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本文强调指出,对于水平放置的转动体,其转动速度必须避开它的次临界转速。为了减小次临界转速引起的振动,本文还给出选择转动轴合理横截面和选择转子叶片合理数目的方法。
This paper emphasizes that for a horizontally placed rotor, its rotational speed must be shielded from its sub-critical speed. In order to reduce the sub-critical speed caused by vibration, this paper also gives a reasonable choice of rotating shaft cross-section and the choice of a reasonable number of rotor blades.