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

Result code in 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>

Alternative codes found

RIV/61989100:27740/12:86087768

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JR - Other machinery industry

OECD FORD branch

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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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

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

Name of the periodical

Engineering mechanics

ISSN

1802-1484

e-ISSN

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Volume of the periodical

19

Issue of the periodical within the volume

6

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

13

Pages from-to

"419?431"

UT code for WoS article

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EID of the result in the Scopus database

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