Comparative Analysis of Calculation Method for Critical Rotating Speed of Centrifugal Fan Rotor

The analysis and calculation for critical speed of centrifugal fan rotor is the most crucial process for the structural design of centrifugal fan and plays a very important meaning in safe operation and full-life management of centrifugal fan rotor. This paper takes engineering calculations method and transfer matrix method and finite element method to calculate the critical speed of rotor,and makes comparision among those methods. It is greatly practical in actual engineering.