Stability of Periodic Motion on the Rotor-Bearing System with Coupling Faults of Crack and Rub-Impact

A dynamic model was set up for the rotor-bearing system with coupling faults of crack and rub-impact. Using the continuation-shooting algorithm for periodic solution of nonlinear non-autonomous system, the stability of the system periodic motion was studied by the Floquet theory. The saddle-node bif...

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Veröffentlicht in:Journal of mechanical science and technology 2007-06, Vol.21 (6), p.860-864
Hauptverfasser: LUO, Yue-Gang, REN, Zhao-Hui, HUI MA, TAO YU, WEN, Bang-Chun
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Sprache:eng
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Zusammenfassung:A dynamic model was set up for the rotor-bearing system with coupling faults of crack and rub-impact. Using the continuation-shooting algorithm for periodic solution of nonlinear non-autonomous system, the stability of the system periodic motion was studied by the Floquet theory. The saddle-node bifurcation, periodic-doubling bifurcation and the Hopf bifurcation were found. There are peculiar dynamic characteristics of the rotor-bearing system with coupling faults of crack and rub-impact that differs from single fault. The conclusions provide theoretic basis reference for the failure diagnosis of the rotor-bearing system with coupling faults of crack and rub-impact fault.
ISSN:1738-494X
1976-3824
DOI:10.1007/BF03027058