A lateral vibration analysis of a flexible rotor bearing-system

Ekin Dede, Helen Wu

    Research output: Chapter in Book / Conference PaperConference Paperpeer-review

    Abstract

    ![CDATA[An unbalanced rotor will generate excessive force on various components of the machine adversely affecting the machines longevity. Analytic study of rotor vibration plays an important role in design, and fault detection and diagnosis of rotating machines. In this paper, vibration characteristics of a simple rotor system due to a central mass unbalance were analysed numerically under two cases. In Case I, bearings have symmetric, isotropic stiffness and damping matrices, while in Case II they have asymmetric, non-isotropic stiffness and damping matrices. It was found in Case I that critical speed occurs at 1690 rpm and the orbital trajectories of rotor mass stations are circular and co-rotational. In Case II, vibration in x-direction and y-direction maximize at 1660 rpm and 1680 rpm, respectively. Response orbit of either the bearing or the disk is elliptic and the size, shape, and orientation of the elliptical orbit changes with shaft speed, and also from the bearing to the disk. Further, both cases show a significant shaft bending contribution to the total response displacement of the disk.]]
    Original languageEnglish
    Title of host publicationProceedings of the 2nd International Conference on Mechanical Engineering and Mechatronics (ICMEM̢۪13), Toronto, Ontario, Canada, 8-9 August 2013
    PublisherInternational ASET Inc.
    Pages149-1-149-8
    Number of pages8
    ISBN (Print)9780986718397
    Publication statusPublished - 2013
    EventInternational Conference on Mechanical Engineering and Mechatronics -
    Duration: 8 Aug 2013 → …

    Conference

    ConferenceInternational Conference on Mechanical Engineering and Mechatronics
    Period8/08/13 → …

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