OPTIMIZATION OF BLADED DISK PASSIVE DAMPING ELEMENT

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F11%3APU102800" target="_blank" >RIV/00216305:26210/11:PU102800 - isvavai.cz</a>

Výsledek na webu

<a href="http://engmech.cz/2011/im/doc/EM2011_proceedings.pdf" target="_blank" >http://engmech.cz/2011/im/doc/EM2011_proceedings.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

OPTIMIZATION OF BLADED DISK PASSIVE DAMPING ELEMENT

Popis výsledku v původním jazyce

This paper is aimed at reducing vibrations of bladed disk in particular operating state. The damping element used in this contribution is realized by a strap with isosceles trapezoidal cross-section area which is placed in hoop dovetail groove in the blade shrouding. The friction effect between the damping element and the groove side walls is included. Sliding between the contact surfaces leads to the dissipation of energy which causes decreasing of undesirable vibrations. The frictional force is influenced by centrifugal force acting on the damping element. The centrifugal force depends on disk angular speed, mass of the damping element and also on the size of contact area. It is shown that the axial vibrations of bladed disk in particular operating state is influenced by dimensions of the damping element cross-section Dimensional optimization is used to find the optimal dimensions. The process of finding optimal dimensions is described in this paper. The finite element model of blade

Název v anglickém jazyce

OPTIMIZATION OF BLADED DISK PASSIVE DAMPING ELEMENT

Popis výsledku anglicky

This paper is aimed at reducing vibrations of bladed disk in particular operating state. The damping element used in this contribution is realized by a strap with isosceles trapezoidal cross-section area which is placed in hoop dovetail groove in the blade shrouding. The friction effect between the damping element and the groove side walls is included. Sliding between the contact surfaces leads to the dissipation of energy which causes decreasing of undesirable vibrations. The frictional force is influenced by centrifugal force acting on the damping element. The centrifugal force depends on disk angular speed, mass of the damping element and also on the size of contact area. It is shown that the axial vibrations of bladed disk in particular operating state is influenced by dimensions of the damping element cross-section Dimensional optimization is used to find the optimal dimensions. The process of finding optimal dimensions is described in this paper. The finite element model of blade

Druh

D - Stať ve sborníku

CEP obor

JR - Ostatní strojírenství

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

ENGINEERING MECHANICS 2011

ISBN

978-80-87012-33-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

367-370

Název nakladatele

VUT Brno

Místo vydání

Svratka

Místo konání akce

Svratka

Datum konání akce

9. 5. 2011

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

000313492700085