolver.tudelft.nl/uuid:538d8891-388b-4c09-8e8f-45c1b6a3fabc DOI https://doi.org/10.1016/j.compositesa.2018.01.014 Embargo date 2021-12-17 ISSN 1359-835X Source Composites Part A: Applied Science and Manufacturing, 107, 387-398 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 X. Lu, B. Y. Chen, V. B.C. Tan, T. E. Tay Files PDF 1_s2.0_S1359835X18300149_main_1.pdf 1.68 MB Close viewer /islandora/object/uuid:538d8891-388b-4c09-8e8f-45c1b6a3fabc/datastream/OBJ/view