To analyze the transverse vibration in rotor system caused by rotating-stall

a dynamical rotor system model with the transverse load by the fluctuation of pressure and flow coefficient was proposed by Mansoux model coupling with unbalance and rubbing load. Numerical calculation technology was used to investigate the vibration characteristics of rotor system under the conditions with/without the action of transverse load respectively. Furthermore

the influence of transverse load on the stability of rotor system was analyzed by axes contrails

spectrogram

Poincare figures and Bode figures at the same time. It indicates that the vibration of compressor caused by stall is nonlinear and mainly dominated by low frequency. This provides a certain theoretical basis and methods for reference for the aircraft engine design and vibration monitoring.