Hydroelasticity of very large container ships (CROSBI ID 542946)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Senjanović, Ivo ; Tomašević, Stipe ; Rudan, Smiljko ; Tomić, Marko ; Vladimir, Nikola ; Malenica, Šime
engleski
Hydroelasticity of very large container ships
Sea transport is rapidly increasing and Very Large Container Ships (VLCS) are built. They are more flexible and their natural frequencies can fall into the range of the encounter frequencies in an ordinary sea spectrum. Such conditions are not covered by the present Classification Rules for ship design and construction. So, structure design of VLCS is at the margin of the rules. Therefore, the wave induced hydroelastic response of VLCS becomes an imperative issue for i , improving the Classification Rules and ensuring ship safety. This paper is dealing with the methodology of hydroelasticity investigation, based on mathematical model which includes structural, hydrostatic and hydrodynamic submodels assembled in hydroelastic one. Special attention is paid to restoring stiffness in hydrostatic submodel. The modal superposition method is used, and ship natural modes are determined by the advanced beam theory which includes shear influence on torsion. Contribution of transverse buIkheads to hull stiffness is analysed. ID FEM model is verified by correlating dry natura1 vibrations with those obtained from 3D FEM model. Validation of the hydroelastic mathematical model is done by comparison with results from model test of a flexible segmented barge. Application of the developed numerica1 procedure is illustrated in case of a very large container ship.
container ship; hydroelasticity; mathematical model; numerical simulation
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Podaci o prilogu
51-70.
2008.
objavljeno
Podaci o matičnoj publikaciji
Design and Operation of Container Ships : Conference Proceedings
London : Delhi: The Royal Institution of Naval Architects (RINA)
987-1-905040-48-3
Podaci o skupu
Design and Operation of Container Ships
pozvano predavanje
03.07.2008-04.07.2008
London, Ujedinjeno Kraljevstvo