| Summary: | 碩士 === 國立海洋大學 === 造船工程學系 === 82 === The module ship segment elements were used to build the coupled
horizontal bending and torsional vibration of the ship with
large hatch opening. The natural frequencies and mode shapes
were solved by distributed-mass transfer matrix method and the
boundary conditions at fore and after ends were applied. The
equations of motion in global coordinate system were derived
using Hamilton's variational principle. Then, the
discontinuities between ship segments, the strengthened effect
of the cross decks, the horizontal vibration added mass and the
torsional added polar moment of inertia were considered. The
analysis results of a box beam with opening in this paper show
good coincidence by comparied with the results of the
referance[11].
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