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Publications
Xiang, G. and Guedes Soares, C. (2020), “Incorporating irregular nonlinear waves in simulation of dropped cylindrical objects”, Journal of Engineering for the Maritime Environment, Vol. 234(1), pp. 272-283
The present study investigates the use of irregular nonlinear (second-order) waves for estimating loads on the dropped objects. The theory for the irregular nonlinear wave model is integrated into a motion prediction model to simulate the falling process of a dropped cylinder under irregular waves. Through frequency analysis, the simulated irregular waves are transformed into wave spectrum by FFT and compared with the target wave spectrum. A good agreement between simulated wave spectrum and target wave spectrum indicates the validity of the irregular nonlinear wave model. The effects of cylinder mass density, wave amplitude, and initial wave phase on the trajectory, terminal conditions of dropped cylindrical object are systematically investigated and the simulated results are compared with those induced by regular waves.
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