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Title: Modelling complex progressive failure in notched composite laminates with varying sizes and stacking sequences
Authors: Ridha, M.
Wang, C.H.
Chen, B.Y.
Tay, T.E. 
Keywords: B. Damage tolerance
B. Delamination
C. Computational modelling
C. Damage mechanics
Issue Date: Mar-2014
Citation: Ridha, M., Wang, C.H., Chen, B.Y., Tay, T.E. (2014-03). Modelling complex progressive failure in notched composite laminates with varying sizes and stacking sequences. Composites Part A: Applied Science and Manufacturing 58 : 16-23. ScholarBank@NUS Repository.
Abstract: The emergence of advanced computational methods and theoretical models for damage progression in composites has heralded the promise of virtual testing of composite structures with orthotropic lay-ups, complex geometries and multiple material systems. Recent studies have revealed that specimen size and material orthotropy has a major effect on the open hole tension (OHT) strength of composite laminates. The aim of this investigation is develop a progressive failure model for orthotropic composite laminates, employing stepwise discretization of the traction-separation relationship, to predict the effect of specimen size and laminate orthotropy on the OHT strength. The results show that a significant interaction exists between delamination and in-plane damage, so that models without considering delamination would over-predict strength. Furthermore, it is found that the increase in fracture toughness of blocked plies must be incorporated in the model to achieve good correlation with experimental results. © 2013 Elsevier Masson SAS. All rights reserved.
Source Title: Composites Part A: Applied Science and Manufacturing
ISSN: 1359835X
DOI: 10.1016/j.compositesa.2013.11.012
Appears in Collections:Staff Publications

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