Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F18%3A10240253" target="_blank" >RIV/61989100:27230/18:10240253 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27740/18:10240253 RIV/00216305:26210/18:PU127505

Výsledek na webu

<a href="https://www.matec-conferences.org/articles/matecconf/abs/2018/16/matecconf_mms2018_08001/matecconf_mms2018_08001.html" target="_blank" >https://www.matec-conferences.org/articles/matecconf/abs/2018/16/matecconf_mms2018_08001/matecconf_mms2018_08001.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/matecconf/201815708001" target="_blank" >10.1051/matecconf/201815708001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper

Popis výsledku v původním jazyce

Technological solution, frequently used to suppress vibrations in rotating machines, consists in adding damping devices between the rotor and its frame. This is enabled by dampers working on the principle of a squeezing thin classical or magnetorheological fluid film. The Navier-Stokes equations, Reynolds equation, and modified Navier-Stokes equations are used to determine the pressure distribution in the thin fluid film. The damping and stiffness coefficients are computed by the developed procedure presented in this paper. The proposed computational approach is based on the perturbation of the synchronous circular whirling motion. The carried-out computational simulations show that the investigated mathematical models of the squeeze film damper and magnetorheological squeeze film damper allowed computation of the damping and stiffness coefficients. It has been found that the stiffness coefficients computed by the proposed mathematical models may be different. (C) 2018 The Authors, published by EDP Sciences.

Název v anglickém jazyce

Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper

Popis výsledku anglicky

Technological solution, frequently used to suppress vibrations in rotating machines, consists in adding damping devices between the rotor and its frame. This is enabled by dampers working on the principle of a squeezing thin classical or magnetorheological fluid film. The Navier-Stokes equations, Reynolds equation, and modified Navier-Stokes equations are used to determine the pressure distribution in the thin fluid film. The damping and stiffness coefficients are computed by the developed procedure presented in this paper. The proposed computational approach is based on the perturbation of the synchronous circular whirling motion. The carried-out computational simulations show that the investigated mathematical models of the squeeze film damper and magnetorheological squeeze film damper allowed computation of the damping and stiffness coefficients. It has been found that the stiffness coefficients computed by the proposed mathematical models may be different. (C) 2018 The Authors, published by EDP Sciences.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

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>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

MATEC Web of Conferences. Volume 157

ISBN

—

ISSN

2261-236X

e-ISSN

neuvedeno

Počet stran výsledku

12

Strana od-do

—

Název nakladatele

EDP Sciences

Místo vydání

Paříž

Místo konání akce

Sklené Teplice

Datum konání akce

5. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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