Title: Modelling and modal properties of nuclear fuel assembly
Authors: Zeman, Vladimír
Hlaváč, Zdeněk
Citation: Applied and Computational Mechanics. 2011, vol. 5, no. 2, p. 256-266.
Issue Date: 2011
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/index.php/acm/article/view/159/132
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: palivový článek;modelování vibrací;modální hodnoty;metoda dekompozice
Keywords in different language: fuel assembly;modelling of vibrations;modal values;decomposition method
Abstract: The paper deals with the modelling and modal analysis of the hexagonal type nuclear fuel assembly. This very complicated mechanical system is created from the many beam type components shaped into spacer grids. The cyclic and central symmetry of the fuel rod package and load-bearing skeleton is advantageous for the fuel assembly decomposition into six identical revolved fuel rod segments, centre tube and skeleton linked by several spacer grids in horizontal planes. The derived mathematical model is used for the modal analysis of the Russian TVSA-T fuel assembly and validated in terms of experimentally determined natural frequencies, modes and static deformations caused by lateral force and torsional couple of forces. The presented model is the first necessary step for modelling of the nuclear fuel assembly vibration caused by different sources of excitation during the nuclear reactor VVER type operation.
Rights: © 2011 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 5, number 2 (2011)
Články / Articles (KME)
Volume 5, number 2 (2011)

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