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Keywords: stators
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 2012, 134(2): 021018.
Published Online: January 26, 2012
... unbalance condition. This paper describes research on how active control techniques may eliminate this potentially undesirable behavior. A control scheme based on feedback of rotor-stator interaction forces is considered. Model-based conditions for stability of low amplitude whirl, derived using Lyapunov’s...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 2011, 133(2): 021005.
Published Online: March 1, 2011
...Tsuyoshi Inoue; Yukio Ishida; Gao Fei; Hossain Md Zahid In rotating machinery, rubbing occurs between the rotor and the stator, at the seal, between the rotor and the guide and between the rotor and the backup bearing. The backward rub or the partial impact vibration can be avoided by lubricating...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. December 2009, 131(6): 061009.
Published Online: November 19, 2009
...G. Chen In this paper, a new rotor-ball bearing-stator coupling system dynamics model is established for simulating the practical whole aero-engine vibration. The main characteristics of the new model are as follows: (1) the coupling effect between rotor, ball bearing, and stator is fully...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 2009, 131(2): 021002.
Published Online: February 13, 2009
...Lee Gorny; Gary H. Koopmann Fan noise challenges noise control engineers in developing products ranging in scale from small ventilation systems to large turbomachines. The dominant noise source in many axial fans is the tonal noise due to rotor/stator interactions at the fundamental blade passing...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. June 2007, 129(3): 355–362.
Published Online: January 30, 2007
... whirl to whip and the associated precession frequencies of whirl and whip motion. Predictions from Black’s simple Jeffcott-rotor/point-mass stator are cited. This model is extended here to a multimode rotor and stator model with an arbitrary axial location for rotor-stator rubbing. Predictions obtained...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Vib. Acoust. April 2007, 129(2): 260–264.
Published Online: April 20, 2006
...Jun Jiang Dry friction backward whirl is a self-excited vibration state in rotor-to-stator contact systems, by which the rotor is in continuous contact with the stator, slipping continuously on the contact surface and whirling backward at a supersynchronous frequency. To correctly cope the response...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. June 2005, 127(3): 234–246.
Published Online: June 1, 2005
... at numerous transducers on the machine. If the machine has B short bearings, then at any one rotor speed, the dimension of the space spanned by all of the complex vectors of synchronous stator response from the trial runs should be (at most) B . In practice, the dimension of that space is very often larger...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. April 2005, 127(2): 125–138.
Published Online: May 3, 2005
... machine consists of three components: a rotating part (rotor), a stationary part (stator or housing), and multiple bearings. The rotor is assumed axisymmetric and spinning at constant speed. Moreover, the rotor and the housing have arbitrary geometry and complexity. The bearings connecting the rotor...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. December 2005, 127(6): 594–603.
Published Online: December 1, 2004
...Jun Jiang; Heinz Ulbrich Dry whip is an instability of rotor-to-stator contact systems and may lead to a catastrophic failure of rotating machinery. The physical reason for the onset of dry whip in rotor/stator systems with imbalance is not yet well understood. This paper explores the development...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. July 2002, 124(3): 350–358.
Published Online: June 12, 2002
...Go¨tz von Groll; David J. Ewins There are a variety of abnormal running conditions in rotating machinery that lead to rotor/stator interaction dynamics which, in turn, have a range of effects associated with them. One of these effects is steady vibration response at frequencies which are different...
Journal Articles