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TESTING AND ANALYIS OF POST-BUCKLING BEHAVIOUR OF ANISOGRID PREPREG PANEL UNDER COMPRESSION

Niemann, Steffen und Wagner, Ronald und Hühne, Christian (2016) TESTING AND ANALYIS OF POST-BUCKLING BEHAVIOUR OF ANISOGRID PREPREG PANEL UNDER COMPRESSION. 19th International Conference on Composite Structures, 2016-09-05 - 2016-09-08, Porto, Portugal.

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Kurzfassung

This paper reports on buckling test results and analysis of an Anisogrid Prepreg Panel under uniaxial compression. Due to the special design of the Anisogrid Prepreg Structure Concept with load bearing skin this investigation aims to characterize the wide post-buckling behaviour. Grid structures consist of intersecting, integral manufactured ribs with different directions (helical, circumferential and/or axial) and optionally a load bearing skin. The classical manufacturing method for aerospace grid structures is wet-filament winding. For airframes, an Anisogrid Prepreg Structure Concept has been developed considering high quality assurance demands and the need of a State of Art manufacturing process (Advanced Fibre Placement). In this investigation, a flat panel of this Anisogrid Prepreg Structure Concept has been manufactured, analysed and tested. The intersecting ribs are manufactured of Prepreg layers with 60% fibre volume ratio and special interface layers for a better connection of the grid structure to the skin. In the point of intersecting rib directions (the rib knots) an alternating pattern of cut and uncut layers is used. The interface layers are placed into the rib laminate building rib feet as connection to the skin. In numerical post-buckling analysis, anisogrid panels with triangular skin bays show a different buckling behaviour than orthogonal stiffened panels. It differs in terms of missing change of buckling modes in the skin until global buckling failure and in consequence keeping more constant panel stiffness. As result of the investigation, the post-buckling behaviour of the tested panel will be compared with the numerically observed behaviour and the functionality of the interface layers will be evaluated during post-buckling state.

elib-URL des Eintrags:https://elib.dlr.de/106653/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:TESTING AND ANALYIS OF POST-BUCKLING BEHAVIOUR OF ANISOGRID PREPREG PANEL UNDER COMPRESSION
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Niemann, SteffenSteffen.Niemann (at) dlr.dehttps://orcid.org/0000-0001-9272-0635NICHT SPEZIFIZIERT
Wagner, RonaldRonald.Wagner (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Hühne, ChristianChristian.Huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223NICHT SPEZIFIZIERT
Datum:6 September 2016
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:akzeptierter Beitrag
Stichwörter:Anisogrid, Panel, Analysis, Test, Post-Buckling, Compression, Airframe
Veranstaltungstitel:19th International Conference on Composite Structures
Veranstaltungsort:Porto, Portugal
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:5 September 2016
Veranstaltungsende:8 September 2016
Veranstalter :ICCM
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Luftverkehrsmanagement und Flugbetrieb
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AO - Air Traffic Management and Operation
DLR - Teilgebiet (Projekt, Vorhaben):L - Luftverkehrskonzepte und Betrieb (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Funktionsleichtbau
Hinterlegt von: Niemann, Herr Steffen
Hinterlegt am:31 Okt 2016 16:33
Letzte Änderung:24 Apr 2024 20:11

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