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논문 기본 정보

자료유형
학술저널
저자정보
Guangliang Yang (School of Nuclear Science and Technology, University of Science and Technology of China) Hailong Liao (School of Nuclear Science and Technology, University of Science and Technology of China) Tao Ding (School of Nuclear Science and Technology, University of Science and Technology of China) Hongli Chen (School of Nuclear Science and Technology, University of Science and Technology of China)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제11호
발행연도
2021.11
수록면
3,723 - 3,740 (18page)
DOI
https://doi.org/10.1016/j.net.2021.05.014

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초록· 키워드

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The harsh conditions in the reactor affect the thermal and mechanical performance of the fuel plateheavily. Some in-pile behaviors, like fission-induced swelling, can cause a large deformation of fuel plateat very high burnup, which may even disturb the flow of coolant. In this research, the emphasis is put onthe thermal expansion, fission-induced swelling, interaction layer (IL) growth, creep of the fuel meat, andplasticity of the cladding for the U3Si2/Al dispersion fuel plate. A detailed model of the fuel meat swellingis developed. Taking these in-pile behaviors into consideration, the three-dimensional large deformationincremental constitutive relations and stress update algorithms have been developed to study itsthermal-mechanical performance under normal conditions using Abaqus. Results have shown that IL caneffectively decrease the thermal conductivity of fuel meat. The high Mises stress region mainly locates atthe interface between fuel meat and cladding, especially around the side edge of the interface. Withirradiation time increasing, the stress in the fuel plate gets larger resulting from the growth of fuel meatswelling but then decreases under the effect of creep deformation. For the cladding, plasticity deformation does not occur within the irradiation time

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