Journal ArticleDOI
Chaos and bifurcation of a flexible rub-impact rotor supported by oil film bearings with nonlinear suspension
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In this paper, the dynamic analysis of the rotor-bearing system is studied and supported by oil film journal bearings, and it is concluded that the trajectory of rotor centre and bearing centre have undesirable vibrations.About:
This article is published in Mechanism and Machine Theory.The article was published on 2007-03-01. It has received 59 citations till now. The article focuses on the topics: Rotor (electric) & Bearing (mechanical).read more
Citations
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Dynamics of a Rigid Rotor Linear/Nonlinear Bearings System Subject to Rotating Unbalance and Base Excitations:
TL;DR: In this paper, a formulation for the dynamic analysis of rigid rotors subject to base excitations plus mass imbalance is presented, which allows for six motions at the machine base and takes into account the linear/nonlinear spring characteristics of the supporting bearings.
Journal ArticleDOI
Nonlinear phenomena, bifurcations, and routes to chaos in an asymmetrically supported rotor-stator contact system
Philip Varney,Itzhak Green +1 more
TL;DR: In this article, an asymmetric support stiffness matrix with cross-coupling between the x and y direction stiffnesses is presented, and the influence of support asymmetry on nonlinear rotor response is shown using rotor orbits, frequency spectra, Poincare sections, and bifurcation diagrams.
Journal ArticleDOI
Bifurcation and chaos analysis of spur gear pair with and without nonlinear suspension
TL;DR: In this paper, the dynamic behavior of a single degree-of-freedom spur gear system with and without nonlinear suspension is analyzed using bifurcation diagrams plotted using dimensionless damping coefficient and the dimensionless rotational speed ratio as control parameters.
Journal ArticleDOI
Bifurcation and chaos analysis of multistage planetary gear train
TL;DR: In this paper, a nonlinear time-varying dynamic model for a multistage planetary gear train, considering time varying meshing stiffness, nonlinear error excitation, and piece-wise backlash nonlinearities, is formulated.
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Nonlinear vibration phenomenon of an aircraft rub-impact rotor system due to hovering flight
Lei Hou,Yushu Chen,Qingjie Cao +2 more
TL;DR: The results obtained in this paper will contribute an understanding of the nonlinear dynamic behaviors of aircraft rotor systems in maneuvering flight.
References
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Book
Rotordynamics of Turbomachinery
TL;DR: In this paper, the authors present rotordynamic considerations in Turbomachinery design, including critical speeds and response to imbalance, as well as rotor balancing, bearingings and seals.
Journal ArticleDOI
Bifurcation and chaos in a rub-impact jeffcott rotor system
Fulei Chu,Z. Zhang +1 more
TL;DR: In this paper, Fourier series analysis and the Floquet theory are used to perform qualitative global analysis on bifurcation and stability of a rub-impact Jeffcott rotor. But the analysis is limited to two-dimensional, non-linear and periodic systems.
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Chaotic motions of a rigid rotor in short journal bearings
TL;DR: In this article, the conditions that give rise to chaotic motions in a rigid rotor on short journal bearings are investigated and determined, and a suitable symmetry was given to the rotor, to the supporting system, to acting system of forces and to the system of initial conditions, in order to restrict the motions of the rotor to translatory whirl.
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Rotor-to-stationary element sub-related vibration phenomena in rotating machinery: literature survey
TL;DR: Vibrations dues au frottement entre rotor and stator dans les machines tournantes. Analyse de la litterature parue sur le sujet as discussed by the authors.
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Some Observations of Chaotic Vibration Phenomena in High-Speed Rotordynamics
TL;DR: In this article, the vibratory response in the transition zone midway between adjacent zones of subharmonic response was identified where the response had all the characteristics of the chaotic motion identified in the numerical model and was confirmed by experimental observations of a high-speed turbomachine, operating at a speed between 8 and 9 times its fundamental rotor frequency when in local contact across a clearance in the support system.