How is the critical speed of rotors of compressors, hoods, etc. determined?
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How is the critical speed of rotors of compressors, hoods, etc. determined? How is the amplification factor obtained? Can the amplification factor be found through the Bode plot?
When the rotation frequency of the rotor is consistent with the natural frequency of the rotor, the resonance of the rotor will be excited, resulting in rotor resonance. The rotation frequency of the rotor at this moment is the critical speed of the rotor, divided into first and second orders. When the rotation frequency of the rotor is consistent with the natural frequency of the system (the entire equipment), the resonance of the system will be excited.