33 部材認識機能を利用した船体構造の形状最適化システムに関する研究 : 船体構造二重底部の形状最適化

概要

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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.
社団法人日本船舶海洋工学会の論文