模型による船舶衝突実験

概要

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This report describes collision tests on free floating ship models. Two ship models, referred to as a struck ship and a striking ship were used for observing the movement of colliding ships. The shock responses for ship models were measured using boxtype ship model with two load cells. The positions of ship models obtained by the position analyzer with VIDEO camera, which was set on the tower about twenty meters in height above water surface. The results of experiment were as follows; (1) When the striking ship collided with midship of the stationary struck ship, the struck ship moved keeping her directional attitude the same in parallel with the position before collision. In this case, the moving angle and velocity for the center of gravity are calculated by formula (2)and(4). (2) At the collision to the other parts, the struck ship was horizontally rotated for the center of gravity, and it was varied parallel movement after a few second. The angular velocity of those cases are calculated by formula (10) and (14). (3) The impulse act on the struck ship can be obtained by formula (20), but when the mass of struck ship is smaller than striking ship, the impulse reach constant if the velocity of striking ship is more increase over some value, because the excesive impact energy was consumed only for washing the struck ship away.
独立行政法人海上技術安全研究所の論文
1983-11-30