NONLINEAR SHIP LOADS - STOCHASTIC-MODELS FOR EXTREME RESPONSE

In this study we focus on stochastic analysis methods for selective si mulations, and we consider the extreme midspan moment of a fast-moving ship subjected to random Gaussian waves. We concentrate on analysis w ithin a stationary sea state and our purpose is to accurately estimate hourly maximum ship response (compared with the correct result per ho ur) within a sea state with as little computational resources as possi ble. We consider how the use of a limited number of short simulations with ''critical wave episodes'' (short wave segments which are likely candidates to produce extreme response in the simulated hour-long hist ory) reduces the cost of nonlinear time-domain ship response analysis.