Thermo-mechanical coupling behavior analysis for a U ? 10Mo/Al monolithic fuel assembly

Xiaoxiao Mao; Xiaobin Jian; Haoyu Wang; Jingyu Zhang; Jibin Zhang; Feng Yan; Hongyang Wei; Shurong Ding; Yuanming Li

doi:https://doi.org/10.1016/j.net.2021.03.003

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자료유형: 학술저널

저자정보: Xiaoxiao Mao (Fudan University) Xiaobin Jian (Fudan University) Haoyu Wang (Nuclear Power Institute of China) Jingyu Zhang (Fudan University) Jibin Zhang (Nuclear Power Institute of China) Feng Yan (Fudan University) Hongyang Wei (Fudan University) Shurong Ding (Fudan University) Yuanming Li (Nuclear Power Institute of China)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제9호

발행연도: 2021.9

수록면: 2,937 - 2,952 (16page)

DOI: https://doi.org/10.1016/j.net.2021.03.003

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A typical three-dimensional finite element model for a fuel assembly is established, which is composedof 16 monolithic Ue10Mo fuel plates and Al alloy frame. The distribution and evolution results oftemperature, displacement and stresses/strains in all the parts are numerically obtained and analyzedwith a self-developed code of FUELTM. The simulation results indicate that (1) the out-of-plane displacementsof Al alloy side plates are mainly attributed to the bending deformations; (2) enhanced outof-plane displacements appear in fuel plates adjacent to the outside Al plates, which results from theoccurred bending deformations due to the applied constraints of outside Al plates; (3) an intenseinteraction of fuel foil with the cladding occurs near the foil edge, which appears more heavily in the fuelplates adjacent to the outside Al plates. The maximum first principal stresses in the fuel foil are similarfor all the fuel plates and appear near the fuel foil edge; while, the through-thickness creep strains of fuelfoil in the fuel plate near the central region of fuel assembly are larger, and the induced creep damagemight weaken the fuel skeleton strength and raise the fuel failure risk.

#U-10Mo/Al monolithic fuel assembly #Thermo-mechanical coupling #Three-dimensional finite element model #Irradiation swelling #Irradiation creep

참고문헌 (5)

참고문헌 신청

M.K. Meyer / 2014 / Irradiation Performance of U-Mo Monolithic Fuel / Nuclear Engineering and Technology 46(2):169~182

Xiaobin Jian / 2019 / A mesoscale stress model for irradiated U – 10Mo monolithic fuels based on evolution of volume fraction/radius/internal pressure of bubbles / Nuclear Engineering and Technology 51(6):1575~1588

Andreas Wanninger / 2018 / Mechanical analysis of the bow deformation of a row of fuel assemblies in a PWR core / Nuclear Engineering and Technology 50(2):297~305

김현길 / 2014 / Drop Impact Analysis of Plate-type Fuel Assembly in Research Reactor / Nuclear Engineering and Technology 46(4):529~540

Y. Zhao / 2016 / Irradiation-induced thermomechanical behavior in ADS composite fuel pellets : mechanism and main influencing factors / J. Therm. Stresses 39(6):630~657

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