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Vibration correlation technique for the estimation of real boundary conditions and buckling load of unstiffened plates and cylindrical shells

Arbelo, Mariano and de Almeida, Sergio and Donadon, Mauricio and Rett, Sandro and Degenhardt, Richard and Castro, Saullo and Kalnins, Kaspars and Ozolins, Olgerts (2014) Vibration correlation technique for the estimation of real boundary conditions and buckling load of unstiffened plates and cylindrical shells. Thin-Walled Structures, 79, pp. 119-128. Elsevier. DOI: 10.1016/j.tws.2014.02.006 ISSN 0263-8231

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S0263823114000469

Abstract

Nondestructive experimental methods to calculate the buckling load of imperfection sensitive thin-walled structures are one of the most important techniques for the validation of new structures and numerical models of large scale aerospace structures. Vibration correlation technique (VCT) allows determining equivalent boundary conditions and buckling load for several types of structures without reaching the instability point. VCT is already widely used for beam structures, but the technique is still under development for thin-walled plates and shells. This paper intends to explain the capabilities and current limitations of this technique applied to two types of structures under buckling conditions: flat plates and cylindrical shells prone to buckling. Experimental results for a flat plate and a cylindrical shell are presented together with reliable finite element models for both cases. Preliminary results showed that the VCT can be used to determine the realistic boundary conditions of a given test setup, providing valuable data for the estimation of the buckling load by finite element models. Also numerical results herein presented show that VCT can be used as a nondestructive tool to estimate the buckling load of unstiffened cylindrical shells. Experimental tests are currently under development to further validate the approach proposed herein.

Item URL in elib:https://elib.dlr.de/90106/
Document Type:Article
Title:Vibration correlation technique for the estimation of real boundary conditions and buckling load of unstiffened plates and cylindrical shells
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Arbelo, MarianoPFH GöttingenUNSPECIFIED
de Almeida, SergioITAUNSPECIFIED
Donadon, MauricioITAUNSPECIFIED
Rett, SandroITAUNSPECIFIED
Degenhardt, RichardDLRUNSPECIFIED
Castro, SaulloPFH GöttingenUNSPECIFIED
Kalnins, KasparsRTUUNSPECIFIED
Ozolins, OlgertsRTUUNSPECIFIED
Date:2014
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:79
DOI :10.1016/j.tws.2014.02.006
Page Range:pp. 119-128
Publisher:Elsevier
ISSN:0263-8231
Status:Published
Keywords:Vibration correlation technique; Buckling; Thin-walled structures; Finite element model; Cylindrical shells; Composite materials
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:11 Aug 2014 08:20
Last Modified:06 Sep 2019 15:20

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