4Adiletta G,Guido A R,Rossi C.Chaotic motions of a rigid rotor in short journal bearing[J].Nonlinear Dynamics,1996,10(6):251-269.
5Namachchivaya N Sri.Hopf bifurcations in the presence of both parametric and external stochastically excitations[J].Journal of Applied Mechanics,1988,55(1):123-131.
6Muszynska A.Whirl and whip-rotor/bearing stability pro-blems[J].Journal of sound and vibration,1986,110(3):443-462.
7Muszynska A. Bently D E. Frequency-swept rotaing in- put perturbation techniques and identification of the flu- id force models in rotor-bearing-seal systems and fluid handling machines [ J ]. J of Sound and Vibration, 1990, 143 (1): 103-124.
