Abstract
The reliable simulation of the mechanical behaviour of structures made of composite materials has become more and more important. For the prediction of the behaviour up to collapse, initiation and propagation of failure have to be taken into account. In stiffened laminated fibre-reinforced composite structures, a common failure type is delamination. As it is critical for the load-carrying capacity of the structure, especially delaminations between stringer foot and skin in thin-walled stiffened structures have to be taken into account.
In this paper, the results of Pull-off tests on specimens representing a strip of a stiffened composite panel are presented. They were carried out in order to investigate failure load and failure mode of skin-stiffener separation. Furthermore a tool is presented, that uses an element consisting of two shells connected by an adhesive layer. A degradation model is implemented into the adhesive layer that accounts for failure by introducing a damage parameter, that reduces the stiffness of the adhesive layer gradually up to complete decohesion. This tool is applied to simulate the Pull-off tests, and the results are compared to those of the experiments.
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© 2009 Springer Science+Business Media B.V
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Reimerdes, H.G., Büsing, S. (2009). Investigation of Failure and Failure Progression in Stiffened Composite Structures. In: Pantelakis, S., Rodopoulos, C. (eds) Engineering Against Fracture. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9402-6_13
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DOI: https://doi.org/10.1007/978-1-4020-9402-6_13
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-9401-9
Online ISBN: 978-1-4020-9402-6
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