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Stochastic procedures for extreme wave induced responses in flexible ships
Jensen, Jorgen Juncher,Andersen, Ingrid Marie Vincent,Seng, Sopheak The Society of Naval Architects of Korea 2014 International Journal of Naval Architecture and Oc Vol.6 No.4
Different procedures for estimation of the extreme global wave hydroelastic responses in ships are discussed. Firstly, stochastic procedures for application in detailed numerical studies (CFD) are outlined. The use of the 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 behaviour and slamming load events. The possibility of combining FORM results with Monte Carlo simulations is discussed for faster but still very accurate estimation of extreme responses. Secondly, stochastic procedures using measured time series of responses as input are considered. The Peak-over-Threshold procedure and the Weibull fitting are applied and discussed for the extreme value predictions including possible corrections for clustering effects.
Stochastic procedures for extreme wave induced responses in flexible ships
Jørgen Juncher Jensen,Ingrid Marie Vincent Andersen,Sopheak Seng 대한조선학회 2014 International Journal of Naval Architecture and Oc Vol.6 No.4
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.