Title: Modelling of the friction-vibration interactions in reactor core barrel couplings
Other Titles: Modelování a vibrační interakce se třením ve vazbách nosného válce reaktoru
Authors: Zeman, Vladimír
Hlaváč, Zdeněk
Citation: ZEMAN, V., HLAVÁČ, Z. Modelling of the friction-vibration interactions in reactor core barrel couplings. Applied and Computational Mechanics, 2018, roč. 12, č. 2, s. 193-212. ISSN 1802-680X.
Issue Date: 2018
Publisher: University of West Bohemia
Document type: článek
URI: 2-s2.0-85067068384
ISSN: 1802-680X
Keywords: jaderný reaktor;nelineární kmitání;vazby s vůlemi;tření;otěr
Keywords in different language: nuclear reactor;nonlinear vibraion;couplings with clearances;friction;fretting wear
Abstract in different language: The key-groove couplings between the lower part of core barrel and reactor pressure vessel in the nuclear VVER-type reactor show assembly side clearances. Vibration of reactor components, caused by coolant pressure pulsations generated by main circulation pumps, produces impulse and friction contact forces in the above mentioned couplings. These forces are used for calculation of power and work of friction forces in the slipping contact surfaces between the key and the groove of the particular couplings and for their fretting wear prediction in dependence on the clearance values. The paper presents an original approach to mathematical modelling and simulation analysis of reactor nonlinear vibrations. The method is applied to VVER 1000/320 type reactor operated in the nuclear power plant Temelín in the Czech Republic.
Rights: © University of West Bohemia in Pilsen
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