The spacer grid is one of the main structural components in the fuel assembly, which supports the fuel rods<br/> and maintains coolable geometry from an external load. A vibration test and a finite element analysis using<br/> ABAQUS on a d...
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https://www.riss.kr/link?id=A75896473
2002
Korean
550
학술저널
7-12(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
The spacer grid is one of the main structural components in the fuel assembly, which supports the fuel rods<br/> and maintains coolable geometry from an external load. A vibration test and a finite element analysis using<br/> ABAQUS on a d...
The spacer grid is one of the main structural components in the fuel assembly, which supports the fuel rods<br/>
and maintains coolable geometry from an external load. A vibration test and a finite element analysis using<br/>
ABAQUS on a dummy fuel rod continuously supported by Optimized H type(OHT) and New Double<br/>
Plate(NDP) spacer grids are performed to obtain the vibration characteristics such as natural frequencies and<br/>
mode shapes and to verify a finite element model. The results fro m the test and the finite element analysis are<br/>
compared by modal assurance criteria (MAC) values. It is resulted that MACs for the first, the third and the<br/>
fifth mode shapes are relatively good as compared with those of the second and fourth ones. The natural<br/>
frequency differences between two methods as well as the mode comparison results for the rod with OHT<br/>
spacer grid are better than those with NDP spacer grid. It is judged that the FE model for the NDP spacer grid<br/>
spring should be modified to consider the long contact length which actually happen when the spring supports<br/>
the rod.
목차 (Table of Contents)
다중 구속조건을 고려한 격자체 구조물의 충격해석 모델개선
최적화 H형 스프링이 부착된 핵연료 지지격자의 충격해석