Original title: Five-blade bunch with dry friction inter-connection forced by running excitation
Authors: Půst, Ladislav ; Pešek, Luděk ; Radolfová, Alena
Document type: Papers
Conference/Event: Engineering Mechanics 2016 /22./, Svratka (CZ), 2016-05-09 / 2016-05-12
Year: 2016
Language: eng
Abstract: The vibration of five-blade-bunch linked in the shroud by means dry-friction-elements is investigated. Quasi-stationary response curves are used for analysis of dynamic properties of isolated blade-bunches excited by running harmonic forces. This running wave excitation models the real excitation in the steam or gas turbine with different numbers of rotor and stator blades. Relation between the ratio of these blade-numbers and phase delay between neighboring blades is ascertained and the dynamic responses of isolated five-blade bunch are shown and analyzed in this paper. Gained theoretical results can be used for evaluation of data obtained from dynamic measurements on bladed disk.
Keywords: Coulomb dry friction damping; delayed harmonic excitation; five-blade bunch; response curves; running wave
Project no.: GA16-04546S (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics 2016, ISBN 978-80-87012-59-8, ISSN 1805-8248

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0260016

Permalink: http://www.nusl.cz/ntk/nusl-251386


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers