中山大学学报（自然科学版）（中英文）2024，Vol.63Issue(2)：95-107,13.DOI:10.13471/j.cnki.acta.snus.2023B010
运行工况下固态堆芯基体的高温力学响应
The high-temperature mechanical response of solid-state core monolith under operating condition
摘要
Abstract
The mechanical properties of heat pipe-cooled reactor which is a preferred core for nuclear reactor batteries at high temperatures needs attention.Taking MegaPower as the object,a thermal-mechanical coupling calculation of the reactor under full power operation condition is carried out using the open source Monte Carlo program(OpenMC)and ANSYS mechanical.The results show:(1)The core monolith generates significant temperature and thermal stress concentration,with peak tempera-tures of 1 023 K for the fuel and 970 K for the monolith,and the highest thermal stress of 49.5 MPa for the monolith;(2)Because of the effect of high-temperature creep,the stress in the monolith decreases significantly,and the stress distribution tends to be uniform.(3)During the core operation,the total equivalent strain of the monolith changes slightly,while the reduction of the equivalent elastic strain and the increase of the equivalent creep strain is almost simultaneous and equal.关键词
固态堆芯/高温/316H不锈钢/蠕变Key words
solid-state reactor core/high temperature/316H stainless steel/creep引用本文复制引用
梁立创,田俊,苏东川,李辉,姜乃斌..运行工况下固态堆芯基体的高温力学响应[J].中山大学学报（自然科学版）（中英文）,2024,63(2):95-107,13.基金项目
Supported by Key Laboratory of Nuclear Reactor System Design Technology(HT-KFKT-24-2021015) （HT-KFKT-24-2021015）
