A COMPUTATIONAL ANALYSIS OF THE STEADY STATE LATERAL VIBRATION OF A FLEXIBLY SUPPORTED RIGID UNBALANCED ROTOR ATTENUATED BY SQUEEZING THE THIN FILMS OF CLASSICAL AND MAGNETORHEOLOGICAL LIQUIDS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F11%3A86079748" target="_blank" >RIV/61989100:27230/11:86079748 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A COMPUTATIONAL ANALYSIS OF THE STEADY STATE LATERAL VIBRATION OF A FLEXIBLY SUPPORTED RIGID UNBALANCED ROTOR ATTENUATED BY SQUEEZING THE THIN FILMS OF CLASSICAL AND MAGNETORHEOLOGICAL LIQUIDS

Popis výsledku v původním jazyce

The vibration amplitude of rotors excited by imbalance can be significantly reduced if damping devices are inserted between the rotor and its stationary part. To achieve their optimum performance, the damping effect must be controllable. For this purposea new semiactive damping element has been proposed. It works on the principle of squeezing two concentric lubricating films formed by classical and magnetorheological liquids. In the mathematical model they are represented by newtonian and Bingham materials respectively. The damping effect is controlled by the change of intensity of the magnetic field generated by electric current. The rotor is assumed to be absolutely rigid and is coupled with the stationary part by spring elements. Its vibration is governed by nonlinear equations of motion whose steady state solution is obtained by application of a collocation method. The newly proposed semiactive damping element minimizes amplitude of the rotor vibration.

Název v anglickém jazyce

A COMPUTATIONAL ANALYSIS OF THE STEADY STATE LATERAL VIBRATION OF A FLEXIBLY SUPPORTED RIGID UNBALANCED ROTOR ATTENUATED BY SQUEEZING THE THIN FILMS OF CLASSICAL AND MAGNETORHEOLOGICAL LIQUIDS

Popis výsledku anglicky

The vibration amplitude of rotors excited by imbalance can be significantly reduced if damping devices are inserted between the rotor and its stationary part. To achieve their optimum performance, the damping effect must be controllable. For this purposea new semiactive damping element has been proposed. It works on the principle of squeezing two concentric lubricating films formed by classical and magnetorheological liquids. In the mathematical model they are represented by newtonian and Bingham materials respectively. The damping effect is controlled by the change of intensity of the magnetic field generated by electric current. The rotor is assumed to be absolutely rigid and is coupled with the stationary part by spring elements. Its vibration is governed by nonlinear equations of motion whose steady state solution is obtained by application of a collocation method. The newly proposed semiactive damping element minimizes amplitude of the rotor vibration.

Druh

D - Stať ve sborníku

CEP obor

JR - Ostatní strojírenství

OECD FORD obor

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Projekt

<a href="/cs/project/GAP101%2F10%2F0209" target="_blank" >GAP101/10/0209: Výzkum a modelování vlivu řízení meze tečení magnetoreologické kapaliny v tenkém mazacím filmu na kmitání rotorů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Engineering Mechanics 2011

ISBN

978-80-87012-33-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

679-682

Název nakladatele

Akademie věd ČR - Institut termomechaniky

Místo vydání

Praha

Místo konání akce

Svratka

Datum konání akce

9. 5. 2011

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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