施設係留時におけるホタテ貝養殖漁船の安全性に関する研究-II : 横揺れ応答系を表現するモデルの構築

概要

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In the previous paper, we proposed a method to express roll response system of small fishing boats using Neual Network Model and presented the effectiveness of response model applying to tank tests. In this paper, we proposed a modified framework on the response model, which the input is only composed of transverse and vertical acceleratons on the freeboard deck of starboard at midship. Also, we applied the new modified model to the motions of fishing boats under fishing operations, and then analyzed the characteristics on the roll response based on the obtained-time series data. Using this modified model, we obtained following results.・For various changes on physical conditions such as initial inclination and direction of encounterd wave, our presented model could give good accuracies on estimations of roll motions in the actual fishing operations.・The effectiveness of our optimization method has also been shown by the improvement of estimating accuracies on roll motions, especially when the ship body inclines to the critical angle, so that the scupper is below water surface.
社団法人日本航海学会の論文
2002-03-25