The University of Southampton
University of Southampton Institutional Repository

Determination of critical factors for the strength assessment of damaged steel ship structures

Determination of critical factors for the strength assessment of damaged steel ship structures
Determination of critical factors for the strength assessment of damaged steel ship structures
A significant number of damage events continue to occur to ocean going vessels, many of which remain afloat in need of assistance to evaluate remedial actions to minimise the risk of further damage and conditions for onward transit for a repair facility. Therefore, it is vital that the post damage situation is rapidly understood to reduce damage propagation occurring, reducing the cost of repair and allowing more vessels to be recovered safely, ensuring the safety of personnel onboard. After an incident, it is often difficult to determine and model the precise damage scenario due to the inability to survey the area. Each scenario will have variability in geometrical and material properties, which will affect the residual strength of the structure. Variations in these aspects are not accounted for in methods currently utilised in damage response scenarios. Therefore, to be able to more accurately analyse the damage and provide better guidance to the crew in real time, it is important that this variability can be analysed, allowing an understanding of worst and best case scenarios, the probabilities of these occurring and their affect on the structural strength. Finite element analysis has been used to model damage scenarios due to the high level of accuracy that can be achieved. This paper demonstrates the implications of damage aperture on the limit state of stiffened steel panels, investigating the residual strength of the damaged structures and their sensitivity to variations in damage event, geometric and material properties. The results are then compared with the Smith and Dow progressive collapse method, [1,2], with conclusions being drawn about the use of this method in damage situations. Further to this, the effects of variability in the ship are investigated for damage scenarios, showing that these influence the ultimate strength of the structure to a larger extent in the failure of damaged plates than intact scenarios; however, lack of knowledge relating to the area of the damage could overshadow other potential variability within these scenarios.
9780791844342
53-62
ASME
Underwood, J. M.
7da8eb41-8b0a-4205-b4b7-98982baad296
Sobey, A. J.
8c89919e-003f-496b-8971-753e6cd5c0e3
Blake, J. I. R.
6afa420d-0936-4acc-861b-36885406c891
Shenoi, R. Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960
Cuckson, B.
81fbbe5a-a43d-488d-ad1d-d5f2522e2b3d
Underwood, J. M.
7da8eb41-8b0a-4205-b4b7-98982baad296
Sobey, A. J.
8c89919e-003f-496b-8971-753e6cd5c0e3
Blake, J. I. R.
6afa420d-0936-4acc-861b-36885406c891
Shenoi, R. Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960
Cuckson, B.
81fbbe5a-a43d-488d-ad1d-d5f2522e2b3d

Underwood, J. M., Sobey, A. J., Blake, J. I. R., Shenoi, R. Ajit and Cuckson, B. (2011) Determination of critical factors for the strength assessment of damaged steel ship structures. In Proceedings of ASME 2011: 30th International Conference on Ocean, Offshore and Arctic Engineering. vol. 2, ASME. pp. 53-62 . (doi:10.1115/OMAE2011-49099).

Record type: Conference or Workshop Item (Paper)

Abstract

A significant number of damage events continue to occur to ocean going vessels, many of which remain afloat in need of assistance to evaluate remedial actions to minimise the risk of further damage and conditions for onward transit for a repair facility. Therefore, it is vital that the post damage situation is rapidly understood to reduce damage propagation occurring, reducing the cost of repair and allowing more vessels to be recovered safely, ensuring the safety of personnel onboard. After an incident, it is often difficult to determine and model the precise damage scenario due to the inability to survey the area. Each scenario will have variability in geometrical and material properties, which will affect the residual strength of the structure. Variations in these aspects are not accounted for in methods currently utilised in damage response scenarios. Therefore, to be able to more accurately analyse the damage and provide better guidance to the crew in real time, it is important that this variability can be analysed, allowing an understanding of worst and best case scenarios, the probabilities of these occurring and their affect on the structural strength. Finite element analysis has been used to model damage scenarios due to the high level of accuracy that can be achieved. This paper demonstrates the implications of damage aperture on the limit state of stiffened steel panels, investigating the residual strength of the damaged structures and their sensitivity to variations in damage event, geometric and material properties. The results are then compared with the Smith and Dow progressive collapse method, [1,2], with conclusions being drawn about the use of this method in damage situations. Further to this, the effects of variability in the ship are investigated for damage scenarios, showing that these influence the ultimate strength of the structure to a larger extent in the failure of damaged plates than intact scenarios; however, lack of knowledge relating to the area of the damage could overshadow other potential variability within these scenarios.

This record has no associated files available for download.

More information

Published date: June 2011
Venue - Dates: ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, Rotterdam, Netherlands, 2011-06-18 - 2011-06-23
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 203537
URI: http://eprints.soton.ac.uk/id/eprint/203537
ISBN: 9780791844342
PURE UUID: b00b1c9f-e763-4382-9d7e-ec46df87aa3f
ORCID for J. I. R. Blake: ORCID iD orcid.org/0000-0001-5291-8233

Catalogue record

Date deposited: 17 Nov 2011 13:54
Last modified: 10 Jan 2022 02:40

Export record

Altmetrics

Contributors

Author: J. M. Underwood
Author: A. J. Sobey
Author: J. I. R. Blake ORCID iD
Author: R. Ajit Shenoi
Author: B. Cuckson

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 http://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.

×