The Vibration and Forces Control During the Rotor Rubbing by Application of Magnetically Sensitive Fluids Lubricating the Rotor Bearings
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F21%3A10252147" target="_blank" >RIV/61989100:27230/21:10252147 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/21:10252147
Result on the web
<a href="https://link.springer.com/chapter/10.1007/978-3-030-46466-0_17#citeas" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-030-46466-0_17#citeas</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-030-46466-0_17" target="_blank" >10.1007/978-3-030-46466-0_17</a>
Alternative languages
Result language
angličtina
Original language name
The Vibration and Forces Control During the Rotor Rubbing by Application of Magnetically Sensitive Fluids Lubricating the Rotor Bearings
Original language description
To achieve optimum performance of rotating machines damping in the rotor supports must be adaptable to the current operating speed. This arrived at a proposal of a new design of a coupling element that consists of a hydrodynamic bearing inserted into a controllable squeeze film damper. This paper deals with its effect on the behavior of a flexible rotor during rotor rubbing. Computer simulations were applied to carry out these investigations. The research is focused on minimizing the amplitude of the rotor vibration and magnitude of the force transmitted to the stationary part and of the impact forces induced by the disc collisions with the stationary part. The squeeze film bearing is lubricated by magnetically sensitive oil. The change of magnetic induction in the lubricating layer changes resistance against the oil flow and thus controls the damping force. In the computational model, the rotor is represented by a Jeffcott one. The pressure distribution in the thin oil layers is described by the Reynolds equations. The one related to the magnetically sensitive lubricant has been adapted to bilinear material. The contact stiffness and material damping in the vicinity of the impact point are considered as linear and the friction as of a Coulomb type. The main advantages of the studied technological solution are that the proposed support element makes it possible to reduce the forces transmitted to the stationary part, to reduce amplitude of the rotor vibration, and to utilize all advantages of hydrodynamic bearings. In addition, the control is very simple as the controller can work only in the on/off regime.
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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Vibration Engineering for a Sustainable Future
ISBN
978-3-030-46466-0
Number of pages of the result
7
Pages from-to
121-127
Number of pages of the book
402
Publisher name
Springer Verlag
Place of publication
Cham
UT code for WoS chapter
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