Banat, D. und Mania, R. und Degenhardt, Richard (2022) Stress state failure analysis of thin-walled GLARE composite members subjected to axial loading in the post-buckling range. Composite Structures, 289. Elsevier. doi: 10.1016/j.compstruct.2022.115468. ISSN 0263-8223.
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Kurzfassung
The paper investigated the load-carrying capacity and the participation of stress components in the failure analysis of top-hat-shaped composite columns subjected to uniform compression. GLARE members were axially compressed in laboratory tests employing a static testing unit. Failure tests were monitored in the full load range using the digital image correlation (DIC) system, which enabled visualization of full-field displacements and strains. Simultaneously, FEM numerical simulations were carried out to estimate the load-carrying capacity of the top-hat-shaped sections based on the nominal stress state in both the non-degraded and degraded composite models. In the latter, the material property degradation method (MPDG) allowed a progressive lowering of the material stiffness based on the presumed damage variables. Failure initiation in composite plies was monitored in FE simulations based on Hashin and Puck failure criteria. Stress state analysis was performed to investigate the participation of stress tensor components in the failure function of selected failure criteria. This enabled the identification of critical stresses contributing to aluminum plastic deformation and intra-laminar failure mechanisms that led to the composite fracture. The results of the numerical simulations were found to be in high agreement with the experimental evidence.
elib-URL des Eintrags: | https://elib.dlr.de/191594/ | ||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||
Titel: | Stress state failure analysis of thin-walled GLARE composite members subjected to axial loading in the post-buckling range | ||||||||||||||||
Autoren: |
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Datum: | März 2022 | ||||||||||||||||
Erschienen in: | Composite Structures | ||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||
Open Access: | Ja | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||
Band: | 289 | ||||||||||||||||
DOI: | 10.1016/j.compstruct.2022.115468 | ||||||||||||||||
Verlag: | Elsevier | ||||||||||||||||
ISSN: | 0263-8223 | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | Thin-walled GLAREStress state analysisPost-bucklingFailure modesProgressive damage | ||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||
HGF - Programmthema: | Forschung unter Weltraumbedingungen | ||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||
DLR - Forschungsgebiet: | R FR - Forschung unter Weltraumbedingungen | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Materialdesign und neue Materialien | ||||||||||||||||
Standort: | Braunschweig | ||||||||||||||||
Institute & Einrichtungen: | Institut für Faserverbundleichtbau und Adaptronik > Strukturmechanik | ||||||||||||||||
Hinterlegt von: | Degenhardt, Prof. Dr. Richard | ||||||||||||||||
Hinterlegt am: | 12 Sep 2023 09:10 | ||||||||||||||||
Letzte Änderung: | 09 Feb 2024 10:00 |
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