Numerical Simulation Study of Hold-down Force of Leaf Spring Hold-down System of Fuel Assembly in Reactor Environment

被引：0

作者：

Wang H. ^{[1
]}

Qin M. ^{[1
]}

Pu Z. ^{[1
]}

Zhu F. ^{[1
]}

Ran R. ^{[1
]}

Miao Y. ^{[1
]}

Yuan P. ^{[1
]}

Liu M. ^{[1
]}

机构：

[1] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2021年 / 42卷

关键词：

Fuel assembly; Hold-down force; Irradiation relaxation; Leaf spring;

D O I：

10.13832/j.jnpe.2021.S2.0093

中图分类号：

学科分类号：

摘要：

In order to accurately predict the hold-down force during the design lifetime of the leaf spring hold-down system of nuclear fuel component, considering the plastic model and creep model of the leaf spring material under fast neutron irradiation, numerical simulation method for the hold-down force of the leaf spring hold-down system in the reactor environment was established based on the fine structure model. By comparing the calculation results with the calculation results of the fuel assembly leaf spring hold-down system analysis software HOFA, the rationality of the numerical simulation method is verified (the maximum error of hold-down force is 8.83%). The influence comparison results show that the maximum hold-down force is reduced by 4.34% when radiation creep is considered; When the cycle length increases, the hold-down force at the end of each cycle increases slightly. Copyright ©2021 Nuclear Power Engineering. All rights reserved.

引用

页码：93 / 98

页数：5

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