Modelling of bladed disk with damping effects in slip surfaces of shroud

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F10%3A00503920" target="_blank" >RIV/49777513:23520/10:00503920 - 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

Modelling of bladed disk with damping effects in slip surfaces of shroud

Popis výsledku v původním jazyce

This paper is concentrated on modelling of friction effects in bladed disk of steam turbine, which are realized by means of friction elements placed between blades shroud. The purpose of these elements is to decrease potential high vibrations of bladed disk due to requirement of wide frequency operation range and due to steam flow fluctuations. The model consist of 3D modelled disk and 1D modelled blades. The stiffness coupling matrix and the damping matrix of friction elements effects are obtained by forced vibration of bladed disk, relative movement of adjacent shroud contact areas and by centrifugal forces of friction element.

Název v anglickém jazyce

Modelling of bladed disk with damping effects in slip surfaces of shroud

Popis výsledku anglicky

This paper is concentrated on modelling of friction effects in bladed disk of steam turbine, which are realized by means of friction elements placed between blades shroud. The purpose of these elements is to decrease potential high vibrations of bladed disk due to requirement of wide frequency operation range and due to steam flow fluctuations. The model consist of 3D modelled disk and 1D modelled blades. The stiffness coupling matrix and the damping matrix of friction elements effects are obtained by forced vibration of bladed disk, relative movement of adjacent shroud contact areas and by centrifugal forces of friction element.

Druh

O - Ostatní výsledky

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