About: Running excitation of blades bunches

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Application of additional damping elements or friction connection into blades’ shroud very effectively restricts undesirable vibrations of turbine blades vibrations. The previous investigation of dynamic properties of five-blades-model connected either by a rubber element, by direct Coulomb friction contact or by modified Coulomb friction contact showed very positive results. However, only one type of excitation force vector with one harmonic force acting on the first mass has been used in these studies. Proposed paper will be oriented on the response of the same fiveblades- bunch provided again by means of the same types of dry friction damping connections, but excited by running harmonic force. This type of excitation corresponds better to the real excitation in the steam or gas turbine. Influence of friction forces type, running velocity (depends on ratio of stator and rotor blades numbers), amplitudes of excitation forces, etc. will be analysed and presented. Application of additional damping elements or friction connection into blades’ shroud very effectively restricts undesirable vibrations of turbine blades vibrations. The previous investigation of dynamic properties of five-blades-model connected either by a rubber element, by direct Coulomb friction contact or by modified Coulomb friction contact showed very positive results. However, only one type of excitation force vector with one harmonic force acting on the first mass has been used in these studies. Proposed paper will be oriented on the response of the same fiveblades- bunch provided again by means of the same types of dry friction damping connections, but excited by running harmonic force. This type of excitation corresponds better to the real excitation in the steam or gas turbine. Influence of friction forces type, running velocity (depends on ratio of stator and rotor blades numbers), amplitudes of excitation forces, etc. will be analysed and presented. (en)
Title	Running excitation of blades bunches Running excitation of blades bunches (en)
skos:prefLabel	Running excitation of blades bunches Running excitation of blades bunches (en)
skos:notation	RIV/61388998:_____/14:00437086!RIV15-AV0-61388998
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Pešek, Luděk Půst, Ladislav
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	43571
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/14:00437086
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	damping; dry friction; five-blades-bunch; delayed harmonic excitation (en)
http://linked.open.../riv/klicoveSlovo	delayed harmonic excitation five-blades-bunch damping dry friction
http://linked.open...ontrolniKodProRIV	[4877301F1750]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	DYMAMESI 2014 : Dynamics of machines and mechanical systems with interactions
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Pešek, Luděk Půst, Ladislav
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2014-11-25 (xsd:date)
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Ústav termomechaniky AV ČR
https://schema.org/isbn	978-80-87012-54-3

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