Original title: Procedure for investigation of the equilibrium position stability and for the nonlinear respose of the rotor supported by fluid film bearings and having a disc submerged in inviscous, inwettable liquid
Translated title: Postup pro zkoumání stability rovnovážné polohy a nelineární odezvy rotoru uloženého v kapalinných ložiskách a majícím kotouč ponořený v neviskózní, nesmáčivé kapalině
Authors: Zapoměl, Jaroslav
Document type: Papers
Conference/Event: Engineering Mechanics 2008, Svratka (CZ), 2008-05-12 / 2008-05-15
Year: 2008
Language: eng
Abstract: [eng] [cze]
Lateral vibration of rotors is significantly influenced by their supports and by their interaction with the medium in the ambient space. If the disc of the rotor is submerged in a liquid and if it vibrates, the pressure field is induced and the liquid acts by a force on the wall of the disc. It is assumed that the disc performs oscillations only with small amplitudes and it enables to describe the produced pressure field by a Laplace's equation and by the relation for the boundary conditions. The liquid is inwettable and it means that it does not lean to the disc surface and therefore no tangential forces acting on the disc are produced. The resulting force is obtained by integration of the pressure distribution around the circumference and along the height of the submerged part of the disc. Its components are proportional to the disc accelerations and it implies that the negatively taken coefficients of proportionality can be considered as additional masses. Článek se zabývá matematickým modelováním interakce pružného rotoru uloženého v hydrodynamických ložiskách a ideální kapaliny, v níž je kotouč rotoru ponořen.
Keywords: fluid-structure interaction; response and stability; rotors
Project no.: CEZ:AV0Z20760514 (CEP), GA101/06/0063 (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics 2008, ISBN 978-80-87012-11-6

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/11104/0167202

Permalink: http://www.nusl.cz/ntk/nusl-39614


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers