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The influence of Geometrical parameters on the buckling behavior of conical shell by the Single Perturbation Load Approach

Di Pasqua, Maria and Khakimova, Regina and Arbelo, Mariano and Degenhardt, Richard and Castro, Saullo and Riccio, Aniello (2014) The influence of Geometrical parameters on the buckling behavior of conical shell by the Single Perturbation Load Approach. Applied Composite Materials. Springer. ISSN 0929-189X

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Abstract

Since the development of the first theories to predict the buckling induced by axial compression in shells sensitive to imperfections, a significant discrepancy between theoretical and experimental results has been observed. Donnell and Koiter are among the first authors demonstrating, for these structures, the relevant influence of the geometrical imperfections on the reduction of the buckling load. Currently, the preliminary design of imperfections sensitive shell structures used in space applications is carried out according to the NASA SP-8007guideline. However, several studies have proven that this guideline leads to over-conservative design configurations when considering the geometrical and material imperfections existing in real cones. Since the pioneer work of Arbocz, alternative methods have been investigated to overcome this issue. Among the different approaches, in this paper, the Single Perturbation Load Approach (SPLA), originally developed byHühne as a deterministic way to calculate the knock-down factor of imperfection sensitive shells, is further studied. Indeed, a numerical investigation about the application of the SPLA to the simulation of the mechanical behavior of imperfection sensitive composite conical structures under axial compression is presented. This study is related to part of the work performed in the frame of the European Union (EU) project DESICOS.

Item URL in elib:https://elib.dlr.de/90529/
Document Type:Article
Title:The influence of Geometrical parameters on the buckling behavior of conical shell by the Single Perturbation Load Approach
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Di Pasqua, MariaDLRUNSPECIFIED
Khakimova, ReginaDLRUNSPECIFIED
Arbelo, MarianoPFH GöttingenUNSPECIFIED
Degenhardt, RichardDLRUNSPECIFIED
Castro, SaulloPFH GöttingenUNSPECIFIED
Riccio, AnielloUNSPECIFIEDUNSPECIFIED
Date:2014
Journal or Publication Title:Applied Composite Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:Springer
ISSN:0929-189X
Status:Accepted
Keywords:Buckling, conical shells, composite, knock-down factor
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - HL-Primärstrukturen für Orbitale Systeme
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Degenhardt, Richard
Deposited On:08 Sep 2014 09:13
Last Modified:10 Jan 2019 15:46

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