Arbelo, Mariano and Castro, Saullo and Kalnins, Kaspars and Ozolins, Olgerts and Khakimova, Regina and Degenhardt, Richard (2014) Experimental characterization of buckling load on imperfect cylindrical shells using the multiple perturbation load approach. European conference on spacecraft structures, materials & environmental testing, 1.-4.Apr. 2014, Braunschweig.
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Abstract
The paper present a discussion related to the use of the “Single perturbation Load Approach” (SPLA) as a methodology to represent geometric imperfection of imperfection sensitive shell structures prone to buckling. In this context, the paper compares the effect of the SPLA on the buckling load of composite cylindrical shells against an alternative methodology, which combines several perturbation loads in different positions, called “Multiple Perturbation Load Approach”. The aim of this paper is to investigate if the SPLA is the worst geometrical imperfection case scenario to be used for finite element simulation. Since the paper is based on experimental results, a benchmark case is developed using a composite cylindrical shell with a radius over thickness ratio of 400. The results of buckling load using one, two and three perturbation loads distributed along the surface of the cylinder shown that the less conservative knock-down factors are obtained by using SPLA
Item URL in elib: | https://elib.dlr.de/90355/ | |||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | |||||||||||||||||||||
Title: | Experimental characterization of buckling load on imperfect cylindrical shells using the multiple perturbation load approach | |||||||||||||||||||||
Authors: |
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Date: | 1 April 2014 | |||||||||||||||||||||
Refereed publication: | No | |||||||||||||||||||||
Open Access: | No | |||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||
In SCOPUS: | No | |||||||||||||||||||||
In ISI Web of Science: | No | |||||||||||||||||||||
Status: | Published | |||||||||||||||||||||
Keywords: | Buckling, experiments, Composites, imperfections | |||||||||||||||||||||
Event Title: | European conference on spacecraft structures, materials & environmental testing | |||||||||||||||||||||
Event Location: | Braunschweig | |||||||||||||||||||||
Event Type: | international Conference | |||||||||||||||||||||
Event Dates: | 1.-4.Apr. 2014 | |||||||||||||||||||||
Organizer: | DLR | |||||||||||||||||||||
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 - HL-Primärstrukturen für Orbitale Systeme (old) | |||||||||||||||||||||
Location: | Braunschweig | |||||||||||||||||||||
Institutes and Institutions: | Institute of Composite Structures and Adaptive Systems > Structural Mechanics | |||||||||||||||||||||
Deposited By: | Degenhardt, Richard | |||||||||||||||||||||
Deposited On: | 25 Aug 2014 11:16 | |||||||||||||||||||||
Last Modified: | 20 Jun 2021 15:45 |
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