By analysing the amplitude of the shaft vibration, this article concludes that when the bolts get loose, it will result in resonance at the second critical speed and serious vibration.
本文利用振动测试记录，具体论证了汽轮机排汽端一侧轴承松动， 而导致汽轮机第二临界转速共振和强烈共振。
The dynamic deflection may become very large due to resonance in case of the flexible rotor speed approaching or exceeding its 1st or 2nd order critical speed.
而挠性转子在接近或超过其第一、二阶临界转速时，转子处于共振状态，这时动挠度达到很大的数值。
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