Publicações

Fonseca, N. e Guedes Soares, C. (2010), “Global Structural Loads Induced by Extreme Waves on Ships”, Advanced Ship Design for Pollution Prevention, Guedes Soares, C. and Parunov, J. (Eds.), Taylor & Francis Group, Londres, UK, pp. 3-15

The paper a review of the work carried out by the authors on the motions and global structural loads induced on ships by extreme, or abnormal, waves. The calculation method is based on a nonlinear time domain strip theory where the radiation forces are represented by convolution integrals of impulse response functions, together with infinite frequency added masses and radiation restoring coefficients. The radiation and diffraction forces are assumed linear, while the Froude-Krylov and hydrostatic forces are computed exactly on the instantaneous hull wetted surface. The time domain code is applied to calculate the ship responses to deterministic wave traces that include abnormal waves. These wave traces were measured in the ocean and they include abnormal wave events. Several conclusions were obtained regarding: the dynamics of the ships encountering abnormal waves, the relations between the ship responses and the characteristics of the waves, the effect of ship length and the severity of the global ship responses.

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