摘要
为实现锆基弥散微封装燃料(M3燃料)的优化设计,进一步提升其在轻水堆(LWR)运行环境下的可靠性,需对其在稳态运行条件下的失效机理进行研究。本研究借助于ABAQUS有限元软件,通过二次开发建立了M3燃料的辐照-热-力耦合性能三维数值模拟分析方法,并基于此分析方法对M3燃料在稳态运行条件下的失效机理进行了研究。研究结果表明,稳态运行期间M3燃料的失效主要以辐照初期内致密热解碳层(IPyC层)的失效、辐照中后期疏松热解碳层(Buffer层)与IPyC层分开再接触后导致的碳化硅层失效为主。该研究结果可为后续M3燃料的优化设计提供指导。
In order to optimize the design of M3 fuel and further improve its reliability in LWR environment, it is necessary to research its failure mechanism under steady-state operation conditions. Based on the ABAQUS software, a 3 D numerical simulation analysis method for the irradiation-thermal-mechanical coupling behavior of M3 fuel was established by the way of secondary development. With the help of this established analytical method, the failure mechanism of M3 fuel under steady-state operation conditions was carried out. According to the research results, during the steady-state operation conditions, the failure mechanism of M3 fuel is mainly dominated by the failure of IPyC layer in the initial irradiation and the failure of SiC layer caused by the contact of Buffer layer and IPy C layer. This research results could provide guidance for the optimization design of M3 fuel.
作者
李垣明
唐昌兵
余红星
辛勇
陈平
周毅
Li Yuanming;Tang Changbing;Yu Hongxing;Xin Yong;Chen Ping;Zhou Yi(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2019年第1期156-161,共6页
Nuclear Power Engineering
关键词
M3燃料
失效机理
LWR
辐照-热-力耦合
M3 fuel
Failure mechanism
LWR
Irradiation-thermal-mechanical coupling
