FANG Zhi-chu. Study on Catastrophic Mechanism for Rotor Drop Transient Vibration Following Magnetic Bearing Failure[J]. Applied Mathematics and Mechanics, 2002, 23(11): 1177-1182.
Citation: FANG Zhi-chu. Study on Catastrophic Mechanism for Rotor Drop Transient Vibration Following Magnetic Bearing Failure[J]. Applied Mathematics and Mechanics, 2002, 23(11): 1177-1182.

Study on Catastrophic Mechanism for Rotor Drop Transient Vibration Following Magnetic Bearing Failure

  • Received Date: 2001-10-24
  • Rev Recd Date: 2002-06-28
  • Publish Date: 2002-11-15
  • The nonlinear and transient vibration of a rotor,which dropped onto back-up bearings when its active magnetic bearings were out of order,was investigated.After strictly deriving its equations of motion and performing numerical simulations,the time-histories of rotating speed of the dropping rotor,and normal force at the rubbing contact point as well as the frequency spectrum of the vibration displacement of back-up bearings are fully analyzed.It is found that the strong and unsteady forced bending vibration of the unbalancced and damped rotor decelerating through its first bending vibtation of the unbalaned and damped rotor decelerating through its first critical speed as well as chattering at high frequencies caused by the non-linearity at the rubbing contact point between the journal and back-up bearings may lead to the catastrophic damage of the system.
  • loading
  • [1]
    Ishii T, Kirk R G. Transient response technique applied to active magnetic bearing machinery during rotor drop[J].J Vibration & Acoustics,1996,118(2):154-163.
    [2]
    Kirk R G. Investigation of rotor drop transient response following active magnetic bearing failure in critical path turbomachinery[A]. In: Progress Report[C].VA Tech,USA: Dept of Mech Engrg,1997.
    [3]
    Allair P E. Rotor drop nonlinear transient analysis of magnetic bearing rotors on auxiliary bearings[A]. In: Proc 7th Conf on Nonlinear Vibration, Stability & Rotordynamics[C]. VA Tech Blacksburg, USA,1998.
    [4]
    Muszynska A. Partial lateral rotor to stator rubs[J]. I Mech E,1984,C281(84):327-335.
    [5]
    Muszynska A. Rotor-to-stationary element rub-related vibration phenomena in rotating machinery-literature survey[J]. Shock & Vibration Digest,1989,21(3):3-11.
    [6]
    Gelin A, Pugnet J M, Hagopian J D. Dynamic behavior of flexible rotors with active magnet bearings on safety auxiliary bearings[A]. In: Proc of 3rd International Conference on Rotordynamics[C]. Lyon,France,1990,503-508.
    [7]
    方之楚,骆振黄. 质量任意分布下的柔性转子过临界点时的瞬态响应[J]. 固体力学学报,1990,11(1):11-22.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (2432) PDF downloads(682) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return