Impact vibrations of guide thimbles in nuclear fuel assembly
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F17%3A43930839" target="_blank" >RIV/49777513:23520/17:43930839 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s00419-016-1189-6" target="_blank" >http://dx.doi.org/10.1007/s00419-016-1189-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00419-016-1189-6" target="_blank" >10.1007/s00419-016-1189-6</a>
Alternative languages
Result language
angličtina
Original language name
Impact vibrations of guide thimbles in nuclear fuel assembly
Original language description
In nuclear fuel assemblies of pressurized water reactors, guide thimbles (GTs) secure a safe control rod insertion. The control rod fall into the GT should be as fast as possible to provide prompt reactor shutdown. The GTs are long thin-walled tubes that are dynamically excited by fuel assembly (FA) components motion caused by pressure pulsations of coolant. GTs are embedded in spacer grid cells and sleeve (SL) with radial clearances. Vibration of FA components, caused by the FA support plates motion in the reactor core, possibly generates impact forces between GT and spacer grids. The presented method introduces an original approach to mathematical modelling and simulation analysis of GT nonlinear vibrations respecting impact and friction forces at all the contact points between GT and spacer grids. The dependence of maximal dynamical lateral GT deformations on radial clearances and stiffnesses of spacer grid cells is analysed. The method is applied to GT in the hexagonal type FA used in the VVER-type reactors.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/LO1506" target="_blank" >LO1506: Sustainability support of the centre NTIS - New Technologies for the Information Society</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ARCHIVE OF APPLIED MECHANICS
ISSN
0939-1533
e-ISSN
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Volume of the periodical
87
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
14
Pages from-to
231-244
UT code for WoS article
000394109700005
EID of the result in the Scopus database
2-s2.0-84991087036