Studies were conducted on the interaction between an underwater shock wave and a nearby submerged platformed cylinder. The aim was to predict, using FE modelling, the load arising from the fluid-structure coupling. Three FE simulations were conducted. In the first study, experimentally determined surface pressure profiles were applied directly to the cylinder. This enabled the application of loads with the sharpest rise time. Comparisons to acceleration measurements, however, indicated that this simulation did not faithfully model the fluidstructure interaction. In the second simulation, the cylinder was surrounded by water elements and the experimentally determined load was applied to a spherical water cavity. This permitted modelling the coupling between the water surface and the cylinder. In the third simulation the entire explosive sequence was modelled, from the detonation of the explosive to the response of the cylinder and platforms. This simulation included all aspects of the fluid-structure interaction. The predicted results from the later two studies were compared to experimental measurements. Particular attention was given to predicting the onset of cavitation and cavitation closure. All studies were limited to the incident wave and did not include the later effects from the bubble.
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