Application of Piezofilms for Excitation and Active Damping of Blade Flexural Vibration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F15%3A00443175" target="_blank" >RIV/61388998:_____/15:00443175 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1515/aoa-2015-0008" target="_blank" >http://dx.doi.org/10.1515/aoa-2015-0008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/aoa-2015-0008" target="_blank" >10.1515/aoa-2015-0008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Application of Piezofilms for Excitation and Active Damping of Blade Flexural Vibration

Popis výsledku v původním jazyce

For laboratory tests of the blades, the piezo actuators placed on the blades, unlike electromagnets placed in the stationary space, give a possibility to excite the flexural vibration of the blades within the bladed disk by time continuous forces independently of the rotor revolutions. In addition, the piezo actuators can be also used to control the vibrations of the blade. Therefore, several dynamic experiments of the clamped model blade equipped with PVDF films were performed for the force descriptionof the piezo foils and their behavior as actuators of the blade vibration. The numerical beam models were used for numerical analysis of the vibration suppression effects both by additional parametric excitation and by active damping. The optimal phaseshift of piezo actuator voltage supply was ascertained both for amplitude amplification and suppression. The results contribute to the knowledge of the actuation and active damping of blade vibration by the piezo elements.

Název v anglickém jazyce

Application of Piezofilms for Excitation and Active Damping of Blade Flexural Vibration

Popis výsledku anglicky

For laboratory tests of the blades, the piezo actuators placed on the blades, unlike electromagnets placed in the stationary space, give a possibility to excite the flexural vibration of the blades within the bladed disk by time continuous forces independently of the rotor revolutions. In addition, the piezo actuators can be also used to control the vibrations of the blade. Therefore, several dynamic experiments of the clamped model blade equipped with PVDF films were performed for the force descriptionof the piezo foils and their behavior as actuators of the blade vibration. The numerical beam models were used for numerical analysis of the vibration suppression effects both by additional parametric excitation and by active damping. The optimal phaseshift of piezo actuator voltage supply was ascertained both for amplitude amplification and suppression. The results contribute to the knowledge of the actuation and active damping of blade vibration by the piezo elements.

Druh

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

CEP obor

BI - Akustika a kmity

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Archives of Acoustics

ISSN

0137-5075

e-ISSN

—

Svazek periodika

40

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

11

Strana od-do

59-69

Kód UT WoS článku

000352204600008

EID výsledku v databázi Scopus

2-s2.0-84928254081