Controllable magnetically sensitive rotor support element for reducing oscillation and force transmission
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F19%3A10243606" target="_blank" >RIV/61989100:27230/19:10243606 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/19:10243606
Result on the web
<a href="https://link.springer.com/chapter/10.1007/978-3-030-20131-9_334" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-030-20131-9_334</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-030-20131-9_334" target="_blank" >10.1007/978-3-030-20131-9_334</a>
Alternative languages
Result language
angličtina
Original language name
Controllable magnetically sensitive rotor support element for reducing oscillation and force transmission
Original language description
The hydrodynamic bearings are used to support rotors for their high loading capacity, simple design, and quiet operation. To increase stability limit of lateral vibration of rotating machines, the hydrodynamic bearings are combined with classical squeeze film dampers. This technological solution is widely used to support rotors of high speed turbomachinery. The amount of damping in the rotor supports influences suppression of the vibration amplitude and magnitude of the force transmitted between the rotor and its stationary part. A simple dynamical analysis shows that to achieve optimum performance of the damping elements of rotors working in a wide range of operating speeds, their damping effect must be adaptable to the current angular velocity. This is possible if the classical squeeze film dampers are replaced with controllable damping devices. The presented article deals with a proposal and investigation of a new type of such support element that is a combination of a hydrodynamic bearing and of a magnetorheological squeeze film damper and with its application for rigid rotors. The computational simulations show that higher damping is needed for lower rotor velocities and lower one for higher speeds to achieve optimum compromise between the vibration attenuation and minimization of the force transmitted between the rotor and the stationary part. The results also show that damping in the rotor supports has almost no influence on the rotor oscillation amplitude for higher angular velocity. The proposal of the novel controllable rotor support element, the development of its mathematical model, and learning more on its effect on vibration attenuation and on the force transmission are the principal contributions of the research work carried out. (C) 2019, Springer Nature Switzerland AG.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Mechanisms and machine science. Volume 8
ISBN
978-94-007-5124-8
Number of pages of the result
10
Pages from-to
3385-3394
Number of pages of the book
4248
Publisher name
Springer
Place of publication
Vídeň
UT code for WoS chapter
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