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A novel semi-analytical approach for predicting the buckling and postbuckling behaviour of Glare fibre metal laminates by Ahmad S.M. Al-Azzawi; John McCrory; Zhangming Wu; Carol A. Featherston is a Engineering article available to read on EtoBox.

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A semi-analytical model based on the variational principle, the Rayleigh–Ritz method and the Ramberg–Osgood formula is developed to analyse the buckling and postbuckling analysis of Glare® fibre-metal laminates (FMLs) under axial compression. The model is applied to examine the failure behaviour of standard Glare® 4B specimens. It allows computational efficient modelling of composite plates under pure or mixed stress boundary conditions with geometric imperfections, which have been shown to cause a considerable effect on their buckling and postbuckling behaviour. It is implemented in MATLAB. Results are compared with those obtained from a 3D Finite Element (FE) explicit dynamic nonlinear analysis implemented in the Abaqus/Explicit solver. The FE model incorporates progressive damage and failure using a cohesive zone model for inter-laminar layers and continuum material damage models for constituents, considering both geometric imperfections and load eccentricity. Finally, a series of specimens under compression loading are tested for the purpose of validation. Tests are monitored using Digital Image Correlation (DIC) for the determination and visualisation of principal strains, and

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Author

Ahmad S.M. Al-Azzawi; John McCrory; Zhangming Wu; Carol A. Featherston

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)