日本造船学会論文集
Online ISSN : 1884-2070
Print ISSN : 0514-8499
ISSN-L : 0514-8499
セミサブメガフロートの応答最適化に関する研究
中田 諭志鈴木 英之
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ジャーナル フリー

2004 年 2004 巻 196 号 p. 207-215

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Many researches for a Semi-submersible Type Megafloat have been done on the middle-scale floating airport. However, few researches have been done from the viewpoint of the design of an elastic response. A characteristic of the elastic response must be designed under the constraints that a structural response is small enough and a safety of the structure is guaranteed. This is a subject to be investigated further. In this paper, in order to find the optimal form of a semi-submersible type megafloat, efficient optimization procedure is proposed. An objective function based on a concept of a risk is proposed in this optimization. This function unifies the structural weight and requirements of strength and functionality of the Megafloat such as a motion and an elastic response. To reduce heavy burden of calculation, a simplified analysis model with sufficient precision and short calculation time was developed and used for the optimization. The simplified analysis model was consisted of the equation of motion of a rectangular plate. Using this model, the value of the objective function was optimized and more efficient form of a semi-submersible type megafloat could be obtained.

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