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Investigation of Buckling Behavior of Composite Shell Structures with Cutouts

Arbelo, Mariano and Herrmann, Anne_Marie and Castro, Saullo and Khakimova, Regina and Zimmermann, Rolf and Degenhardt, Richard (2014) Investigation of Buckling Behavior of Composite Shell Structures with Cutouts. Applied Composite Materials, 22 (6), pp. 623-636. Springer. doi: 10.1007/s10443-014-9428-x. ISSN 0929-189X.

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Official URL: https://link.springer.com/article/10.1007/s10443-014-9428-x


Thin-walled cylindrical composite shell structures can be applied in space applications, looking for lighter and cheaper launcher transport system. These structures are prone to buckling under axial compression and may exhibit sensitivity to geometrical imperfections. Today the design of such structures is based on NASA guidelines from the 1960’s using a conservative lower bound curve generated from a database of experimental results. In this guideline the structural behavior of composite materials may not be appropriately considered since the imperfection sensitivity and the buckling load of shells made of such materials depend on the lay-up design. It is clear that with the evolution of the composite materials and fabrication processes this guideline must be updated and / or new design guidelines investigated. This need becomes even more relevant when cutouts are introduced to the structure, which are commonly necessary to account for access points and to provide clearance and attachment points for hydraulic and electric systems. Therefore, it is necessary to understand how a cutout with different dimensions affects the buckling load of a thin-walled cylindrical shell structure in combination with other initial geometric imperfections. In this context, this paper present some observations regarding the buckling load behavior vs. cutout size and radius over thickness ratio, of laminated composite curved panels and cylindrical shells, that could be applied in further recommendations, to allow identifying when the buckling of the structure is dominated by the presence of the cutout or by other initial imperfections.

Item URL in elib:https://elib.dlr.de/114117/
Document Type:Article
Title:Investigation of Buckling Behavior of Composite Shell Structures with Cutouts
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Arbelo, Marianopfh göttingenUNSPECIFIED
Herrmann, Anne_Mariepfh-göttingenUNSPECIFIED
Castro, Saullopfh göttingenUNSPECIFIED
Khakimova, ReginadlrUNSPECIFIED
Zimmermann, RolfRolf.Zimmermann (at) dlr.deUNSPECIFIED
Degenhardt, RicharddlrUNSPECIFIED
Date:27 November 2014
Journal or Publication Title:Applied Composite Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s10443-014-9428-x
Page Range:pp. 623-636
Keywords:Shell buckling Cylinder with openings Knock-down factor Thin-walled structures Composite materials Finite element mode
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Numerische Verfahren und Simulation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Degenhardt, Richard
Deposited On:18 Sep 2017 09:35
Last Modified:18 Sep 2017 09:35

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