Study on Vibration of the Anisotropically Rotor System with Different Sections Based on the Improved Riccati Transfer Matrix Method

The vibration problem of the high-pressure rotor system with different sections and the elastic ring squeeze film damper is the research topic of this paper. Firstly, the equivalent stiffness and damping of the oil film of ERSFD are obtained by using the finite-difference theory. By improving the Riccati transfer matrix method, the transfer matrix and the response equation are established about the disk-shaft and the conical structures. The oil clearance and eccentricity during the motion of the elastic ring from the suspension to the inner and outer bosses contact are discussed. The unbalance values of the disk is concerned too. The vibration response of each node is analyzed. The reasonable region of relevant parameters is given. The obtained results provide a basis for the dynamic design of the complex rotor system.