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A stochastic study on the robustness of a stiffened composite structure

Lee, M. und Thomsen, R. und Degenhardt, Richard und Kelly, D.W. (2008) A stochastic study on the robustness of a stiffened composite structure. In: Proceedings of the 2nd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures. 2nd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures, 2008-09-03 - 2008-09-05, Braunschweig, Deutschland.

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Kurzfassung

COCOMAT is an ongoing four year European Commission project aimed at exploiting the large reserve of strength in composite structures through more accurate prediction of collapse. As part of the research program, curved stiffened composite panels of various designs have been manufactured and tested in compression. In the current pool of experiments it is possible to observe the scatter in results caused by manufacturing defects and material variations. In order to gain more insight into the results, a stochastic framework has been developed where variations are introduced into the finite element analyses and the effects measured. An issue arises as to what the stochastic boundaries should be, and the how this affects the final result. In a bid to understand how the stochastic method can be useful in future analyses a design criterion, robustness, has been used. A qualitative measure of robustness in the form of a Robust Index has been derived so that comparisons between the results achieved can be made.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:A stochastic study on the robustness of a stiffened composite structure
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Lee, M.School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney
Thomsen, R.Cooperative Research Centre for Advanced Composite Structures (CRC-ACS) Limited, Fishermans Bend, VIC 3207, Australia
Degenhardt, RichardNICHT SPEZIFIZIERT
Kelly, D.W.School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Datum:September 2008
Erschienen in:Proceedings of the 2nd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
DLR Braunschweig, NICHT SPEZIFIZIERT
Status:veröffentlicht
Stichwörter:Robust Design, Stochastics, Collapse, Postbuckling, and COCOMAT
Veranstaltungstitel:2nd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures
Veranstaltungsort:Braunschweig, Deutschland
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2008-09-03 - 2008-09-05
Veranstalter :DLR Braunschweig, Institut für Faserverbundleichtbau und Adaptronik
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:09 Sep 2008
Letzte Änderung:27 Apr 2009 15:12

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