Effect of the controllable support elements lubricated by magnetically sensitive fluids on chaotic and regular vibration of flexible rotors during rubbing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F21%3A10245514" target="_blank" >RIV/61989100:27740/21:10245514 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27230/21:10245514 RIV/61388998:_____/21:00536136

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0094114X20303153" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0094114X20303153</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mechmachtheory.2020.104096" target="_blank" >10.1016/j.mechmachtheory.2020.104096</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of the controllable support elements lubricated by magnetically sensitive fluids on chaotic and regular vibration of flexible rotors during rubbing

Popis výsledku v původním jazyce

The proposed new rotor support element consists of a hydrodynamic bearing and a magnetorheological squeeze film damper. The damping is controlled by the change of resistance against the flow of magnetorheological fluid due to action of a magnetic field generated by electric current powering the electric coils. This paper deals with the study of the effect of the proposed support element on character of the rotor vibration during rubbing when impacts between the disc and the walls of a hole of square shape in the stationary part are induced. The system is excited by the rotor unbalance. The goal of the analysis is to investigate the effect of the applied current generating magnetic field on regularity of the rotor vibration. The results of the simulations show that the character of the vibration depends on speed of the rotor rotation and application of the current of right magnitude can change irregular oscillation into periodic and reduce magnitude of the impact forces. The proposed support element makes it possible to utilize all advantages of hydrodynamic bearings. The control of the damping effect is very simple as the damper can work only in the on/off regime. The performed study contributes to learning more on the design possibilities of suppression of undesirable phenomena induced by the rotor rubbing.

Název v anglickém jazyce

Effect of the controllable support elements lubricated by magnetically sensitive fluids on chaotic and regular vibration of flexible rotors during rubbing

Popis výsledku anglicky

The proposed new rotor support element consists of a hydrodynamic bearing and a magnetorheological squeeze film damper. The damping is controlled by the change of resistance against the flow of magnetorheological fluid due to action of a magnetic field generated by electric current powering the electric coils. This paper deals with the study of the effect of the proposed support element on character of the rotor vibration during rubbing when impacts between the disc and the walls of a hole of square shape in the stationary part are induced. The system is excited by the rotor unbalance. The goal of the analysis is to investigate the effect of the applied current generating magnetic field on regularity of the rotor vibration. The results of the simulations show that the character of the vibration depends on speed of the rotor rotation and application of the current of right magnitude can change irregular oscillation into periodic and reduce magnitude of the impact forces. The proposed support element makes it possible to utilize all advantages of hydrodynamic bearings. The control of the damping effect is very simple as the damper can work only in the on/off regime. The performed study contributes to learning more on the design possibilities of suppression of undesirable phenomena induced by the rotor rubbing.

Druh

J_imp - Článek v periodiku v databázi Web of Science

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)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Mechanism and Machine Theory

ISSN

0094-114X

e-ISSN

—

Svazek periodika

155

Číslo periodika v rámci svazku

JAN

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

000596772200007

EID výsledku v databázi Scopus

2-s2.0-85091675240