Non-linear characteristics analysis of bending-torsion coupling vibration for double-shaft rotor system

摘要

Based on double-shaft rotor system, the study on non-linear characteristics analysis of bending-torsion coupling vibration is introduced. According to the system characteristics, the non-linear dynamics model is set up, in which the factors such as the brace stiffness, the bending-torsion coupling vibration are considered. Additionally, the response to dynamic unbalance parameters in certain scales is obtained and further analysis on relationship among the non-linear characteristics, the system input rational speed and the system national characteristics is described. The results could be used to fault diagnosis and failure prediction and also would be better for further comprehensive understanding of the double-shaft rotor system vibration.