樹脂弾性体の緩衝性能に関する研究-IV : ペルプレン緩衝工の船首衝突時の特性

概要

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The resin elastic body is useful as the material of protective device, because have restoration and able to absorb collision energy. Recently, we are doing the research that checks the characteristic of the protective device by the model experiment and numerical analysis and used the urethane foam and pelprene protective device as a model. In the previous paper, we discussed the characteristic of the time that the ship penetrated into urethane foam and pelprene protective device statically at late speed. In the present paper, we report about the research result of the model experiment in the time that the ship collided dynamically. The following results are obtained. (1) When the entrance angle of the bow becomes big, the slope of a reaction force-bow penetration curve becomes steep. At this time, the change rate of the slope becomes steep with the increase of the entrance angle. This characteristic is the same result as the static experiment that has checked to the previous time. (2) Compression force and also reaction force do not agree with a dynamic experiment and static experiment. In the experiment in this time, a dynamic experimental value became about 1.5〜1.6 times of a static experimental value.
社団法人日本航海学会の論文
2000-03-25