Modelling of the nuclear fuel assembly components as a flexible 1D continua with inner and outer impact interactions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F17%3A43950895" target="_blank" >RIV/49777513:23520/17:43950895 - isvavai.cz</a>

Výsledek na webu

<a href="http://multibody2017.cz/wp-content/uploads/2017/12/MBD2017_Conference_Proceedings_online.pdf" target="_blank" >http://multibody2017.cz/wp-content/uploads/2017/12/MBD2017_Conference_Proceedings_online.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modelling of the nuclear fuel assembly components as a flexible 1D continua with inner and outer impact interactions

Popis výsledku v původním jazyce

The paper concerns with the modelling of vibration of nuclear fuel assembly components – fuel rods and the guide thimbles. Mechanical model includes all the relevant nonlinearities to describe the single component motion – contact forces between fuel pellets stack and the cladding or contact between the component and spacer grid cells. The multiscale model is used to estimate the excitation of the single component. Global model of reactor (highest scale model) excited by the pressure pulsations of coolant is used to determine the mounting plates motion. Linearized model of the fuel assembly (middle scale model) is used to determine the motion of surrounding spacer grid cells. Motions of these bodies are used as an input for the numerical simulation of single component motion (lowest scale model). In subsequent analyses, the fretting wear of fuel rod cladding is analysed and dynamical components of lateral deformations of the guide thimbles are estimated.

Název v anglickém jazyce

Modelling of the nuclear fuel assembly components as a flexible 1D continua with inner and outer impact interactions

Popis výsledku anglicky

The paper concerns with the modelling of vibration of nuclear fuel assembly components – fuel rods and the guide thimbles. Mechanical model includes all the relevant nonlinearities to describe the single component motion – contact forces between fuel pellets stack and the cladding or contact between the component and spacer grid cells. The multiscale model is used to estimate the excitation of the single component. Global model of reactor (highest scale model) excited by the pressure pulsations of coolant is used to determine the mounting plates motion. Linearized model of the fuel assembly (middle scale model) is used to determine the motion of surrounding spacer grid cells. Motions of these bodies are used as an input for the numerical simulation of single component motion (lowest scale model). In subsequent analyses, the fretting wear of fuel rod cladding is analysed and dynamical components of lateral deformations of the guide thimbles are estimated.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/LO1506" target="_blank" >LO1506: Podpora udržitelnosti centra NTIS - Nové technologie pro informační společnost</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 8th ECCOMAS Thematic Conference on MULTIBODY DYNAMICS 2017, MBD 2017

ISBN

978-80-01-06174-9

ISSN

2523-9589

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

353-358

Název nakladatele

Nakladatelství ČVUT (CTN), Zikova 1903/4, 166 36 Praha 6 - Dejvice

Místo vydání

Prague

Místo konání akce

Prague, Czech Republic

Datum konání akce

19. 6. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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