Modelling of the friction-vibration interactions in reactor core barrel couplings

Authors

  • Vladimír Zeman Faculty of Applied Sciences, University of West Bohemia
  • Zdeněk Hlaváč Faculty of Applied Sciences, University of West Bohemia

DOI:

https://doi.org/10.24132/acm.2018.439

Keywords:

nuclear reactor, nonlinear vibration, couplings with clearances, friction, fretting wear

Abstract

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 respecting friction-vibration interactions at all the key-groove couplings with clearances. The method is applied to VVER 1000/320 type reactor operated in the nuclear power plant Temelín in the Czech Republic.

Author Biography

  • Vladimír Zeman, Faculty of Applied Sciences, University of West Bohemia
    The professional CV of the Associate Editor can be found here.

Downloads

Published

31-Dec-2018

Issue

Vol. 12 No. 2 (2018)

Section

Articles

License

Copyright (c) 2018 Applied and Computational Mechanics

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

“Modelling of the friction-vibration interactions in reactor core barrel couplings” (2018) Applied and Computational Mechanics, 12(2). doi:10.24132/acm.2018.439.