Analysis of imbalance response of the rotor test bed

The calculation of imbalance response plays an important role in the dynamical analysis of rotor-bearing system, the FEM is one of the methods that can calculate the dynamical response, and the ANSYS is a large finite element analysis software. This paper studies on the rotor test bed, and the supporting condition of the rotor-bearing is set in reason with the help of ANSYS. Dynamic parameter such as critical speed of the rotor test bed is calculated and the response characteristic of the rotor-bearing system under various imbalances is analysed, the imbalance responses of different position of the rotor are shown. The results show that, the first-order amplitude of the whole system is different from the second-order amplitude under the same imbalance.