Reliability analysis of dispersion nuclear fuel elements

Reliability analysis of dispersion nuclear fuel elements
复制标题

弥散核燃料元件的可靠性分析

DOI:
10.1016/j.jnucmat.2007.10.006
复制
发表时间:
2008-03
影响因子:
3.1
通讯作者:
Li, Lin an
Li, Lin an
中科院分区:
工程技术2区
文献类型:
--
作者:
Huo, Yongzhong;Ding, Shurong;Jiang, Xin;Li, Lin an

文献摘要

参考文献

被引文献

相似文献

将弥散型燃料元件视为一种特殊的颗粒复合材料,选取具有代表性的体积元件作为研究对象。通过升温模拟燃料膨胀。采用有限元法对该结构的力学行为进行了大应变弹塑性分析。计算结果表明:裂变膨胀模拟成功;厚度增量随燃耗线性增长;随着燃耗的增加:(1)燃料颗粒处的第一主应力由拉伸应力变为压缩应力,(2)燃料颗粒处的最大米塞斯应力从燃料颗粒中心转移到靠近基体与颗粒界面的位置,基体上最大Mises应力沿着长度(或宽度)方向位于两颗粒之间的中间位置,靠近中平面,最大塑性应变也位于上述区域。
Taking a dispersion fuel element as a special particle composite, the representative volume element is chosen to act as the research object. The fuel swelling is simulated through temperature increase. The large strain elastoplastic analysis is carried out for the mechanical behaviors using FEM. The results indicate that the fission swelling is simulated successfully; the thickness increments grow linearly with burnup; with increasing of burnup: (1) the first principal stresses at fuel particles change from tensile ones to compression ones, (2) the maximum Mises stresses at the particles transfer from the centers of fuel particles to the location close to the interfaces between the matrix and the particles, their values increase with burnup; the maximum Mises stresses at the matrix exist in the middle location between the two particles near the mid-plane along the length (or width) direction, and the maximum plastic strains are also at the above region.
DOI: --
发表时间: 1976
期刊: --
影响因子: --
作者:
D. Olander;Demonstration.
通讯作者: D. Olander;Demonstration.
DOI: 10.1016/j.compstruct.2005.07.003
发表时间: 2007
影响因子: 6.3
作者:
S. Kari;H. Berger;R. Rodríguez‐Ramos;U. Gabbert
通讯作者: S. Kari;H. Berger;R. Rodríguez‐Ramos;U. Gabbert
DOI: 10.2172/7284547
发表时间: 1976-02
期刊: --
影响因子: --
作者:
P. Macdonald;L. Thompson
通讯作者: P. Macdonald;L. Thompson
DOI: 10.1016/0029-5493(94)90240-2
发表时间: 1994-06
影响因子: 1.7
作者:
T. Nakajima;H. Saito;T. Osaka
通讯作者: T. Nakajima;H. Saito;T. Osaka
DOI: 10.1016/s0022-3115(98)00039-7
发表时间: 1998-06
影响因子: 3.1
作者:
I. Zacharie;S. Lansiart;P. Combette;M. Trotabas;M. Coster;M. Groos
通讯作者: I. Zacharie;S. Lansiart;P. Combette;M. Trotabas;M. Coster;M. Groos