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    Rights statement: This is the author’s version of a work that was accepted for publication in Composites Part B Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Part B Engineering. 102, 2016 DOI: 10.1016/j.compositesb.2016.07.004

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    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

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A DEM model for visualising damage evolution and predicting failure envelope of composite laminae under biaxial loads

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>1/10/2016
<mark>Journal</mark>Composites Part B: Engineering
Volume102
Number of pages20
Pages (from-to)9-28
Publication statusPublished
Early online date7/07/16
Original languageEnglish

Abstract

A two dimensional particle model based on the discrete element method (DEM) is developed for micromechanical modelling of fibre reinforced polymer (FRP) composite laminae under biaxial transverse loads. Random fibre distribution within a representative volume element (RVE) is considered for the micromechanical DEM simulations. In addition to predicting the stress-strain curves of the RVEs subjected to transverse compression and transverse shear stresses against the experimental testing results and other numerical modelling results, the DEM model is also able to capture the initiation and propagation of all micro damage events. Fibre distribution is found to more significantly influence the ultimate failure of composite laminae under transverse shear, while it has much less effect on the failure under transverse compression. The failure envelope of composite laminae under biaxial transverse compression and transverse shear is predicted and compared with Hashin and Puck failure criteria, showing a reasonable agreement. The predicted failure envelope is correlated with the damage evolution and the quantitative analysis of failure events, which improves the understanding of the failure mechanisms.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Composites Part B Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Part B Engineering. 102, 2016 DOI: 10.1016/j.compositesb.2016.07.004