Use of cyclic symmetry properties in vibration analysis of bladed disks with friction contacts between blades
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F14%3A43923936" target="_blank" >RIV/49777513:23640/14:43923936 - isvavai.cz</a>
Alternative codes found
RIV/47718684:_____/14:#0000570
Result on the web
<a href="http://dx.doi.org/10.1016/j.proeng.2014.12.122" target="_blank" >http://dx.doi.org/10.1016/j.proeng.2014.12.122</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.proeng.2014.12.122" target="_blank" >10.1016/j.proeng.2014.12.122</a>
Alternative languages
Result language
angličtina
Original language name
Use of cyclic symmetry properties in vibration analysis of bladed disks with friction contacts between blades
Original language description
The development of steam turbine's blades is closely related to the computer modelling of their vibrations. In this work, a numeric method that (i) implements the calculation of nonlinear vibrations (ii) makes use of the cyclic symmetry of the bladed disk and (iii) models structural contact elements between blades is presented. The cyclic symmetry properties of the bladed disk are used for the calculations of its natural frequencies and mode shapes, then, these are employed in the analysis of its nonlinear vibrations. The contact elements reinforce the bladed disk and act as friction dampers in case of its exceeding excitation. Contact areas between blades are modeled via coupling elements implementing dry Coulomb friction. The method is demonstrated on the particular case of the bladed disk equipped with the LSB48 blades and excited by travelling-wave of two nodal diameters. Finally, the accuracy of the mathematical model and the concept of a contact stiffness are discussed.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JR - Other machinery industry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/TE01020068" target="_blank" >TE01020068: Centre of research and experimental development of reliable energy production</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Procedia Engineering
ISBN
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ISSN
1877-7058
e-ISSN
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Number of pages
10
Pages from-to
500-509
Publisher name
Elsevier B.V.
Place of publication
Amsterdam
Event location
Vysoké Tatry, Slovensko
Event date
Nov 25, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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