Title: Damping of flutter oscillations by dry friction contacts
Authors: Půst, L.
Pešek, L.
Šnábl, P.
Citation: Computational mechanics 2018: book of extended abstracts: 34th conference with international participation, p. 85-86.
Issue Date: 2018
Publisher: Západočeská univerzita v Plzni
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/30820
ISBN: 978-80-261-0819-1
Keywords: lopatky turbíny;chvění;suché tření;výpočetní modelování
Keywords in different language: turbine blades;flutter vibrations;dry friction;computational biomechanics
Abstract in different language: Self-excited flutter vibrations of turbine blades are very dangerous phenomena for the service life of turbines. The various design treatments are therefore applied for suppression of blades� flutter vibrations. The introduction of dry friction elements is one of the very effective methods. The dynamic behavior of a computational model of 30-blades turbine wheel is investigated in the proposed paper. The blades in the rotating cascade are excited by aerodynamic forces arising from the spatially periodical flow of steam through the stator blades cascade. This flow produces both forced vibration and self-excited vibrations - flutter. The application of dry friction elements on reduction of these dangerous vibrations is presented on several examples.
Rights: Copyright © 2018 University of West Bohemia, Plzeň, Czech Republic
Appears in Collections:Computational mechanics 2018
Computational mechanics 2018

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