Stochastic procedures for extreme wave induced responses in flexible ships
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Different procedures for estimation of the extreme global wave hydroelastic responses in ships arediscussed. Firstly, stochastic procedures for application in detailed numerical studies (CFD) are outlined. The use ofthe First Order Reliability Method (FORM) to generate critical wave episodes of short duration, less than 1 minute,with prescribed probability content is discussed for use in extreme response predictions including hydroelastic behaviourand slamming load events. The possibility of combining FORM results with Monte Carlo simulations is discussedfor faster but still very accurate estimation of extreme responses. Secondly, stochastic procedures using measured timeseries of responses as input are considered. The Peak-over-Threshold procedure and the Weibull fitting are applied anddiscussed for the extreme value predictions including possible corrections for clustering effects.
Abstract
Different procedures for estimation of the extreme global wave hydroelastic responses in ships arediscussed. Firstly, stochastic procedures for application in detailed numerical studies (CFD) are outlined. The use ofthe First Order Reliability Method (FORM) to generate critical wave episodes of short duration, less than 1 minute,with prescribed probability content is discussed for use in extreme response predictions including hydroelastic behaviourand slamming load events. The possibility of combining FORM results with Monte Carlo simulations is discussedfor faster but still very accurate estimation of extreme responses. Secondly, stochastic procedures using measured timeseries of responses as input are considered. The Peak-over-Threshold procedure and the Weibull fitting are applied anddiscussed for the extreme value predictions including possible corrections for clustering effects.
참고문헌 (17)
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