Comparison of Rotor Critical Rotation Speeds Solution Method

The critical speed of all kinds of rotors which work in high speed must be calculated in project so that all rotors could work in the safe rang of speeds.The critical speed of an experimental rotor is calculated by using the analysis method and the finite element method based on ANSYS,and by using the experimental method its critical speed value is obtained again.The results of two methods are compared to the actual value measured in experiment,and then the accuracy and the feasibility of two methods is examined.It is provided that the finite element method based on ANSYS is more accurately and conveniently.All this will provide the method basis for critical speed solution of other structures in project.