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    Dynamics of Rotor Bearing Systems Supported by Floating Ring Bearings

    Source: Journal of Tribology:;1982:;volume( 104 ):;issue: 004::page 469
    Author:
    Chin-Hsiu Li
    DOI: 10.1115/1.3253258
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A general analysis and computational method is presented for calculating the unbalance and self-excited response of high-speed rotor-bearing systems. The analysis is applied to the calculation of the transient response of a rotor supported by two floating ring bearings. Included in the analysis are rotor gyroscopic moments as well as the flexibility of the shaft. Emphasis is placed on determining rotor whirl orbits as influenced by rotor unbalance, the phase angle of the unbalance masses, the clearances of the bearings, the viscosity of the lubricant, and the shock loads that the rotor may be subjected to. It is found that the rotor-bearing system normally operates in an unstable mode in the linear stability sense. However, the nonlinear forces developed by the fluid films of the floating ring bearing will bring the rotor-bearing system to whirl at a limit cycle well within the clearance circles. It is also shown that the rotor assembly will undergo a conical motion when the rotor and wheel configuration is asymmetrical.
    keyword(s): Dynamics (Mechanics) , Bearings , Rotors , Whirls , Rotor assembly , Computational methods , Cycles , Fluid films , Wheels , Force , Stability , Plasticity , Motion , Viscosity , Lubricants , Stress , Transients (Dynamics) , Shock (Mechanics) AND Clearances (Engineering) ,
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      Dynamics of Rotor Bearing Systems Supported by Floating Ring Bearings

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    http://yetl.yabesh.ir/yetl1/handle/yetl/96425
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    contributor authorChin-Hsiu Li
    date accessioned2017-05-08T23:14:24Z
    date available2017-05-08T23:14:24Z
    date copyrightOctober, 1982
    date issued1982
    identifier issn0742-4787
    identifier otherJOTRE9-28654#469_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/96425
    description abstractA general analysis and computational method is presented for calculating the unbalance and self-excited response of high-speed rotor-bearing systems. The analysis is applied to the calculation of the transient response of a rotor supported by two floating ring bearings. Included in the analysis are rotor gyroscopic moments as well as the flexibility of the shaft. Emphasis is placed on determining rotor whirl orbits as influenced by rotor unbalance, the phase angle of the unbalance masses, the clearances of the bearings, the viscosity of the lubricant, and the shock loads that the rotor may be subjected to. It is found that the rotor-bearing system normally operates in an unstable mode in the linear stability sense. However, the nonlinear forces developed by the fluid films of the floating ring bearing will bring the rotor-bearing system to whirl at a limit cycle well within the clearance circles. It is also shown that the rotor assembly will undergo a conical motion when the rotor and wheel configuration is asymmetrical.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDynamics of Rotor Bearing Systems Supported by Floating Ring Bearings
    typeJournal Paper
    journal volume104
    journal issue4
    journal titleJournal of Tribology
    identifier doi10.1115/1.3253258
    journal fristpage469
    journal lastpage476
    identifier eissn1528-8897
    keywordsDynamics (Mechanics)
    keywordsBearings
    keywordsRotors
    keywordsWhirls
    keywordsRotor assembly
    keywordsComputational methods
    keywordsCycles
    keywordsFluid films
    keywordsWheels
    keywordsForce
    keywordsStability
    keywordsPlasticity
    keywordsMotion
    keywordsViscosity
    keywordsLubricants
    keywordsStress
    keywordsTransients (Dynamics)
    keywordsShock (Mechanics) AND Clearances (Engineering)
    treeJournal of Tribology:;1982:;volume( 104 ):;issue: 004
    contenttypeFulltext
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