Dynamics of model bladed disc with friction elements for vibration suppression

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F10%3A00348470" target="_blank" >RIV/61388998:_____/10:00348470 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dynamics of model bladed disc with friction elements for vibration suppression

Popis výsledku v původním jazyce

The model of the test bladed wheel with friction elements was numerically and experimentally investigated for vibration suppression evaluation. The dynamics and contact problem of blade couple with the friction element was modeled by a 3D FE model. The development of micro-slips and macro-slips were observed including time variant contact states at the resonant vibration of the blade couple. The results show non-linear effect of the friction coupling on the dynamics of the couple. For experimental investigation two bunches of blades with friction elements implemented into the bladed disk led to a wheel mistuning with double periodicity. Electromagnetic excitation with sweep excitation was used for the wheel excitation under revolution. Optimal excitation frequency ranges were ascertained for evaluation of frequency response functions (FRF) and identification of split wheel eigenvalues. The damping ratios were used for assessment of the efficiency of dry friction of the elements on the

Název v anglickém jazyce

Dynamics of model bladed disc with friction elements for vibration suppression

Popis výsledku anglicky

The model of the test bladed wheel with friction elements was numerically and experimentally investigated for vibration suppression evaluation. The dynamics and contact problem of blade couple with the friction element was modeled by a 3D FE model. The development of micro-slips and macro-slips were observed including time variant contact states at the resonant vibration of the blade couple. The results show non-linear effect of the friction coupling on the dynamics of the couple. For experimental investigation two bunches of blades with friction elements implemented into the bladed disk led to a wheel mistuning with double periodicity. Electromagnetic excitation with sweep excitation was used for the wheel excitation under revolution. Optimal excitation frequency ranges were ascertained for evaluation of frequency response functions (FRF) and identification of split wheel eigenvalues. The damping ratios were used for assessment of the efficiency of dry friction of the elements on the

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F09%2F1166" target="_blank" >GA101/09/1166: Výzkum dynamických vlastností a optimalizace složitých rotujících soustav s nelineárními vazbami a materiály o vysokém útlumu</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název statě ve sborníku

IFToMM Rotordynamics 2010

ISBN

978-89-5708-187-7

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

Seoul National University

Místo vydání

Seoul

Místo konání akce

Seoul

Datum konání akce

12. 9. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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