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Publicações
Ribeiro e Silva, S. e Guedes Soares, C. (2000), “Time Domain Simulation of Parametrically Excited Roll in Head Seas”, 7th International Conference on Stability of Ships and Ocean Vehicles (STAB’2000), M. Renilson (ed.), Vol. B, Launceston, Tasmania, Australia, 7-11 February, pp.652-664 (TD)
In this paper, the identification of a wave-induced parametric resonance condition in head seas is carried out with the use of a time-domain, non-linear numerical model of vessel's motions in 3 degrees-of-freedom (heave, roll and pitch). A quasi-static approach is adopted for the roll motion in waves, in which calculations of significant variations on transverse stability are made using a pressure integration technique over the submerged hull. Longitudinal plane motions include dynamic and hydrodynamic effects in waves for a given encounter frequency. The results provide new insights into the existing linearised theory of stability of vessels in a longitudinal seaway and demonstrate the usefulness of the technique proposed.
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