Numerical analysis of dry friction damping effect of tie-boss couplings on three blade bundle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00479401" target="_blank" >RIV/61388998:_____/17:00479401 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1115/DETC2017-67118" target="_blank" >http://dx.doi.org/10.1115/DETC2017-67118</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/DETC2017-67118" target="_blank" >10.1115/DETC2017-67118</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical analysis of dry friction damping effect of tie-boss couplings on three blade bundle

Popis výsledku v původním jazyce

This contribution deals with a design of bladed whel model with tie-boss couplings for numerical and experimental dynamic analysis. Besides modal analysis of the linearized wheel model a non-linear dynamical response of the three blade bundle with friction couplings in the tie-bosses were computed for description of a friction damping. Three-dimensional FE model with friction contacts was developed in the program ANSYS 15.0. The Augmented Lagrangian method was used to compute contact normal pressures and friction stresses. The friction coupling ws modeled by the Isotropic Coulomb´s law. For a description of the friction coefficient, its dependence on relative velocity was considered. The damping ratio of the friction damping was evaluated from the envelope of free vibration attenuations after short harmonic excitation. The first experimental results for validation of the numerical model are discussed at the end.n

Název v anglickém jazyce

Numerical analysis of dry friction damping effect of tie-boss couplings on three blade bundle

Popis výsledku anglicky

This contribution deals with a design of bladed whel model with tie-boss couplings for numerical and experimental dynamic analysis. Besides modal analysis of the linearized wheel model a non-linear dynamical response of the three blade bundle with friction couplings in the tie-bosses were computed for description of a friction damping. Three-dimensional FE model with friction contacts was developed in the program ANSYS 15.0. The Augmented Lagrangian method was used to compute contact normal pressures and friction stresses. The friction coupling ws modeled by the Isotropic Coulomb´s law. For a description of the friction coefficient, its dependence on relative velocity was considered. The damping ratio of the friction damping was evaluated from the envelope of free vibration attenuations after short harmonic excitation. The first experimental results for validation of the numerical model are discussed at the end.n

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA16-04546S" target="_blank" >GA16-04546S: Aeroelastické vazby a dynamické chování rotačně periodických těles</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the ASME Design Engineering Technical Conference

ISBN

978-07-918-5822-6

ISSN

—

e-ISSN

—

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

American Society of Mechanical Engineers (ASME)

Místo vydání

Washington

Místo konání akce

Cleveland, Ohio

Datum konání akce

6. 8. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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