The Research of Stability Rule of Nonlinear Bearing Rotor System
Liu Heng, Lu Lie
(Xi'an Jiaotong University, 710049, Xi'an, P. R. China£©

Abstract: At present, for nonlinear bearing rotor system, people usually use the logarithmic decrement of its linear system as the stability rule of system, this has made a great difference of theory and experiment result. So this paper improves PCM method presented in £Û£±£Ý, and analyzed the nonlinear stability rule of symmetry rigid rotor supported by infinite length sliding bearing, and gives the nonlinear character of those phenomenon, so some references are given to establish the new stability rule for nonlinear bearing rotor system.
Keywords: nonlinear, bearing, rotor, stability, logarithmic decrement.