2009•Materials science forumOpen access

On the Bifurcation and Stability of Periodic Motion of the Rotor-Bearing System with Rub-Impact and Oil Whirl

Chang Li Liu, Xiuyuan Zhang, Li Cui, Jun Jiang, Jiamin Zheng

Abstract

In this paper, the dynamic model of rotor bearing system with rub-impact and oil whirl is formulated. Continuation-shooting method for the periodic solution of nonlinear non-autonomous system is used to obtain the bifurcation and stability of the periodic motion of the rotor-bearing system. The effect of the unbalance and rotor/stator clearance on the bifurcation and stability of the periodic motion of the rotor bearing system are analyzed respectively. The results obtained are compared with those of rotor-bearing system with oil whirl fault.

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Available abstract

Key concepts: Bearing (navigation), Bifurcation, Rotor (electric), Helicopter rotor, Control theory (sociology), Nonlinear system, Stator, Shooting method