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Application of generalised beam theory to the study of the stability behaviour of laminated CFRP cylindrical stiffened panels

Silva, N.M. und Degenhardt, Richard und Camotim, D. und Silvestre, N. (2008) Application of generalised beam theory to the study of the stability behaviour of laminated CFRP cylindrical stiffened panels. 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

The paper presents the application of a novel fast numerical tool, based on Generalised Beam Theory (GBT), to perform buckling and post-buckling analyses of laminated CFRP panels. GBT is a beam theory developed for prismatic thinwalled members (e.g., columns, beams or panels), which takes into account both global and local deformations. One of its main features is the fact that the cross-section is discretised into deformation modes with clear mechanical meanings (e.g., global bending, distortional, local-plate, shear and transverse extension deformation modes) − this (i) allows for a better understanding of the member structural behaviour and (ii) makes it possible to perform analyses with very few d.o.f. (by preselecting a set of deformation modes). No stiffness degradation is taken into consideration and the material is deemed linear elastic and orthotropic. One presents numerical results concerning the local buckling and post-buckling behaviour of stiffened CFRP cylindrical panels, including one that was experimental and numerically investigated in the context of the COCOMAT project. The panel deformed configurations and buckling loads obtained with GBT are validated through the comparison with either experimental data or values yielded by shell finite element analyses carried out in the code ABAQUS.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Application of generalised beam theory to the study of the stability behaviour of laminated CFRP cylindrical stiffened panels
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Silva, N.M.Department of Civil Engineering and Architecture, ICIST/IST, Technical University of Lisbon
Degenhardt, RichardNICHT SPEZIFIZIERT
Camotim, D.Department of Civil Engineering and Architecture, ICIST/IST, Technical University of Lisbon
Silvestre, N.Department of Civil Engineering and Architecture, ICIST/IST, Technical University of Lisbon
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:generalised beam theory, local buckling and post-buckling, laminated CFRP panels
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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