Linearized response of imbalanced rotors supported by short journal bearings with a central deep groove taking into account sucking the ambient air

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F05%3A00011802" target="_blank" >RIV/61989100:27230/05:00011802 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Linearized response of imbalanced rotors supported by short journal bearings with a central deep groove taking into account sucking the ambient air

Original language description

In bearings whose parameters make possible to consider them as short the flow of the lubricant in the circumferential direction produced by the pressure gradient is negligible. If pressure at the outer edge of the oil film drops below the magnitude of pressure in the ambient space, the air starts to enter into the bearing gap. In computational models it is assumed that at the edge of the oil film the flow in the circumferential direction is equal to the flow in the axial one so that no oil flows betweenthe full film region and the area filled with ambient air. In regions where a vapour cavitation occurs a constant pressure is assumed. Lateral vibration of a rotor supported by fluid film bearings is described by a nonlinear equation of motion. If magnitude of the displacement from the equilibrium position is small, the equation of motion can be linearized and determination of the steady-state response results in solving a set of linear algebraic equations.

Czech name

Linearizovaná odezva nevyvážených rotorů uložených v krátkých hydrodynamických ložiskách s hlubokou středovou drážkou s uvážením sání okolního vzduchu.

Czech description

Článek se zabývá linearizovanou odezvou rotoru uloženého v hydrodynamických ložiskách s uvážením vnikání vzduchu do ložiskové mezery. Stanovení hranice mezi neporušeným filmem a vzduchovou obklastí vede k řešení diferenciální rovnice prvního řádu.

Type

D - Article in proceedings

CEP classification

JR - Other machinery industry

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2005

Confidentiality

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

Article name in the collection

International scientific conference held on the 55th anniversary of founding the Faculty of Mechanical Engineering, Session 8 - Applied Mechanics

ISBN

80-248-0889-7

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

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Publisher name

VŠB - Technická univerzita Ostrava

Place of publication

Ostrava

Event location

Ostrava, Česká republika

Event date

Sep 7, 2005

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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