Franzoni, Felipe and Odermann, Falk and Lanbans, Edgars and Bisagni, Chiara and Arbelo, Mariano Andrés and Degenhardt, Richard (2019) Experimental validation of the vibration correlation technique robustness to predict buckling of unstiffened composite cylindrical shells. Composite Structures, 224, p. 111107. Elsevier. doi: 10.1016/j.compstruct.2019.111107. ISSN 0263-8223.
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Official URL: http://www.sciencedirect.com/science/article/pii/S0263822319305574
Abstract
Considering the design of aerospace structures, an experimental campaign is essential for validating the sizing methodology and margins of safety. Particularly for buckling-critical cylindrical shells, the traditional buckling test could lead the specimen to permanent damage. Therefore, the validation of nondestructive experimental procedures for estimating the buckling load of imperfection-sensitive structures from the prebuckling stage is receiving more attention from the industry. In this context, this paper proposes an experimental verification of the robustness of a vibration correlation technique developed for imperfection-sensitive structures. The study comprises three nominally identical unstiffened composite laminated cylindrical shells. Each specimen is tested 10 times for buckling at DLR and, the reproducible results — within a small range of deviation between them — corroborate the equivalence of the cylinders. For the robustness assessment of the vibration correlation technique, two different buckling test facilities are considered. Furthermore, the material properties are recalculated through composite composition rules and the influence of enhanced theoretical buckling loads on the VCT predictions is verified. The experimental campaigns corroborate that the vibration correlation technique provides appropriate estimations representing the influence of the different test facilities; moreover, enhanced theoretical buckling loads can improve the predictions for some of the test cases.
Item URL in elib: | https://elib.dlr.de/127845/ | |||||||||||||||||||||
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Document Type: | Article | |||||||||||||||||||||
Title: | Experimental validation of the vibration correlation technique robustness to predict buckling of unstiffened composite cylindrical shells | |||||||||||||||||||||
Authors: |
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Date: | September 2019 | |||||||||||||||||||||
Journal or Publication Title: | Composite Structures | |||||||||||||||||||||
Refereed publication: | Yes | |||||||||||||||||||||
Open Access: | No | |||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||
In SCOPUS: | Yes | |||||||||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||||||||
Volume: | 224 | |||||||||||||||||||||
DOI : | 10.1016/j.compstruct.2019.111107 | |||||||||||||||||||||
Page Range: | p. 111107 | |||||||||||||||||||||
Publisher: | Elsevier | |||||||||||||||||||||
ISSN: | 0263-8223 | |||||||||||||||||||||
Status: | Published | |||||||||||||||||||||
Keywords: | Nondestructive experiments, Vibration Correlation Technique, Unstiffened composite laminated cylindrical shells, Buckling, Imperfection-sensitive structures | |||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||||||||
HGF - Program: | Space | |||||||||||||||||||||
HGF - Program Themes: | other | |||||||||||||||||||||
DLR - Research area: | Raumfahrt | |||||||||||||||||||||
DLR - Program: | R - no assignment | |||||||||||||||||||||
DLR - Research theme (Project): | R - no assignment | |||||||||||||||||||||
Location: | Braunschweig | |||||||||||||||||||||
Institutes and Institutions: | Institute of Composite Structures and Adaptive Systems > Structural Mechanics | |||||||||||||||||||||
Deposited By: | Franzoni, Felipe | |||||||||||||||||||||
Deposited On: | 21 Jun 2019 09:51 | |||||||||||||||||||||
Last Modified: | 21 Jun 2019 09:51 |
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