弥散型核燃料元件的Eshelby解析分析

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基金项目:

上海自然科学基金(06ZR14009)

国家自然科学基金(10772049,10672042)

Analysis of Dispersion-Type Nuclear Fuel Using Eshelby’s Solution

Department of Mechanics and Engineering Science, FuDan University, Shanghai, 200433, China

摘要: 利用Eshelby问题的模型,在考虑温度场和辐照肿胀的条件下,采用理论分析的方法分析了颗粒的形状以及辐照肿胀对应力状态的影响。研究发现:第一主应力和Von Mises等效应力的最大值出现在颗粒和基体的边界上,它们的具体数值与颗粒形状等因素有关;燃料颗粒的辐照肿胀对第一主应力和Von Mises等效应力有很大的"增强"作用。
- 弥散型核燃料 /
- 可裂变颗粒 /
- Eshelby解 /
- 辐照肿胀
Abstract: Eshelby’s solution was used for the analysis of dispersion-type nuclear fuel,considering the thermal field and irradiation-induced swellings.The impact of particle shape and irradiation-induced swellings on stress field was discussed.The maximum of the first principal stress and Von Mises equivalent stress can be found on the interface between the matrix and the particle,whose value is related with the particle shape and other factors.And the irradiation-induced swellings enhance the first principal stress and Von Mises equivalent stress very strongly.
- Dispersion-type nuclear fuel /
- Fission particle /
- Eshelby’s solution /
- Irradiation-induced swellings.