About: Two Approaches to the Dynamics of Bladed Disks

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This paper deals with two approaches to the modelling and dynamical analysis of bladed disks in turbines. The basics of modelling methods are explained. The first approach is based on the cyclic symmetry consideration and the second one is characterized by representing the whole system using chosen mode shapes of particular blades or blade bundles. Both approaches have some advantages on the one side and drawbacks on the other side, which are also commented. The approaches are applied to the dynamic analysis of a real bladed disk composed of blades. Specifically, the methods are applied to the calculation of the natural frequencies and mode shapes of the steam turbine bladed disk with blades of length 1060 mm. Part of the shroud is the integral part of the blade. Blades are free at non-rotating bladed disk. Blades of the advanced design are continuously coupled in the zone of the shroud by the blades untwist due to the centrifugal forces acting at turbine rotation. This paper deals with two approaches to the modelling and dynamical analysis of bladed disks in turbines. The basics of modelling methods are explained. The first approach is based on the cyclic symmetry consideration and the second one is characterized by representing the whole system using chosen mode shapes of particular blades or blade bundles. Both approaches have some advantages on the one side and drawbacks on the other side, which are also commented. The approaches are applied to the dynamic analysis of a real bladed disk composed of blades. Specifically, the methods are applied to the calculation of the natural frequencies and mode shapes of the steam turbine bladed disk with blades of length 1060 mm. Part of the shroud is the integral part of the blade. Blades are free at non-rotating bladed disk. Blades of the advanced design are continuously coupled in the zone of the shroud by the blades untwist due to the centrifugal forces acting at turbine rotation. (en)
Title	Two Approaches to the Dynamics of Bladed Disks Two Approaches to the Dynamics of Bladed Disks (en)
skos:prefLabel	Two Approaches to the Dynamics of Bladed Disks Two Approaches to the Dynamics of Bladed Disks (en)
skos:notation	RIV/49777513:23520/14:43923035!RIV15-TA0-23520___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(TE01020068)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Hajžman, Michal
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Západočeská univerzita v Plzni / Fakulta aplikovaných věd
http://linked.open...dnocenehoVysledku	51487
http://linked.open...ai/riv/idVysledku	RIV/49777513:23520/14:43923035
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	dynamics, blade, cyclic symmetry, periodicity, modal analysis, mode shape (en)
http://linked.open.../riv/klicoveSlovo	mode shape periodicity dynamics modal analysis blade cyclic symmetry
http://linked.open...ontrolniKodProRIV	[FDB05FF661E7]
http://linked.open...in/vavai/riv/obor	JR
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of research and experimental development of reliable energy production
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Hajžman, Michal Polach, Pavel
http://localhost/t...ganizacniJednotka	23520

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