Dynamic interaction of multiple delaminations and core damage in composite sandwich beams

Description

The paper deals with the nonlinear response of composite sandwich beams subject to static and dynamic out-of-plane loading. The internal structure of composite sandwich systems gives rise to complex damage and failure mechanisms. The objective of the study is to analyse two specific damage mechanisms, namely skin delamination and core crushing, and to investigate how they interact and what are the effects of such interactions on the mechanical behaviour of the system. The study refers to the model system of a sandwich beam that is continuously supported by a rigid plane and subject to a time dependent out-of-plane loading. The problem is studied using the schematic of a multiply delaminated beam on a nonlinear Winkler foundation.

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