Hydroelastic analysis of ship hulls with large deck openings

The thin-walled beam theory and the three dimensional potential theory are applied to the hydroelastic analysis of ship hulls with large deck openings on the basis of dry mode method. A thin-walled beam FEM model has been developed to obtain dry natural frequencies and modes of ship hulls. The hydrodynamic problem is formulated according to the potential theory, and the boundary integral equation is solved through the higher-order boundary element method (HOBEM). Vibration experiments of an aluminum model ship are conducted in both air and water. Comparisons between experimental results and computational results show the effectiveness and efficiency of this method.