The University of Southampton
University of Southampton Institutional Repository

Overall buckling of lightweight stiffened panels using an adapted orthotropic plate method

Overall buckling of lightweight stiffened panels using an adapted orthotropic plate method
Overall buckling of lightweight stiffened panels using an adapted orthotropic plate method
The ultimate longitudinal bending strength of thin plated steel structures such as box girder bridges and ship hulls can be determined using an incremental–iterative procedure known as the Smith progressive collapse method. The Smith method first calculates the response of stiffened panel sub-structures in the girder and then integrates over the cross section of interest to calculate a moment–curvature response curve. A suitable technique to determine the strength behaviour of stiffened panels within the Smith method is therefore of critical importance. A fundamental assumption of the established progressive collapse method is that the buckling and collapse behaviour of the compressed panels within the girder occurs between adjacent transverse frames. However, interframe buckling may not always be the dominant collapse mode, especially for lightweight stiffened panels such as are found in naval ships and aluminium high speed craft. In these cases overall failure modes, where the buckling mode extends over several frame spaces, may dominate the buckling and collapse response. To account for this possibility, an adaptation to large deflection orthotropic plate theory is presented. The adapted orthotropic method is able to calculate panel stress–strain response curves accounting for both interframe and overall collapse. The method is validated with equivalent nonlinear finite element analyses for a range of regular stiffened panel geometries. It is shown how the adapted orthotropic method is implemented into an extended progressive collapse method, which enhances the capability for determining the ultimate strength of a lightweight stiffened box girder.
orthotropic plate, progressive collapse, buckling, stiffened panel, ultimate strength, plates, nonlinear finite element analysis
0141-0296
107-117
Benson, S.
d2aa8ad1-7041-4a95-b7ba-7c624cb30ac9
Downes, J.
ebc0f09b-9d33-4815-bedf-bc77df59c822
Dow, R.S.
15104fdd-94a5-4335-b907-ace457a1e630
Benson, S.
d2aa8ad1-7041-4a95-b7ba-7c624cb30ac9
Downes, J.
ebc0f09b-9d33-4815-bedf-bc77df59c822
Dow, R.S.
15104fdd-94a5-4335-b907-ace457a1e630

Benson, S., Downes, J. and Dow, R.S. (2015) Overall buckling of lightweight stiffened panels using an adapted orthotropic plate method. Engineering Structures, 85, 107-117. (doi:10.1016/j.engstruct.2014.12.017).

Record type: Article

Abstract

The ultimate longitudinal bending strength of thin plated steel structures such as box girder bridges and ship hulls can be determined using an incremental–iterative procedure known as the Smith progressive collapse method. The Smith method first calculates the response of stiffened panel sub-structures in the girder and then integrates over the cross section of interest to calculate a moment–curvature response curve. A suitable technique to determine the strength behaviour of stiffened panels within the Smith method is therefore of critical importance. A fundamental assumption of the established progressive collapse method is that the buckling and collapse behaviour of the compressed panels within the girder occurs between adjacent transverse frames. However, interframe buckling may not always be the dominant collapse mode, especially for lightweight stiffened panels such as are found in naval ships and aluminium high speed craft. In these cases overall failure modes, where the buckling mode extends over several frame spaces, may dominate the buckling and collapse response. To account for this possibility, an adaptation to large deflection orthotropic plate theory is presented. The adapted orthotropic method is able to calculate panel stress–strain response curves accounting for both interframe and overall collapse. The method is validated with equivalent nonlinear finite element analyses for a range of regular stiffened panel geometries. It is shown how the adapted orthotropic method is implemented into an extended progressive collapse method, which enhances the capability for determining the ultimate strength of a lightweight stiffened box girder.

PDF
Overall Buckling of Lightweight Stiffened Panels Using an Adapted Orthotropic Plate Method EPRINTS VERSION.pdf - Author's Original
Download (1MB)

More information

e-pub ahead of print date: 9 December 2014
Published date: February 2015
Keywords: orthotropic plate, progressive collapse, buckling, stiffened panel, ultimate strength, plates, nonlinear finite element analysis
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 373054
URI: https://eprints.soton.ac.uk/id/eprint/373054
ISSN: 0141-0296
PURE UUID: a3239084-9cd2-436c-835c-5afc4091fe1f
ORCID for J. Downes: ORCID iD orcid.org/0000-0003-2027-4474

Catalogue record

Date deposited: 06 Jan 2015 14:05
Last modified: 06 Jun 2018 12:23

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×