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Wolff, Caroline and Wilckens, Dirk (2015) Testing and simulation of impact damaged stiffened CFRP-panels. 3rd Int. Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures, 25.03.2015-27.03.2015, Braunschweig.
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Abstract
In the present contribution, the residual strength behaviour of stiffened CFRP shells under axial compression loading is discussed. In this context, two stiffened CFRP panels are pre-damaged by impact and tested under axial compression until collapse. The panels without damage were tested before in order to obtain a reference result. Two different impact scenarios are investigated on a T- and a J-stringer stiffened panel, respectively. The damaged area is assessed by ultra-sonic (US) inspection. Load shortening data, strains as well as full field displacements are recorded during the test. Additionally to the experiments, the structural behaviour is simulated for the undamaged and damaged structures using the commercial FE-code Abaqus. The US inspection results of the impacted areas are transferred into the FE-models, and the stiffness and strength of affected elements are degraded accordingly. The numerical results are compared to the experimental findings. Through this approach, the influence of both impact scenarios on the structural behaviour of stiffened CFRP shells is assessed by test and simulation.
| Item URL in elib: | https://elib.dlr.de/99009/ | |||||||||
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| Document Type: | Conference or Workshop Item (Speech, Poster) | |||||||||
| Title: | Testing and simulation of impact damaged stiffened CFRP-panels | |||||||||
| Authors: |
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| Date: | March 2015 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Status: | Published | |||||||||
| Keywords: | stiffened panel, buckling, postbuckling, impact, residual strength, NDI-FEM-transfer, test and simulation | |||||||||
| Event Title: | 3rd Int. Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures | |||||||||
| Event Location: | Braunschweig | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 25.03.2015-27.03.2015 | |||||||||
| Organizer: | DLR-Institut für Faserverbundleichtbau und Adaptronik | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Aeronautics | |||||||||
| HGF - Program Themes: | fixed-wing aircraft | |||||||||
| DLR - Research area: | Aeronautics | |||||||||
| DLR - Program: | L AR - Aircraft Research | |||||||||
| DLR - Research theme (Project): | L - Structures and Materials (old) | |||||||||
| Location: | Braunschweig | |||||||||
| Institutes and Institutions: | Institute of Composite Structures and Adaptive Systems > Structural Mechanics | |||||||||
| Deposited By: | Wolff, Caroline | |||||||||
| Deposited On: | 14 Dec 2015 07:58 | |||||||||
| Last Modified: | 14 Dec 2015 07:58 |
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