Global wave loads on a damaged ship

Yongwon Lee, Hoi-Sang Chan, Yongchang Pu, Atilla Incecik, Robert S. Dow

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A computational tool was applied based on a two dimensional linear method to predict the hydrodynamic loads for damaged ships. Experimental tests on a ship model have also been carried out to predict the hydrodynamic loads in various design conditions. The results of the theoretical method and experimental tests are compared to validate the theoretical method. The extreme wave induced loads have been calculated by short term prediction. For the loads in intact condition, the prediction with duration of 20 years at sea state 5 is used, while for loads in damaged conditions the prediction in 96 hours exposure time at sea 3 is used. The maximum values of the most probable extreme amplitudes of dynamic wave induced loads in damaged conditions are much less than those in intact condition because of the reduced time. An opening could change the distribution of not only stillwater bending moment but also wave-induced bending moment. It is observed that although some cross sections are not structurally damaged, the total loads acting on these cross sections after damage may be increased dramatically compared to the original design load in intact condition.
LanguageEnglish
Pages237-268
Number of pages32
JournalShips and Offshore Structures
Volume7
Issue number3
Early online date9 Aug 2011
DOIs
Publication statusPublished - 2012

Fingerprint

Ships
Bending moments
Hydrodynamics
Ship models

Keywords

  • damaged ship
  • flooding
  • model test
  • static load
  • wave-induced load
  • short-term prediction

Cite this

Lee, Yongwon ; Chan, Hoi-Sang ; Pu, Yongchang ; Incecik, Atilla ; Dow, Robert S. / Global wave loads on a damaged ship. In: Ships and Offshore Structures. 2012 ; Vol. 7, No. 3. pp. 237-268.
@article{f2881bdb166a4468b66bb0eace36773f,
title = "Global wave loads on a damaged ship",
abstract = "A computational tool was applied based on a two dimensional linear method to predict the hydrodynamic loads for damaged ships. Experimental tests on a ship model have also been carried out to predict the hydrodynamic loads in various design conditions. The results of the theoretical method and experimental tests are compared to validate the theoretical method. The extreme wave induced loads have been calculated by short term prediction. For the loads in intact condition, the prediction with duration of 20 years at sea state 5 is used, while for loads in damaged conditions the prediction in 96 hours exposure time at sea 3 is used. The maximum values of the most probable extreme amplitudes of dynamic wave induced loads in damaged conditions are much less than those in intact condition because of the reduced time. An opening could change the distribution of not only stillwater bending moment but also wave-induced bending moment. It is observed that although some cross sections are not structurally damaged, the total loads acting on these cross sections after damage may be increased dramatically compared to the original design load in intact condition.",
keywords = "damaged ship, flooding, model test, static load, wave-induced load, short-term prediction",
author = "Yongwon Lee and Hoi-Sang Chan and Yongchang Pu and Atilla Incecik and Dow, {Robert S.}",
year = "2012",
doi = "10.1080/17445302.2011.588081",
language = "English",
volume = "7",
pages = "237--268",
journal = "Ships and Offshore Structures",
issn = "1744-5302",
number = "3",

}

Global wave loads on a damaged ship. / Lee, Yongwon ; Chan, Hoi-Sang; Pu, Yongchang; Incecik, Atilla; Dow, Robert S.

In: Ships and Offshore Structures, Vol. 7, No. 3, 2012, p. 237-268.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Global wave loads on a damaged ship

AU - Lee, Yongwon

AU - Chan, Hoi-Sang

AU - Pu, Yongchang

AU - Incecik, Atilla

AU - Dow, Robert S.

PY - 2012

Y1 - 2012

N2 - A computational tool was applied based on a two dimensional linear method to predict the hydrodynamic loads for damaged ships. Experimental tests on a ship model have also been carried out to predict the hydrodynamic loads in various design conditions. The results of the theoretical method and experimental tests are compared to validate the theoretical method. The extreme wave induced loads have been calculated by short term prediction. For the loads in intact condition, the prediction with duration of 20 years at sea state 5 is used, while for loads in damaged conditions the prediction in 96 hours exposure time at sea 3 is used. The maximum values of the most probable extreme amplitudes of dynamic wave induced loads in damaged conditions are much less than those in intact condition because of the reduced time. An opening could change the distribution of not only stillwater bending moment but also wave-induced bending moment. It is observed that although some cross sections are not structurally damaged, the total loads acting on these cross sections after damage may be increased dramatically compared to the original design load in intact condition.

AB - A computational tool was applied based on a two dimensional linear method to predict the hydrodynamic loads for damaged ships. Experimental tests on a ship model have also been carried out to predict the hydrodynamic loads in various design conditions. The results of the theoretical method and experimental tests are compared to validate the theoretical method. The extreme wave induced loads have been calculated by short term prediction. For the loads in intact condition, the prediction with duration of 20 years at sea state 5 is used, while for loads in damaged conditions the prediction in 96 hours exposure time at sea 3 is used. The maximum values of the most probable extreme amplitudes of dynamic wave induced loads in damaged conditions are much less than those in intact condition because of the reduced time. An opening could change the distribution of not only stillwater bending moment but also wave-induced bending moment. It is observed that although some cross sections are not structurally damaged, the total loads acting on these cross sections after damage may be increased dramatically compared to the original design load in intact condition.

KW - damaged ship

KW - flooding

KW - model test

KW - static load

KW - wave-induced load

KW - short-term prediction

U2 - 10.1080/17445302.2011.588081

DO - 10.1080/17445302.2011.588081

M3 - Article

VL - 7

SP - 237

EP - 268

JO - Ships and Offshore Structures

T2 - Ships and Offshore Structures

JF - Ships and Offshore Structures

SN - 1744-5302

IS - 3

ER -