Reducing excessive vibration of rigid rotors mounted with hydrodynamic bearings by controlled excitation of the rotor supports

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F12%3A86087768" target="_blank" >RIV/61989100:27230/12:86087768 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27740/12:86087768

Výsledek na webu

<a href="http://www.engineeringmechanics.cz/pdf/19_6_419.pdf" target="_blank" >http://www.engineeringmechanics.cz/pdf/19_6_419.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Reducing excessive vibration of rigid rotors mounted with hydrodynamic bearings by controlled excitation of the rotor supports

Popis výsledku v původním jazyce

The flexible supports make it possible to decrease the forces transmitted between the working machines and their foundations. At rotating machinery, the hydrodynamic bearings exhibiting compliance and considerable damping together with high load capacityare often used for this purpose. Nevertheless, on certain operating conditions, the hydraulic forces produced in the thin oil film can destabilize the rotor equilibrium position, which consequently leads to development of the rotor self-excited vibration of large amplitude. There are several ways how to increase the critical speed of the rotor rotation at which the self-excited vibration starts. Recently, the attention was focused on increasing damping in the rotor supports or on modification of the bearings geometry. At present time there are available many active control devices working on various physical principles. In this paper the research of the concept based on controlled kinematic excitation of the bearings shells is carried

Název v anglickém jazyce

Reducing excessive vibration of rigid rotors mounted with hydrodynamic bearings by controlled excitation of the rotor supports

Popis výsledku anglicky

The flexible supports make it possible to decrease the forces transmitted between the working machines and their foundations. At rotating machinery, the hydrodynamic bearings exhibiting compliance and considerable damping together with high load capacityare often used for this purpose. Nevertheless, on certain operating conditions, the hydraulic forces produced in the thin oil film can destabilize the rotor equilibrium position, which consequently leads to development of the rotor self-excited vibration of large amplitude. There are several ways how to increase the critical speed of the rotor rotation at which the self-excited vibration starts. Recently, the attention was focused on increasing damping in the rotor supports or on modification of the bearings geometry. At present time there are available many active control devices working on various physical principles. In this paper the research of the concept based on controlled kinematic excitation of the bearings shells is carried

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JR - Ostatní strojírenství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Engineering mechanics

ISSN

1802-1484

e-ISSN

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Svazek periodika

19

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

13

Strana od-do

"419?431"

Kód UT WoS článku

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EID výsledku v databázi Scopus

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