Název: Linearization of friction effects in vibration of two rotating blades
Autoři: Byrtus, Miroslav
Hajžman, Michal
Zeman, Vladimír
Citace zdrojového dokumentu: Applied and Computational Mechanics. 2013, vol. 7, no. 1, p. 5-22.
Datum vydání: 2013
Nakladatel: University of West Bohemia
Typ dokumentu: article
článek
URI: http://www.kme.zcu.cz/acm/index.php/acm/article/view/90/214
http://hdl.handle.net/11025/6191
ISSN: 2336-1182 (Online)
1802-680X (Print)
Klíčová slova: lopatkový disk;frikce;metoda harmonické rovnováhy;tlumení
Klíčová slova v dalším jazyce: bladed disc;friction;harmonic balance method;damping
Abstrakt: This paper is aimed at modelling of friction effects in blade shrouding which are realized by means of friction elements placed between blades. In order to develop a methodology of modelling, two blades with one friction element in between are considered only. Flexible blades fixed to a rotating disc are discretized by FEM using 1D Rayleigh beam elements derived in rotating space as well as the friction element modelled as a rigid body. The blades and the friction element are connected through two concurrent friction planes, where the friction forces arise on the basis of centrifugal force acting on the friction element. The linearization of friction is performed using the harmonic balance method to determine equivalent damping coefficients in dependence on the amplitudes of relative slip motion between the blades and the friction element. The methodology is applied to a model of two real blades and will be extended for the whole bladed disc with shrouding.
Práva: © 2013 University of West Bohemia. All rights reserved.
Vyskytuje se v kolekcích:Články / Articles (FAV)
Volume 7, number 1 (2013)
Volume 7, number 1 (2013)

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