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Structural Engineering and Mechanics
  Volume 2, Number 2, June 1994, pages 157-171

Seismic behavior of fuel assembly for pressurized water reactor
Myung J. Jhung and Won G. Hwang

    A general approach to the dynamic time-history analysis of the reactor core is presented in this paper as a part of the fuel assembly qualification program. Several detailed core models are set up to reflect the placement of the fuel assemblies within the core shroud. Peak horizontal responses are obtained for each model for the motions induced form earthquake. The dynamic responses such as fuel assembly deflected shapes and spacer grid impact loads are carefully investigated. Also, the sensitivity responses are obtained for the earthquake motions and the fuel assembly non-linear response characteristics are discussed.
Key Words
     reactor internals; reactor core; fuel assembly; pressurized water reactor; seismic behavior; operating basis earthquake; safe shutdown earthquake; spacer grid.
Power Reactor Mechanical Engineering, Korea Atomic Energy Research Institute 150 Dukjin-dong, Yusung-ku, Taejon 302-353, Korea
Department of Mechanical Engineering, Chonnam National University
Yongbong-dong 300, Puk-gu, Kwangju 500-757, Korea

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