原子能科学技术2017，Vol.51Issue(11)：2062-2068,7.DOI:10.7538/yzk.2017.youxian.0308
UMo/Al弥散燃料板内裂变气体肿胀的静压效应研究
Hydrostatic Pressure Effect of Fission Gas Swelling in UMo/Al Dispersion Fuel Plate
摘要
Abstract
The calculations of fission gas swelling and hydrostatic pressure in the nuclear fuel were coupled with each other .With the important irradiation creep also considered , the user subroutine was programmed to define its complex mechanical constitutive rela-tion .With the user subroutines of defining all the materials introduced into ABAQUS , the computational method was developed for simulating the meso-scale irradiation-induced thermo-mechanical coupling behavior in a UMo/Al dispersion fuel plate ,and the hydrostatic pressure effect of the fission gas swelling was analyzed .Comparing the calculated results without considering the hydrostatic pressure effect ,the results with the hydrostatic pressure effect show that the irradiation swelling strain in the fuel parti-cles reduces remarkably ,the highest temperature decreases ,the mechanical interaction between the fuel particles and the matrix is weakened ,and the equivalent creep strains in the fuel particles decrease together with the decrease of the maximum Mises stress and the first principal stress in the matrix .关键词
UMo/Al弥散燃料板/裂变气体肿胀/静压效应/辐照蠕变/热力耦合/有限元法Key words
between the fuel particles and the matrix is weakened/and the equivalent creep strains in the fuel particles decrease together with the decrease of the maximum Mises stress and the first principal stress in the matrix分类
能源科技引用本文复制引用
田旭,孔祥喆,严峰,丁淑蓉..UMo/Al弥散燃料板内裂变气体肿胀的静压效应研究[J].原子能科学技术,2017,51(11):2062-2068,7.基金项目
国家自然科学基金资助项目(11572091) （11572091）
国家重点研发计划资助项目(2016YFB0700103) （2016YFB0700103）
