Original title: Stability analysis of the lateral oscillations of a flexibly supported viscoelastic Jeffcott rotor
Authors: Ferfecki, P. ; Zapoměl, Jaroslav ; Kozánek, Jan ; Dekýš, V.
Document type: Papers
Conference/Event: Engineering Mechanics 2016 /22./, Svratka (CZ), 2016-05-09 / 2016-05-12
Year: 2016
Language: eng
Abstract: Material damping has a significant influence on vibrations of flexible rotors and can induce their self excited oscillations. The squeeze film dampers inserted in the rotor supports are frequently used to suppress occurrence of these undesirable operating conditions. Modelling the shaft by means of a Kelvin- Voigt material can arrive at the overestimation of the effect of internal damping on the rotor movement. This was a motivation to develop a procedure based on utilization of the Zener material (standard solid theoretical material) to represent the shaft of a Jeffcott rotor supported by squeeze film dampers. The development and testing of this procedure, the experimental determination of the appropriate material constants, and learning more on the influence of material damping on the stability and vibration attenuation of flexible rotors are the principal contributions of the presented article.
Keywords: Jeffcott rotor; squeeze film dampers; vibration amplitude and stability; Zener material
Project no.: GA15-06621S (CEP)
Host item entry: ENGINEERING MECHANICS 2016, ISBN 978-80-87012-59-8, ISSN 1805-8248

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0260725

Permalink: http://www.nusl.cz/ntk/nusl-253620

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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
 Record created 2016-07-19, last modified 2018-07-30

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