模擬クラックを有する回転軸の振動 : 第2報,解析

概要

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A vibration of the rotor wit imitation crack was experimentally studied in the first report and it was shown that the additional resonances at 1/2, 1/3, 1/4 and 1/5 of the critical speed and the unstable vibration at 2/3 of the critical speed are caused by the imitation crack. Since the rotor with imitation crack is qualitatively modeled to a cracked shaft with a disk, the unstable vibration and the forced vibration of the modeled rotor have been analyzed in this paper. As a result, it is obtained that the unstable regions exist at 2 times, a time, 2/3 and 1/2 of the critical speed and that the resonances are caused at 1/2, 1/3, 1/4 and 1/5 of the critical speed by a gravity effect. Then the relation between the experimental result in the first report and the influence of the crack is discussed.
一般社団法人日本機械学会の論文
1988-09-25