Analysis and testing of a thermoplastic composite stiffened panel under compression

Conference Paper (2019)
Author(s)

Kevin van Dooren (TU Delft - Aerospace Structures & Computational Mechanics)

Edgars Labans (TU Delft - Aerospace Structures & Computational Mechanics)

B. H.A.H. Tijs (GKN Aerospace, TU Delft - Aerospace Structures & Computational Mechanics)

C Bisagni (TU Delft - Aerospace Structures & Computational Mechanics)

J. Waleson (GKN Aerospace)

Research Group
Aerospace Structures & Computational Mechanics
Copyright
© 2019 K.S. van Dooren, E. Labans, B.H.A.H. Tijs, C. Bisagni, J. Waleson
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Publication Year
2019
Language
English
Copyright
© 2019 K.S. van Dooren, E. Labans, B.H.A.H. Tijs, C. Bisagni, J. Waleson
Research Group
Aerospace Structures & Computational Mechanics
Pages (from-to)
2336-2342
ISBN (print)
9781925627220
Reuse Rights

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Abstract

This paper presents the numerical analysis of a thermoplastic composite stiffened panel subjected to compression load. The panel has three stringers with a non-symmetric design, with an artificial crack at the middle stringer interface and is made from a fast crystallizing polyetherketoneketone carbon composite. The finite element model includes an approximation of the geometrical imperfections which were measured using a digital image correlation system. The finite element analyses are discussed, where the crack propagation is modelled using the virtual crack closure technique. The results show that crack propagation starts rather early after buckling and the crack growth behaviour is heavily influenced by the buckling shape, which consists of three half-waves in longitudinal direction in each bay.

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