Analysis of operational deflection shapes of the shaker armature near upper frequency limit

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of operational deflection shapes of the shaker armature near upper frequency limit

Popis výsledku v původním jazyce

The paper deals with practical analysis of operational deflection shape of the top surface of the electrodynamic shaker armature near upper frequency limit below main resonance. The vibration test system with maximal sine force of 35 kN has been examinedfor excessive difference of vertical vibration acceleration between the center of circular shaker armature with diameter of 640 mm and its edges. With the control accelerometer in the center of the armature, there was thirty times higher acceleration onthe edges at upper frequency limit of the shaker (2000 Hz). This difference has been firstly examined by contact measurement with piezoelectric accelerometers in certain points and afterwards with single point laser Doppler vibrometer enhanced with galvo-mirror system for the fast scanning of the whole armature surface. With scanning measurement procedure the operational deflection shape of the armature has been evaluated during sine force excitation of the vibration system. Detected de

Název v anglickém jazyce

Analysis of operational deflection shapes of the shaker armature near upper frequency limit

Popis výsledku anglicky

The paper deals with practical analysis of operational deflection shape of the top surface of the electrodynamic shaker armature near upper frequency limit below main resonance. The vibration test system with maximal sine force of 35 kN has been examinedfor excessive difference of vertical vibration acceleration between the center of circular shaker armature with diameter of 640 mm and its edges. With the control accelerometer in the center of the armature, there was thirty times higher acceleration onthe edges at upper frequency limit of the shaker (2000 Hz). This difference has been firstly examined by contact measurement with piezoelectric accelerometers in certain points and afterwards with single point laser Doppler vibrometer enhanced with galvo-mirror system for the fast scanning of the whole armature surface. With scanning measurement procedure the operational deflection shape of the armature has been evaluated during sine force excitation of the vibration system. Detected de

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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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

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 20th International Congress on Sound and Vibration

ISBN

978-616-551-682-2

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

International Institute of Acoustic and Vibration

Místo vydání

USA

Místo konání akce

Bangkok

Datum konání akce

7. 7. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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