Abstract
A structure optimization for the initial design stage using FEM of ship is under consideration in this paper. General bulk carrier is selected for the object of the optimization. Shapes of a bottom structure of ship are taken as design variable. Individual mesh-subdivision technique and multi-point constraint method are introduced for making this optimization possible. However,creating FEM data sets for them requires a lot of human power. In order to remove this drawback, PrimeShip-HULL is used since it has a function recognizing structure members of ship. A FEM data set which can be applied individual mesh-subdivision technique and multi-point constraint method is made from structure members of PrimeShip-HULL automatically. Five design variables for shape optimization of ship structure are considered here and a numerical example is shown. Genetic algorithm is used for this optimization in this study.
