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Degradation investigation in a postbuckling composite stiffened fuselage panel

Orifici, Adrian und Thomson, R.S. und Degenhardt, Richard und Kling, Alexander und Rohwer, Klaus und Bayandor, J. (2005) Degradation investigation in a postbuckling composite stiffened fuselage panel. 13. International Conference of Composite Structures, 2005-11-14 - 2005-11-16, Melbourne, Australien.

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Kurzfassung

The European Commission Project COCOMAT (Improved MATerial Exploitation at Safe Design of COmposite Airframe Structures by Accurate Simulation of COllapse) is a currently running four-year project that aims to exploit the large strength reserves of composite structures through a more accurate prediction of collapse. Accordingly, one of the COCOMAT work packages involves the design of test panels with a focus on investigating the progression of composite damage mechanisms. This paper presents the collaborative results of some of the partners for this task. Different design alternatives were investigated for fuselage-representative test panels. Non-linear structural analyses were performed using MSC.Nastran (Nastran) and ABAQUS/Standard (Abaqus). Numerical predictions were also made applying a stress-based adhesive degradation model, previously implemented into a material user subroutine for Abaqus. Following this, a fracture mechanics analysis using Nastran was performed along all interfaces between the skin and stiffeners, to examine the stiffener disbonding behaviour of each design. On the basis of the structural and fracture mechanics analyses, a design was selected as being the most suitable for the experimental investigation within COCOMAT. Though the COCOMAT panels have yet to be manufactured and tested, experimental data on the structural performance and damage mechanisms were available from a separate project for a panel identical to the selected design. This data was compared to the structural, degradation and fracture mechanics predictions made using non-linear finite element solutions, and the application of the design within the COCOMAT project was discussed.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Degradation investigation in a postbuckling composite stiffened fuselage panel
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Orifici, AdrianSchool of Aerospace, Mechanical & Manufacturing Engineering, Royal Melbourne Institute of Technology,
Thomson, R.S.Cooperative Research Centre for Advanced Composite Structures Limited
Degenhardt, RichardNICHT SPEZIFIZIERT
Kling, AlexanderNICHT SPEZIFIZIERT
Rohwer, KlausNICHT SPEZIFIZIERT
Bayandor, J.Sir Lawrence Wackett Centre for Aerospace Design Technology, Royal Melbourne
Datum:November 2005
Stichwörter: Composite, postbuckling stiffened panels, skin-stiffener disbonding, COCOMAT
Veranstaltungstitel:13. International Conference of Composite Structures
Veranstaltungsort:Melbourne, Australien
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2005-11-14 - 2005-11-16
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:08 Aug 2007
Letzte Änderung:27 Apr 2009 14:13

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