Paper number 991
|
THE EFFECT OF DELAMINATION GEOMETRY ON THE BUCKLING AND FAILURE OF GFRP PLATES |
G.J. Short[TC1], F.J. Guild and M.J. Pavier
Department of Mechanical Engineering, University of Bristol
University Walk, Bristol, BS8 1TR, U.K.
| Summary | Delaminations in composite laminates can cause a reduction in compressive strength due to buckling of the delaminated plies. The aim of this work is to study the effect of delamination geometry on the compressive behaviour of layered composites using finite element models and closed form solutions with isotropic properties to identify trends in behaviour. These studies were then related to experimental observations in glass fibre reinforced plastic test specimens. Three distinct modes of panel behaviour (delamination buckling, global plate buckling and mixed mode buckling), dependant on delamination geometry, were identified from this isotropic modelling. These trends were correlated with experimental data, which showed this technique to be valid for predicting buckling behaviour in layered composite materials. |
Keywords | Delamination, Buckling, Finite Element Analysis, Failure, Laminates |