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ROBUST DESIGN CRITERION FOR AXIALLY LOADED CYLINDRICAL SHELLS – SIMULATION AND VALIDATION

Wagner, Ronald and Hühne, Christian and Niemann, Steffen and Khakimova, Regina (2017) ROBUST DESIGN CRITERION FOR AXIALLY LOADED CYLINDRICAL SHELLS – SIMULATION AND VALIDATION. Thin-Walled Structures, 115, pp. 152-162. Elsevier. DOI: 10.1016/j.tws.2016.12.017 ISSN 0263-8231

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S0263823116306863

Abstract

A currently used guideline for cylinder structures under axial compression is the NASA SP-8007 which is based on empirical data from the 1960s. This guideline provides knock-down factors (KDF) for the lower bound of the buckling load which depend on the cylinder radius-to-thickness ratio but neglect the influence of the cylinder length L. Experimental results indicated an influence of the cylinder length on the buckling load but a clear dependency could not be established because of the insufficient amount of available data. A comprehensive numerical investigation was performed in order to study the influence of length effect on the lower bound of the buckling load. The numerical analysis is based on the single boundary perturbation approach (SBPA) for cylindrical shells. The results verify that there is a significant influence of the cylinder length L on the lower bound of the buckling load. Semi-analytic knock-down factors for the stability failure of axially loaded cylindrical shells were determined which can be used for a simple and fast approximation of the lower bound of the buckling load. The corresponding SBPA thresholds were validated with a number of high fidelity buckling experiments and deliver much higher KDFs than currently used empirical guidelines.

Item URL in elib:https://elib.dlr.de/112422/
Document Type:Article
Title:ROBUST DESIGN CRITERION FOR AXIALLY LOADED CYLINDRICAL SHELLS – SIMULATION AND VALIDATION
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wagner, Ronaldronald.wagner (at) dlr.deUNSPECIFIED
Hühne, Christianchristian.huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223
Niemann, Steffensteffen.niemann (at) dlr.deUNSPECIFIED
Khakimova, ReginadlrUNSPECIFIED
Date:June 2017
Journal or Publication Title:Thin-Walled Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:115
DOI :10.1016/j.tws.2016.12.017
Page Range:pp. 152-162
Editors:
EditorsEmail
Loughlan, J.UNSPECIFIED
Publisher:Elsevier
ISSN:0263-8231
Status:Published
Keywords:Buckling; Cylindrical shells; Robust design; Single perturbation load approach; Knock-down factor; High-fidelity experiments; Imperfections
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 - Numerische Verfahren und Simulation
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Wagner, Ronald
Deposited On:29 Jun 2017 13:26
Last Modified:06 Sep 2019 15:20

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