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

Wang Haoyu; Qin Mian; Pu Zengping; Zhu Fawen; Ran Renjie; Miao Yifei; Yuan Pan; Liu Menglong

doi:10.13832/j.jnpe.2021.S2.0093

Volume 42 Issue S2

Dec. 2021

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Article Navigation > Nuclear Power Engineering > 2021 > 42(S2): 93-98

Wang Haoyu, Qin Mian, Pu Zengping, Zhu Fawen, Ran Renjie, Miao Yifei, Yuan Pan, Liu Menglong. Numerical Simulation Study of Hold-down Force of Leaf Spring Hold-down System of Fuel Assembly in Reactor Environment[J]. Nuclear Power Engineering, 2021, 42(S2): 93-98. doi: 10.13832/j.jnpe.2021.S2.0093

Citation:

Wang Haoyu, Qin Mian, Pu Zengping, Zhu Fawen, Ran Renjie, Miao Yifei, Yuan Pan, Liu Menglong. Numerical Simulation Study of Hold-down Force of Leaf Spring Hold-down System of Fuel Assembly in Reactor Environment[J]. Nuclear Power Engineering, 2021, 42(S2): 93-98. doi: 10.13832/j.jnpe.2021.S2.0093

Citation:

Wang Haoyu, Qin Mian, Pu Zengping, Zhu Fawen, Ran Renjie, Miao Yifei, Yuan Pan, Liu Menglong. Numerical Simulation Study of Hold-down Force of Leaf Spring Hold-down System of Fuel Assembly in Reactor Environment[J]. Nuclear Power Engineering, 2021, 42(S2): 93-98. doi: 10.13832/j.jnpe.2021.S2.0093

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

doi: 10.13832/j.jnpe.2021.S2.0093

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-07-19
Accepted Date: 2021-12-06
Rev Recd Date: 2021-10-19
Publish Date: 2021-12-29

Abstract

Abstract

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.
- Fuel assembly,
- Leaf spring,
- Hold-down force,
- Irradiation relaxation

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References(10)

References

[1]	张林,蒲曾坪,冯琳娜. 燃料组件压紧部件分析研究[J]. 核动力工程,2013, 34(S1): 148-151.
[2]	茹俊,庞华,焦拥军. 压水堆燃料组件辐照考验技术研究[J]. 核动力工程,2017, 38(S1): 175-177.
[3]	李云,李华,张林,等. CF2燃料组件主要堆内辐照性能[J]. 强激光与粒子束,2020, 32(10): 157-161.
[4]	金渊. 燃料组件压紧板弹簧的刚度分析模型研究[J]. 核动力工程,2016, 37(4): 28-33.
[5]	朱发文,蒲曾坪,陈平,等. 基于蒙特卡洛方法的燃料组件压紧力计算模型研究[J]. 核动力工程,2018, 39(2): 185-188.
[6]	蒲曾坪,张吉斌,齐敏,等. 燃料组件板弹簧压紧系统非线性特征数值研究[J]. 核动力工程,2015, 36(S2): 87-89.
[7]	徐杰,陈建伟,林峰,等. 真空环境下燃料组件压紧弹簧疲劳应力松弛研究[J]. 核科学与工程,2020, 40(2): 227-232. doi: 10.3969/j.issn.0258-0918.2020.02.008
[8]	DE HEIJ P G, D'HULST D, VAN HOEPEN J, et al. Residual tensile strength of neutron irradiated Inconel 718 bolts[J]. Fusion Engineering and Design, 2001, 58-59: 775-779. doi: 10.1016/S0920-3796(01)00567-1
[9]	CHAOUADI R, SCIBETTA M, SMOLDERS B, et al. Irradiation creep inducing stress relaxation of precipitation hardened Inconel 718 exposed to 0.5 dpa at 300℃: BLG-843[R]. Belgian: Belgian Nuclear Research Center, 2000.
[10]	BYUN T S, FARRELL K. Tensile properties of Inconel 718 after low temperature neutron irradiation[J]. Journal of Nuclear Materials, 2003, 318: 292-299. doi: 10.1016/S0022-3115(03)00006-0