On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea state

The effects of hull-girder vibration on the fatigue strength of a Post-Panamax container ship are discussed in the present paper. Firstly, the short-term sea states are categorized according to the occurrence probability of each sea state. Time histories of hull-girder stress in short-term sea state...

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Main Authors: Fukasawa Toichi, Mukai Keiichi
Format: Article
Language:English
Published: Elsevier 2014-06-01
Series:International Journal of Naval Architecture and Ocean Engineering
Subjects:
Online Access:http://www.degruyter.com/view/j/ijnaoe.2014.6.issue-2/ijnaoe-2013-0190/ijnaoe-2013-0190.xml?format=INT
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author Fukasawa Toichi
Mukai Keiichi
author_facet Fukasawa Toichi
Mukai Keiichi
author_sort Fukasawa Toichi
collection DOAJ
description The effects of hull-girder vibration on the fatigue strength of a Post-Panamax container ship are discussed in the present paper. Firstly, the short-term sea states are categorized according to the occurrence probability of each sea state. Time histories of hull-girder stress in short-term sea states are calculated by means of a nonlinear simulation code of ship response assuming that the hull-girder is rigid and flexible. Then, the calculated stress peaks are processed by the rainflow counting method, where two different counting procedures are used based on the considerations of crack propagation behaviors. Finally, the fatigue damage in life time of the ship in each categorized short-term sea state is estimated by means of Miner’s rule. Based on the calculated results, the effects of hull-girder vibrations on the fatigue damage are clarified by disaggregated damage from short-term sea state.
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spelling doaj.art-5768c38b115b441b9187075a354147a62022-12-22T03:25:34ZengElsevierInternational Journal of Naval Architecture and Ocean Engineering2092-67822014-06-016243144110.2478/ijnaoe-2013-0190ijnaoe-2013-0190On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea stateFukasawa Toichi0Mukai Keiichi1Osaka Prefecture University, JapanOsaka Prefecture University, JapanThe effects of hull-girder vibration on the fatigue strength of a Post-Panamax container ship are discussed in the present paper. Firstly, the short-term sea states are categorized according to the occurrence probability of each sea state. Time histories of hull-girder stress in short-term sea states are calculated by means of a nonlinear simulation code of ship response assuming that the hull-girder is rigid and flexible. Then, the calculated stress peaks are processed by the rainflow counting method, where two different counting procedures are used based on the considerations of crack propagation behaviors. Finally, the fatigue damage in life time of the ship in each categorized short-term sea state is estimated by means of Miner’s rule. Based on the calculated results, the effects of hull-girder vibrations on the fatigue damage are clarified by disaggregated damage from short-term sea state.http://www.degruyter.com/view/j/ijnaoe.2014.6.issue-2/ijnaoe-2013-0190/ijnaoe-2013-0190.xml?format=INTFatigue strengthHull-girder vibrationMiner’s ruleShort-term sea statePost-Panamax container ship
spellingShingle Fukasawa Toichi
Mukai Keiichi
On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea state
International Journal of Naval Architecture and Ocean Engineering
Fatigue strength
Hull-girder vibration
Miner’s rule
Short-term sea state
Post-Panamax container ship
title On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea state
title_full On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea state
title_fullStr On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea state
title_full_unstemmed On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea state
title_short On the effects of hull-girder vibration upon fatigue strength of a Post-Panamax container ship disaggregated by short-term sea state
title_sort on the effects of hull girder vibration upon fatigue strength of a post panamax container ship disaggregated by short term sea state
topic Fatigue strength
Hull-girder vibration
Miner’s rule
Short-term sea state
Post-Panamax container ship
url http://www.degruyter.com/view/j/ijnaoe.2014.6.issue-2/ijnaoe-2013-0190/ijnaoe-2013-0190.xml?format=INT
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