Abstract
This paper deals with the nonlinear local response of foam-filled sandwich plates with composite laminated faces subjected to transverse patch load combined with in-plane compressive edge loads. The analysis is carried out by modeling loaded faces as thin laminated plates resting on a two-parameter (Vlasov-type) elastic foundation, from which the shearing interaction between the loaded face and the supporting core-layer are included. An analytical–numerical approach is developed to determine the local bending or postbuckling responses of foam-filled sandwich plates with different sets of boundary conditions. Both local displacement and stress fields are examined. A detailed numerical investigation of the influence played by a number of laminate parameters (fiber orientation, geometric dimensions) and foundation parameters (elastic modular ratio and thickness ratio between face and core layers) as well as the load parameters is performed and pertinent conclusions are outlined.
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