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.
Original language | English |
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Title of host publication | Proceedings of 22nd International Conference on Composite Materials (ICCM22), Melbourne, AU, August 11-16, 2019 |
Pages | 2336-2342 |
Number of pages | 7 |
Publication status | Published - 2019 |
Event | 22nd International Conference on Composite Materials - Melbourne, Australia Duration: 10 Aug 2019 → 16 Aug 2019 Conference number: 22 |
Conference
Conference | 22nd International Conference on Composite Materials |
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Abbreviated title | ICCM22 2019 |
Country/Territory | Australia |
City | Melbourne |
Period | 10/08/19 → 16/08/19 |
Keywords
- Thermoplastic
- Stiffened Panel
- Buckling
- Collapse