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Fracture Simulation of SFR Metallic Fuel Pin using Finite Element Damage Analysis Method
Nuclear Engineering and Technology ( IF 2.7 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.net.2020.08.009
Hyun-Woo Jung , Hyun-Kyu Song , Yun-Jae Kim , Dong-Wook Jerng

Abstract This paper suggests a fracture simulation method for SFR metallic fuel pin under accident condition. Two major failure mechanisms - creep damage and eutectic penetration - are implemented in the suggested method. To simulate damaged element, stress-reduction concept to reduce stiffness of the damaged element is applied. Using the proposed method, the failure size of cladding can be predicted in addition to the failure time and failure site. To verify the suggested method, Whole-pin furnace (WPF) test and TREAT-M test conducted at Argonne National Laboratory (ANL) are simulated. In all cases, predicted results and experimental results are overall in good agreement. Based on the simulation result, the effect of eutectic-penetration depth representing failure behavior on failure size is studied.

中文翻译:

使用有限元损伤分析方法的 SFR 金属燃料棒断裂模拟

摘要 本文提出了一种事故工况下SFR金属燃料棒断裂模拟方法。两种主要的失效机制 - 蠕变损坏和共晶渗透 - 在建议的方法中实现。为了模拟损坏单元,应用了应力减少概念来降低损坏单元的刚度。使用所提出的方法,除了失效时间和失效部位外,还可以预测包层的失效尺寸。为了验证建议的方法,模拟了在阿贡国家实验室 (ANL) 进行的整针炉 (WPF) 测试和 TREAT-M 测试。在所有情况下,预测结果和实验结果总体一致。基于模拟结果,研究了代表失效行为的共晶渗透深度对失效尺寸的影响。
更新日期:2020-08-01
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