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Investigations of Transient Oscillations of Rotors Supported by Magnetorheological Squeeze Film Dampers Using Bilinear Material to Model the Lubricant
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SYSNO ASEP 0451914 Document Type A - Abstract R&D Document Type Není vybrán druh dokumentu Title Investigations of Transient Oscillations of Rotors Supported by Magnetorheological Squeeze Film Dampers Using Bilinear Material to Model the Lubricant Author(s) Zapoměl, Jaroslav (UT-L) RID, ORCID
Kozánek, Jan (UT-L) RID
Ferfecki, P. (CZ)Number of authors 3 Source Title Engineering Mechanics 2015. - Praha : Institute of Theoretical and Applied Mechanics ASCR, v. v. i, 2015 / Náprstek J. ; Fischer C. - ISSN 1805-8248 - ISBN 978-80-86246-42-0 Number of pages 2 s. Publication form Print - P Action Engineering Mechanics 2015 Event date 11.05.2015-14.05.2015 VEvent location Svratka Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords magnetorheological squeeze film damper ; magnetorheological oil ; bilinear material ; rotordynamics. Subject RIV BI - Acoustics R&D Projects GA15-06621S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 Annotation Magnetorheological squeeze film dampers are added to the rotor supports to reduce lateral vibrations of rotating machines with the possibility to control the damping effect. In mathematical models magnetorheological oils are usually represented by Bingham or Herschel-Bulkley theoretical materials. Here the magnetorheological oil is modelled by bilinear material with the yielding shear stress depending on magnetic induction. Its flow curve is continuous which contributes to reducing nonlinear character of the motion equations. The new mathematical model was applied to investigate several operating regimes of rotating machines. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2016
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