切断時の索の挙動についての基礎実験

概要

論文の詳細を見る
There are not a few records of accidents caused by wriggling ropes as they so behave when they are quickly strained or snap. Although the cases are generally serious, on account of their almost instantaneousness the motions of wriggling ropes have not thoroughly been clarified yet. We studied the phenomena using high speed photography. Our camera can catch the motions every 2.5ms, and we used the camera to get the bird's-eye view of the phenomena. The summary of the results are as follows: (1) each envelope, which is to be drawn connecting the extreme sideway deviation of a wriggling rope, has a particular character defined by its twist, (2) lengthwise speed of a broken rope depends on its Young's modulus, and (3) the flying speed of a snapped rope can be estimated by solving an simplified equation of motion.
社団法人日本航海学会の論文
1985-09-20