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Boundary element analysis of stiffened panels with repair patches
File(s)
EABE-D-14-00245R1.pdf (2.1 MB)
Accepted version
Author(s)
Di Pisa, C
Aliabadi, MH
Type
Journal Article
Abstract
In this paper a boundary element method for analysis of fractured stiffened panels repaired with riveted or adhesively bonded patches is presented. In order to achieve such a formulation, several boundary element formulations involving the membrane and bending of displacement, and, stress resultants are coupled together to analyse the model. The multi-region formulation is used to simulate the stiffeners, which are modelled as an assembly. They are then connected to the sheets to form the stiffened panels by means of a rivet formulation. The dual boundary element method is used to simulate the presence of cracks, and the patches, treated as independent plates, are joined to the panel either with rivets or adhesive. A boundary element formulation for adhesive bonding is implemented to model the adhesively bonded patches. The Crack Opening Displacements (COD) method and the J-integral are implemented to evaluate the required fracture parameters. Examples presented include a wing box with a three spar section, with fully stiffened skin, and, the skin is considered to have a crack and a repair patch is used on top of the crack to stop its growth.
Date Issued
2015-07-01
Date Acceptance
2015-03-18
Citation
Engineering Analysis with Boundary Elements, 2015, 56, pp.162-175
URI
DOI
ISSN
0955-7997
Publisher
Elsevier
Start Page
162
End Page
175
Journal / Book Title
Engineering Analysis with Boundary Elements
Volume
56
Copyright Statement
© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Subjects
Science & Technology
Technology
Physical Sciences
Engineering, Multidisciplinary
Mathematics, Interdisciplinary Applications
Engineering
Mathematics
Repair patches
Boundary elements
Reissner plate
Assembled plate structures
Rivets
Adhesive bonding
Dual boundary element method
FRACTURE-MECHANICS ANALYSIS
ASSEMBLED PLATE STRUCTURES
ADHESIVELY BONDED PATCHES
SHEAR-DEFORMABLE PLATES
CRACK-GROWTH ANALYSIS
BENDING ANALYSIS
INTEGRAL FORMULATION
NONLINEAR-ANALYSIS
LAMINATED PLATES
LARGE DEFLECTION
Publication Status
Published