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Benchmark study on the use of simplified structural codes to predict the ultimate strength of a damaged ship hull

Benchmark study on the use of simplified structural codes to predict the ultimate strength of a damaged ship hull
Benchmark study on the use of simplified structural codes to predict the ultimate strength of a damaged ship hull
The objective of the paper is to evaluate the ability of simplified structural analysis methods, based on the Smith formulation to predict the ultimate strength of a damaged ship. Such methods are now widely accepted as a reliable and fast way to obtain the longitudinal strength of an intact ship. In order to extend these methods to damaged ships, first a benchmark study on the intact ship was performed in order for the differences between the methods to be evaluated. Afterwards the methods are applied to the same ship section but with damage, which was defined by removing the structural elements from the affected areas. These, in turn, were obtained from a previous study in which a collision was simulated using a finite element model. Results obtained for the ultimate strength were compared against each other and with the results of the finite element analysis. Aside from some exceptions, the results of the approximate methods agreed well with each other for the intact and damaged conditions. The simplified methods are more conservative than the finite element analysis in hogging while they seem to give a very good approximation to the result for sagging with some of them overestimating this value
0020-868X
87-107
Guedes Soares, C.
14c8d397-654b-4b94-a69e-7da873d9b476
Luis, R.M.
6ff50845-5b8d-4d8c-8be5-5428ad620e11
Nikolov, P.
92986f27-7127-4705-8c7f-c3083c8cad6e
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Taczala, M.
ab19d9d0-e0c3-45b6-bc2f-d95f1f090ae5
Modiga, M.
7fe9bbdb-172c-4e32-b21c-51dfb14c9d57
Quesnel, T.
f16d3a78-ca41-4e2e-8167-b41de997b215
Toderan, C.
3d371f04-fed8-4806-9f94-79bc0f7c839b
Samuelides, M.
6d3100dc-85aa-4d0a-a74e-d201b4d5b5f9
Guedes Soares, C.
14c8d397-654b-4b94-a69e-7da873d9b476
Luis, R.M.
6ff50845-5b8d-4d8c-8be5-5428ad620e11
Nikolov, P.
92986f27-7127-4705-8c7f-c3083c8cad6e
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Taczala, M.
ab19d9d0-e0c3-45b6-bc2f-d95f1f090ae5
Modiga, M.
7fe9bbdb-172c-4e32-b21c-51dfb14c9d57
Quesnel, T.
f16d3a78-ca41-4e2e-8167-b41de997b215
Toderan, C.
3d371f04-fed8-4806-9f94-79bc0f7c839b
Samuelides, M.
6d3100dc-85aa-4d0a-a74e-d201b4d5b5f9

Guedes Soares, C., Luis, R.M., Nikolov, P., Downes, Jonathan, Taczala, M., Modiga, M., Quesnel, T., Toderan, C. and Samuelides, M. (2008) Benchmark study on the use of simplified structural codes to predict the ultimate strength of a damaged ship hull. International Shipbuilding Progress, 55 (1-2), 87-107. (doi:10.3233/ISP-2008-0040).

Record type: Article

Abstract

The objective of the paper is to evaluate the ability of simplified structural analysis methods, based on the Smith formulation to predict the ultimate strength of a damaged ship. Such methods are now widely accepted as a reliable and fast way to obtain the longitudinal strength of an intact ship. In order to extend these methods to damaged ships, first a benchmark study on the intact ship was performed in order for the differences between the methods to be evaluated. Afterwards the methods are applied to the same ship section but with damage, which was defined by removing the structural elements from the affected areas. These, in turn, were obtained from a previous study in which a collision was simulated using a finite element model. Results obtained for the ultimate strength were compared against each other and with the results of the finite element analysis. Aside from some exceptions, the results of the approximate methods agreed well with each other for the intact and damaged conditions. The simplified methods are more conservative than the finite element analysis in hogging while they seem to give a very good approximation to the result for sagging with some of them overestimating this value

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Published date: 2008
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 363775
URI: http://eprints.soton.ac.uk/id/eprint/363775
ISSN: 0020-868X
PURE UUID: 3a1ff3e4-2c78-4770-a3c6-f5dbece730e6
ORCID for Jonathan Downes: ORCID iD orcid.org/0000-0003-2027-4474

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Date deposited: 03 Apr 2014 10:49
Last modified: 09 Jan 2022 03:46

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Contributors

Author: C. Guedes Soares
Author: R.M. Luis
Author: P. Nikolov
Author: Jonathan Downes ORCID iD
Author: M. Taczala
Author: M. Modiga
Author: T. Quesnel
Author: C. Toderan
Author: M. Samuelides

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