| Attributes | Values |
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| rdf:type
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| Description
| - Lateral vibration of rotors can be significantly reduced by inserting damping devices between the shaft and the casing. To achieve optimum compromise between attenuation of the oscillation amplitude and magnitude of the forces transmitted through the coupling elements between the rotor and its housing the damping effect must be controllable. This is enabled by application of the dampers lubricated by magnetorheological fluid. Their damping force can be controlled by the change of intensity of the magnetic field in the lubricating layer. To investigate lateral vibration of rotors supported by short magnetorheological squeeze film dampers using computational simulations, a new numerical procedure has been developed and is presented in this paper. The rotors are excited by centrifugal forces produced by the discs unbalances and by oscillation of their foundation plate. Setting the computational model required to formulate the governing equations, to develop the methodology for determination of the relation between the electric current, the source of the magnetic field, and the yield shear stress of the working fluid, to derive the relation for the pressure distribution in the lubricating film and to calculate components of the damping force. The magnetorheological liquid was implemented into the mathematical model by means of Bingham material. The pressure distribution in the oil film was described by the Reynolds equation modified for the case of Bingham fluid. The results of the performed computer simulations showed that the attenuation of vibration of rotors using the magnetorheological dampers was most efficient if they operated close to the critical speeds.
- Lateral vibration of rotors can be significantly reduced by inserting damping devices between the shaft and the casing. To achieve optimum compromise between attenuation of the oscillation amplitude and magnitude of the forces transmitted through the coupling elements between the rotor and its housing the damping effect must be controllable. This is enabled by application of the dampers lubricated by magnetorheological fluid. Their damping force can be controlled by the change of intensity of the magnetic field in the lubricating layer. To investigate lateral vibration of rotors supported by short magnetorheological squeeze film dampers using computational simulations, a new numerical procedure has been developed and is presented in this paper. The rotors are excited by centrifugal forces produced by the discs unbalances and by oscillation of their foundation plate. Setting the computational model required to formulate the governing equations, to develop the methodology for determination of the relation between the electric current, the source of the magnetic field, and the yield shear stress of the working fluid, to derive the relation for the pressure distribution in the lubricating film and to calculate components of the damping force. The magnetorheological liquid was implemented into the mathematical model by means of Bingham material. The pressure distribution in the oil film was described by the Reynolds equation modified for the case of Bingham fluid. The results of the performed computer simulations showed that the attenuation of vibration of rotors using the magnetorheological dampers was most efficient if they operated close to the critical speeds. (en)
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| Title
| - Application of controllable magnetorheological dampers for reducing lateral vibration of rotors excited by a base plate oscillation - a computational investigation
- Application of controllable magnetorheological dampers for reducing lateral vibration of rotors excited by a base plate oscillation - a computational investigation (en)
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| skos:prefLabel
| - Application of controllable magnetorheological dampers for reducing lateral vibration of rotors excited by a base plate oscillation - a computational investigation
- Application of controllable magnetorheological dampers for reducing lateral vibration of rotors excited by a base plate oscillation - a computational investigation (en)
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| skos:notation
| - RIV/61989100:27230/11:86079827!RIV12-GA0-27230___
|
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(GAP101/10/0209), Z(MSM6198910027)
|
| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
| |
| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27230/11:86079827
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - controllable magnetorheological dampers; rotors (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...v/mistoKonaniAkce
| |
| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Schwingungen in Rotierenden Maschinen : Kurzfassungen
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Ferfecki, Petr
- Zapoměl, Jaroslav
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| http://linked.open...vavai/riv/typAkce
| |
| http://linked.open.../riv/zahajeniAkce
| |
| http://linked.open...n/vavai/riv/zamer
| |
| number of pages
| |
| http://purl.org/ne...btex#hasPublisher
| - Technische Universitat Darmstadt
|
| https://schema.org/isbn
| |
| http://localhost/t...ganizacniJednotka
| |
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