FEA on vibration characteristics of an aero-engine turbine rotor

A method for vibration characteristics analysis of an aero-engine turbine rotor is presented in this paper. The natural modal analysis for dynamical analysis is made and the results can be used as criterion of many dynamics characteristics and further analysis. In this paper, the natural modal of an aero-engine turbine rotor with the joint hole fully constrained and in free status is calculated respectively. And the first ten natural frequencies and mode shapes are obtained. Also, vibration characteristics of each natural modal and the corresponding influence on the turbine rotor and other structure are discussed. The analysis method and results presented in this paper can be used for further analysis on optimal design and vibration safety verification for the turbine rotor system.