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An analysis methodology for failure in postbuckling skin-stiffener interfaces

Orifici, Adrian und Thomson, R.S. und Herszberg, I. und Weller, T. und Degenhardt, Richard und Bayandor, J. (2007) An analysis methodology for failure in postbuckling skin-stiffener interfaces. Composite Structures, 86, Seiten 186-193. Elsevier Ltd.. DOI: doi:10.1016/j.compstruct.2008.03.023. ISSN 0263-8223.

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Kurzfassung

Blade-stiffened structures have the potential to produce highly efficient structures, particularly when the large strength reserves available after structural buckling, in the postbuckling range, are exploited. In experimental tests of postbuckling stiffened structures made from fibre-reinforced composites, failure typically initiates at the interface of the skin and stiffener and leads to rapid and even explosive failure. A methodology has been developed for analysing collapse in postbuckling composite structures that involves predicting the initiation of interlaminar damage in the skin–stiffener interface. A strength-based criterion is monitored in each ply using a local model of the skin–stiffener interface cross-section. For the analysis of large structures, a global analysis is first run to obtain the complete postbuckling deformation field, which is then input onto a local model using a global–local analysis technique. The coordinates of the local model can easily be moved to rapidly assess failure initiation at numerous skin–stiffener interface locations throughout the global structure. The analysis methodology is compared to experimental results for two-dimensional T-section specimens and large, fuselage-representative stiffened panels and is shown to give accurate predictions of the failure load and failure mechanisms. The use of the approach for the analysis of postbuckling composite structures has application for the design and certification of the next generation of aircraft.

Dokumentart:Zeitschriftenbeitrag
Titel:An analysis methodology for failure in postbuckling skin-stiffener interfaces
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Orifici, AdrianSchool of Aerospace, Mechanical and Manufacturing Engineering, Royal Melbourne Institute of Technology
Thomson, R.S.Cooperative Research Centre for Advanced Composite Structures Limited
Herszberg, I.Cooperative Research Centre for Advanced Composite Structures Limited
Weller, T.Faculty of Aerospace Engineering, Israel Institute of Technology (Technion)
Degenhardt, RichardNICHT SPEZIFIZIERT
Bayandor, J.The Sir Lawrence Wackett Aerospace Centre, School of Aerospace, Mechanical and Manufacturing Engineering, Royal Melbourne Institute of Technology
Datum:2007
Erschienen in:Composite Structures
Referierte Publikation:Ja
In ISI Web of Science:Ja
Band:86
DOI :doi:10.1016/j.compstruct.2008.03.023
Seitenbereich:Seiten 186-193
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Marshall, I.H.NICHT SPEZIFIZIERT
Verlag:Elsevier Ltd.
ISSN:0263-8223
Status:veröffentlicht
Stichwörter:Buckling; Postbuckling; Stiffened panels; Skin–stiffener damage; COCOMAT
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:02 Feb 2009
Letzte Änderung:15 Jan 2010 00:00

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