Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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A Non-linear Model for Dynamic Analysis of Reactor Internals

원자로내부구조물의 동적해석을 위한 비선형모델

  • Myung-J.Jhun (Power Reactor Mechanical Engineering, Korea Atomic Energy Research Institute) ;
  • Sang-G.Chang (Power Reactor Mechanical Engineering, Korea Atomic Energy Research Institute) ;
  • Song, Heuy-G. (Power Reactor Mechanical Engineering, Korea Atomic Energy Research Institute)
  • Published : 1993.04.01
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Abstract

A non-linear mathematical model has been developed for the dynamic analysis of the reactor internals. The model includes a lumped mass and stiffness with non-linear members such as gap-spring. As hydrodynamic couplings have also been considered in the model, the effect of fluid/structure interaction between internals components due to their immersion in a confining fluid can be studied for the dynamic response analysis. The reactor internals responses for seismic and pipe break excitations have been calculated for the case of with-and without-hydrodynamic couplings.

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