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    Investigation on the Stability and Bifurcation of a 3D Rotor Bearing System

    Source: Journal of Vibration and Acoustics:;2013:;volume( 135 ):;issue: 003::page 31017
    Author:
    Liu, Yi
    ,
    Liu, Heng
    ,
    Yi, Jun
    ,
    Jing, Minqing
    DOI: 10.1115/1.4023843
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The stability and bifurcation of a flexible 3D rotor system are investigated in this paper. The rotor is discretized by 3D elements and reduced by using component mode synthesis. Periodic motions and stability margins are obtained by using the shooting method and pathfollowing technique, and the local stability of the periodic motions is determined by using the Floquet theory. Comparisons indicate that 3D and 1D systems have a general resemblance in the bifurcation characteristics while mass eccentricity and rotating speed are changed. For both systems, the orbit size of the periodic motions has the same order of magnitude, and the vibration response has identical frequency components when typical bifurcations occur. The stress distribution and location of the maximum stress spot are determined by the bending mode of the rotor. The type of 3D element has a slight effect on the stability and bifurcation of the rotor system. Generally, this paper presents a feasible method for analyzing the stability and bifurcation of complex rotors without much structural simplification.
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      Investigation on the Stability and Bifurcation of a 3D Rotor Bearing System

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    contributor authorLiu, Yi
    contributor authorLiu, Heng
    contributor authorYi, Jun
    contributor authorJing, Minqing
    date accessioned2017-05-09T01:04:11Z
    date available2017-05-09T01:04:11Z
    date issued2013
    identifier issn1048-9002
    identifier othervib_135_3_031017.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/153593
    description abstractThe stability and bifurcation of a flexible 3D rotor system are investigated in this paper. The rotor is discretized by 3D elements and reduced by using component mode synthesis. Periodic motions and stability margins are obtained by using the shooting method and pathfollowing technique, and the local stability of the periodic motions is determined by using the Floquet theory. Comparisons indicate that 3D and 1D systems have a general resemblance in the bifurcation characteristics while mass eccentricity and rotating speed are changed. For both systems, the orbit size of the periodic motions has the same order of magnitude, and the vibration response has identical frequency components when typical bifurcations occur. The stress distribution and location of the maximum stress spot are determined by the bending mode of the rotor. The type of 3D element has a slight effect on the stability and bifurcation of the rotor system. Generally, this paper presents a feasible method for analyzing the stability and bifurcation of complex rotors without much structural simplification.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleInvestigation on the Stability and Bifurcation of a 3D Rotor Bearing System
    typeJournal Paper
    journal volume135
    journal issue3
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.4023843
    journal fristpage31017
    journal lastpage31017
    identifier eissn1528-8927
    treeJournal of Vibration and Acoustics:;2013:;volume( 135 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian