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Global buckling of composite plates containing rectangular delaminations using exact stiffness analysis and smearing method

Damghani, Mahdi; Kennedy, David; Featherston, Carol

Authors

David Kennedy

Carol Featherston



Abstract

The global buckling of a composite plate with a single rectangular delamination is studied using a smearing
method and employing exact stiffness analysis and the Wittrick–Williams algorithm. Computational
efficiency is achieved by avoiding discretisation into elements and non-linear analyses, making the
method suitable for parametric studies in preliminary aircraft design. Numerical results for longitudinal
compressive loading show the level of reduction in buckling load with increasing length and width of
delamination. Global buckling strength is increased as the delamination is moved towards the plate surface,
but is relatively insensitive to its widthwise and lengthwise location. The results are validated by
finite element analysis.

Journal Article Type Article
Publication Date Jan 1, 2014
Journal Computers and Structures
Print ISSN 0045-7949
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 134
Pages 32-47
APA6 Citation Damghani, M., Kennedy, D., & Featherston, C. (2014). Global buckling of composite plates containing rectangular delaminations using exact stiffness analysis and smearing method. Computers and Structures, 134, 32-47. https://doi.org/10.1016/j.compstruc.2013.12.005
DOI https://doi.org/10.1016/j.compstruc.2013.12.005
Keywords aerospace structures, composites, buckling, delamination, exact strip, Wittrick–Williams algorithm
Publisher URL http://dx.doi.org/10.1016/j.compstruc.2013.12.005
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