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Publicações
Rodrigues, J.M. e Guedes Soares, C. (2017), “Still water vertical bending moment in a flooding damaged ship”, Progress in the Analysis and Design of Marine Structures, Guedes Soares, C. & Garbatov Y. (Eds.), Taylor & Francis Group, London, UK, pp. 35-42
A study of the transient still water vertical loads progression, throughout the flooding process is presented for a shuttle tanker in full load condition, which is damaged amidhips. Box-shaped volumes delimit the damage zones, where structural parts inside these volumes are considered as openings through which fluids may flow. A discharge coefficient (Cd) is applied, to each so constructed damaged area, which hinders the flow. This coefficient typically relates to the effects of viscosity that reduce the flow rate, but it may also relate to effective damage areas which are smaller than those resulting from box-structure intersection.
The flooding progression is simulated by a numerical tool, using a dynamic equation of motion. A particular discharge coefficient distribution is applied to different damage locations near amidships. Maximum values of the vertical still water bending moment are obtained and compared with intact values and the ones from a quasi-static solution to the motions with unitary Cd distribution at the damage openings.
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