MODELLING OF THE DYNAMIC BEHAVIOUR OF DAMAGED PLATFORMS BY TIME SIMULATION METHODS AND MODEL TESTS

Some aspects of the dynamic response in waves of a heavily listed, semisubmersible platform are discussed. Specifically, some of the results from an extensive set of model tests on the safety against capsizing of a damaged platform are presented. It is pointed out that the equations of motion are inherently nonlinear for certain list/draught conditions. In such cases time simulation methods are used to make predictions of the dynamic response. The results from such numerical predictions are compared with model test results. .