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지진 및 냉각재 상실 사고시 핵연료집합체 하단 고정체 응력해석
최기성(Choi Ki-Sung),박남규(Park Nam-Gyu),서정민(Suh Jung-Min),권정택(Kwon Jung-Tack),김규태(Kim Kyu-Tae) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
The bottom nozzle is one of the fuel assembly components. It has provisions for seating and locating the bottom end of fuel assembly on the lower core support structure of reactor and must maintain the structural integrity and transmit the axial and lateral loads at the bottom of fuel assembly to the lower core support structure during seismic and LOCA events. In this paper, one dimensional model and a finite element model for stress analysis of fuel assembly bottom nozzle under seismic and LOCA loading are described and the results of stress analysis are presented.