FEA on Vibration Characteristics of an Aero-Engine Compressor Disc

This paper presents a FEA method for vibration characteristics analysis of aero-engine compressor disc. An actual modal analysis of a certain aero-engine compressor disc is made based on this method. The first ten natural frequencies and modes of this compressor disc in fully constrained boundary condition and in free vibration condition are obtained respectively. And also, the vibration characteristics of each natural mode and its effect on compressor disc and other accessories are analyzed in depth. The analysis process and results presented in this paper can be references for further study on optimal design and vibration safety verification for this aero-engine compressor disc.