1971 年 14 巻 76 号 p. 1059-1068
Lateral vibration of a rotating shaft system with a rotating anisotropy is discussed in the present paper. Let the rotating speed of the shaft, the angular velocity of the anisotropy, the natural frequency of the system and the frequency of an external periodic force acting on the system be ω, λω, p and ω0 respectively. A resonant phenomenon arises when ω0≒2λω-p as well as when ω0≒p in such a vibratory system. It can be concluded that forced vibration with the frequency ω0 or ω'0(=2λω-ω0) arises when ω0≒p or ω0=p^-(=2λω-p). Furthermore, a certain vibration the cause of which is relatively hard to under stand can be defined physically by referring to the above conclusion.
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