Computational Model for the Calculation of Natural Vibration Characteristics of a Turbine Bladed Disk
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F23%3A10001576" target="_blank" >RIV/47718684:_____/23:10001576 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/chapter/10.1007/978-3-031-45705-0_81" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-031-45705-0_81</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Computational Model for the Calculation of Natural Vibration Characteristics of a Turbine Bladed Disk
Original language description
Bladed disks are structural components of various types of rotating machines. The presented computational method for calculating natural vibration characteristics is based on the cyclic symmetry of structures and is applied to the calculation of natural frequencies and mode shapes of the steam turbine bladed disk with the LSB 54" blades. Blades of an advanced design are continuously coupled in the zone of a shroud and the tie-boss zone by the blades' untwist caused by the action of centrifugal forces at the turbine rotation. The calculated value of the natural frequencies associated with the mode shapes with zero nodal diameters at turbine operational speed appears to be problematic compared to the measured ones. The originally created computational model of the bladed disk is suitable for the calculation of natural frequencies and mode shapes with arbitrary numbers of nodal diameters, zero nodal diameters apart. The paper deals with searching for the approach to the creation of a new model of the steam turbine bladed disk with blades with continuous binding that would improve the compliance of the natural frequencies associated with the mode shapes with zero nodal diameters with the measured ones.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Mechanisms and Machine Science, Vol. 147
ISBN
978-3-031-45704-3
ISSN
2211-0984
e-ISSN
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Number of pages
11
Pages from-to
835-845
Publisher name
Springer Science and Business Media B.V.
Place of publication
neuveden
Event location
Tokyo
Event date
Nov 5, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000276388000134