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A study of mixed-mode composite delamination using enriched interface elements

Published online by Cambridge University Press:  27 January 2016

I. Guiamatsia*
Affiliation:
School of Civil Engineering, The University of Sydney, Sydney, Australia
J. K. Ankersen
Affiliation:
Department of Aeronautics, Imperial College London, London, UK
L. Iannucci
Affiliation:
Department of Aeronautics, Imperial College London, London, UK

Abstract

This paper examines the performance of enriching the shape functions of interface finite elements in the prediction of mixed-mode delamination. Enriching second-order interface and solid elements with the analytical solution of a beam on elastic foundation problem yields the correct displacement field ahead of the crack tip. Despite the enrichment being fixed at elements nodes, resulting in non-traceability of the crack tip location, the strategy is shown to perform consistently well, increasing the minimum element size from the typical 0·5mm to 5mm, for a range of classical mixed-mode bending (MMB) specimens.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 2013 

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