Abstract
The present paper describes a method to predict the stresses induced on the ship hull when the forward bottom impacts in water. The relative motion between the ship and waves is determined using a linear strip method. The time history of the relative motion indicates the conditions for the occurrence of slamming. Several empirical methods for the evaluation of the slamming loads based on experimental results are compared. The vibratory response of the ship is calculated by modelling it with finite elements. The response is obtained by modal superposition using the central differences for the time integration. Results are presented of an example on a container ship. It as shown that very large differences are obtained for the slam induced vertical bending moment amidships depending on the method used to calculate the slamming forces.
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