Sandwich Constructions 2
(Eds. D.Weissman-Berman, K.A.Olsson),
pp. 161-185, 1992
A. Starlinger and F.G.Rammerstorfer
Institute of Lightweight Structures and Aerospace
TU Wien, Vienna, Austria
Based on a sandwich sell theory assuming an antiplane core, finite element
algorithms are derived by applying the 3D-degeneration technique.
Buckling of the face layers (i.e. wrinkling) and intracell buckling
are taken into account in the analysis of local instability phenomena in
For core materials that are orthotropic, the ciritical load inducing local
buckling of the face layers is determined.
In the case of local failure, the stiffness matrices of the shell element
Changes in the core thickness induced by the curvature in case of loading
(similar to the Brazier effect) are also calculated, and result in a
further modification of the stiffness terms.
Some typical examples and experimental verifications show the applicability
of the finite element formulation presented here.