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A new procedure for load shortening and elongation data for progressive collapse method

A new procedure for load shortening and elongation data for progressive collapse method
A new procedure for load shortening and elongation data for progressive collapse method
Progressive Collapse Method (PCM) has been broadly applied to predict moment-carrying capacity of a hull girder, however accuracy of PCM has not been much studied. Accuracy of PCM is known to be dependent on how Load-Shortening and -Elongation (LSE) curve of a structural units are well predicted. This paper presents a new procedure to determine LSE datum based on box girder Finite Element Analyses (FEAs) instead of using finite element model of stiffened panels. To verify reliability of FEA results, the simple box girder collapse test results are compared with FEA results of same box girders. It reveals one frame-based box girder model is sufficiently accurate in terms of ultimate strengths of the box girders. After extracting LSE data from the box girders, PCM-based moment-carrying capacities are compared with those from FEAs of the box girders. PCM results are found to be equivalent to FEAs in terms of moment-carrying capacity if accurate LSE data are secured. The new procedure is applied to well-known 1/3 scaled frigate full section. Very excellent moment-carrying capacity of frigate hull section is obtained from PCM with LSE data from box girder FEAs.
Progressive collapse method, Load-shortening and elongation data, Box girder, Moment-carrying capacity, Hull girder ultimate strength
2092-6782
705-719
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Tayyar, Gokhan Tansel
bc3d24b3-b061-4a80-aa60-1e9b73c77dec
Kvan, Illia
5c2380c9-7f06-435e-883d-95c1f57487ee
Choung, Joonmo
f5837d91-3a99-4784-8cc3-1c179bfbb611
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Tayyar, Gokhan Tansel
bc3d24b3-b061-4a80-aa60-1e9b73c77dec
Kvan, Illia
5c2380c9-7f06-435e-883d-95c1f57487ee
Choung, Joonmo
f5837d91-3a99-4784-8cc3-1c179bfbb611

Downes, Jonathan, Tayyar, Gokhan Tansel, Kvan, Illia and Choung, Joonmo (2017) A new procedure for load shortening and elongation data for progressive collapse method. International Journal of Naval Architecture and Ocean Engineering, 9 (6), 705-719. (doi:10.1016/j.ijnaoe.2016.10.005).

Record type: Article

Abstract

Progressive Collapse Method (PCM) has been broadly applied to predict moment-carrying capacity of a hull girder, however accuracy of PCM has not been much studied. Accuracy of PCM is known to be dependent on how Load-Shortening and -Elongation (LSE) curve of a structural units are well predicted. This paper presents a new procedure to determine LSE datum based on box girder Finite Element Analyses (FEAs) instead of using finite element model of stiffened panels. To verify reliability of FEA results, the simple box girder collapse test results are compared with FEA results of same box girders. It reveals one frame-based box girder model is sufficiently accurate in terms of ultimate strengths of the box girders. After extracting LSE data from the box girders, PCM-based moment-carrying capacities are compared with those from FEAs of the box girders. PCM results are found to be equivalent to FEAs in terms of moment-carrying capacity if accurate LSE data are secured. The new procedure is applied to well-known 1/3 scaled frigate full section. Very excellent moment-carrying capacity of frigate hull section is obtained from PCM with LSE data from box girder FEAs.

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More information

Submitted date: 27 July 2016
Accepted/In Press date: 19 October 2016
e-pub ahead of print date: 28 December 2016
Published date: November 2017
Keywords: Progressive collapse method, Load-shortening and elongation data, Box girder, Moment-carrying capacity, Hull girder ultimate strength
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 400400
URI: http://eprints.soton.ac.uk/id/eprint/400400
ISSN: 2092-6782
PURE UUID: 9ccd1c24-6699-4db6-aa0a-ea2e440bdf7d
ORCID for Jonathan Downes: ORCID iD orcid.org/0000-0003-2027-4474

Catalogue record

Date deposited: 16 Sep 2016 08:28
Last modified: 09 Jan 2022 03:46

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Contributors

Author: Jonathan Downes ORCID iD
Author: Gokhan Tansel Tayyar
Author: Illia Kvan
Author: Joonmo Choung

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