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Development of a finite element methodology for the propagation of delaminations in composite structures

Orifici, Adrian und Thomson, R.S. und Degenhardt, Richard und Bisagni, C. und Bayandor, J. (2007) Development of a finite element methodology for the propagation of delaminations in composite structures. Mechanics of Composite Materials, 43 (1), Seiten 9-28. Springer New York. DOI: 10.1007/s11029-007-0001-7. ISSN 0191-5665 (Print) 1573-8922 (Online).

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Kurzfassung

Analysing the collapse of skin-stiffened structures requires capturing the critical phenomenon of skin-stiffener separation, which can be considered analogous to interlaminar cracking. This paper presents the development of a numerical approach for simulating the propagation of interlaminar cracks in composite structures. A degradation methodology was introduced in MSC.Marc, which involved the modelling of a structure with shell layers connected by user-defined multiple-point constraints (MPCs). User subroutines were written that employ the virtual crack closure technique (VCCT) to determine the onset of crack growth and modify the properties of the user-defined MPCs to simulate crack propagation. Methodologies for the release of failing MPCs are presented and are discussed with reference to the VCCT assumption of self-similar crack growth. The numerical results obtained by using the release methodologies are then compared with experimental data for a double-cantilever beam specimen. Based on this comparison, recommendations for the future development of the degradation model are made, especially with reference to developing an approach for the collapse analysis of fuselage-representative structures.

Dokumentart:Zeitschriftenbeitrag
Titel:Development of a finite element methodology for the propagation of delaminations in composite structures
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 Ltd
Degenhardt, RichardNICHT SPEZIFIZIERT
Bisagni, C.Dipartimento di Ingegneria Aerospaziale, Politecnico di Milano
Bayandor, J.The Sir Lawrence Wackett Aerospace Centre, Royal Melbourne Institute of Technology
Datum:Januar 2007
Erschienen in:Mechanics of Composite Materials
Referierte Publikation:Ja
In ISI Web of Science:Ja
Band:43
DOI :10.1007/s11029-007-0001-7
Seitenbereich:Seiten 9-28
Verlag:Springer New York
ISSN:0191-5665 (Print) 1573-8922 (Online)
Status:veröffentlicht
Stichwörter:delamination, virtual crack closure technique, double cantilever beam, propagation modelling
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:11 Sep 2008
Letzte Änderung:27 Apr 2009 14:09

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