Abstract
The higher-order theory of thin-walled girders, with mode-dependent stiffness parameters, is used to analyse coupled horizontal and torsional vibration of a ship hull as a nonuniform beam. A beam finite element of eight degrees of freedom is developed. Accuracy of the finite element procedure, in the case of a simple supported rectangular tube and channel girder, is checked. Application of the procedure for ship structures, analysing vibration of a pontoon with a large deck opening, is illustrated.
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