Running excitation of blades bunches

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00437086" target="_blank" >RIV/61388998:_____/14:00437086 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Running excitation of blades bunches
Original language 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.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
DYMAMESI 2014 : Dynamics of machines and mechanical systems with interactions
ISBN
978-80-87012-54-3
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
45-52
Publisher name
Institute of Thermomechanics AS CR
Place of publication
Praha
Event location
Praha
Event date
Nov 25, 2014
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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