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Experiments on Buckling and Postbuckling of Thin-Walled CFRP Structures using Advanced Measurement Systems

Degenhardt, Richard und Kling, Alexander und Hillger, Wolfgang und Goetting, Hans Christian und Zimmermann, Rolf und Rohwer, Klaus und Gleiter, Andreas (2007) Experiments on Buckling and Postbuckling of Thin-Walled CFRP Structures using Advanced Measurement Systems. International Journal of Structural Stability and Dynamics, 7 (2), Seiten 337-358. DOI: 10.1142/S0219455407002253.

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Kurzfassung

The aircraft and space industry strives for significantly reduced development and operating costs. Reduction of structural weight at safe design is one possibility to reach this objective which is aimed by the following two running research projects: the EC project “COCOMAT” and the ESA study “Probabilistic Aspects of Buckling Knock Down Factors”. These projects develop improved concepts and tools for a fast and reliable simulation of the buckling and the postbuckling behavior of thin-walled structures up to collapse, respectively, which allow the exploitation of considerable reserves in primary fibre composite structures in aerospace applications. For the validation of the concepts and tools, a sound database of experiments is needed which is also performed within these projects. This paper focuses on the experimental activities within these projects performed at the buckling test facility of the Institute of Composite Structures and Adaptive Systems (DLR). It presents an overview about the DLR buckling, postbuckling and collapse tests which are already finished and gives an outlook to the results which are expected until the end of the running projects. This paper explains the working of the buckling test facility, the advanced measurement systems, which are running in parallel to the tests, and gives exemplarily two test results. The structures considered are unstiffened cylinders (ESA study) as well as panels, which are understood as sections of cylinders, stiffened by stringers (COCOMAT project). The unstiffened cylinders are more related to space applications (e.g. Ariane busters or parts of the international space station ISS) and the stiffened panels focus more on aircraft structures (e.g. fuselage). The load case considered for all investigations presented in this paper is axial compression under static loading although the test facility is also ready to apply torsion and internal pressure, as well as dynamic axial impact.

Dokumentart:Zeitschriftenbeitrag
Titel:Experiments on Buckling and Postbuckling of Thin-Walled CFRP Structures using Advanced Measurement Systems
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Degenhardt, RichardNICHT SPEZIFIZIERT
Kling, AlexanderNICHT SPEZIFIZIERT
Hillger, WolfgangNICHT SPEZIFIZIERT
Goetting, Hans ChristianNICHT SPEZIFIZIERT
Zimmermann, RolfNICHT SPEZIFIZIERT
Rohwer, KlausNICHT SPEZIFIZIERT
Gleiter, AndreasUniversität Stuttgart, IKT
Datum:Juni 2007
Erschienen in:International Journal of Structural Stability and Dynamics
Referierte Publikation:Ja
In ISI Web of Science:Ja
Band:7
DOI :10.1142/S0219455407002253
Seitenbereich:Seiten 337-358
Status:veröffentlicht
Stichwörter:Stability, tests, composites structures, buckling, postbuckling, collapse
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Strukturen & Werkstoffe
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Strukturmechanik
Hinterlegt von: Doris Ries
Hinterlegt am:11 Sep 2008
Letzte Änderung:27 Apr 2009 13:52

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