Overall behaviour of shallow singly-curved sandwich panels

Abstract A model for the load-deformation response of a shallow singly-curved sandwich panel is developed on the basis of Reissner plate theory. For arbitrary initial panel geometry and lateral load distribution, the load-deflection relations are derived in the form of two implicit equations. Explicit equations describing the deformation behaviour of symmetric sandwich panels subjected to symmetric loading are also presented. A stability analysis is performed for a simply-supported sandwich panel of constant curvature and loaded by uniform pressure. Structural and buckling parameters which depend on the panel geometry and material properties are introduced. These parameters allow the buckling behaviour of shallow sandwich panels to be predicted. The ideas behind the analysis and the solution technique are illustrated through numerical examples.

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