Numerical simulation on fatigue behavior of copper interlayer of divertor under ELM heat shock

doi:10.16568/j.0254-6086.201901011

NUCLEAR FUSION AND PLASMA PHYSICS ›› 2019, Vol. 39 ›› Issue (1): 68-75.DOI: 10.16568/j.0254-6086.201901011

• Nuclear Fusion Engineering and Technology • Previous Articles Next Articles

Numerical simulation on fatigue behavior of copper interlayer of divertor under ELM heat shock

LIU Shi-min, HUANG Sheng-hong

(CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026)

Online:2019-03-15 Published:2019-03-13

边缘局域模热流冲击下偏滤器铜夹层疲劳行为的数值模拟

柳世民，黄生洪*

(中国科学技术大学材料力学行为和设计重点实验室，合肥 230026)

作者简介:柳世民(1995-)，男，安徽临泉人，硕士研究生，主要研究方向：结构力学数值模拟。
基金资助:
国家磁约束核聚变发展研究专项(2015GB121007)；合肥物质科学技术中心重要项目培育基金(2018ZYFX001)

Abstract

Abstract:

With the finite element software, comprehensive numerical simulations on thermal/mechanical response and fatigue behaviors of divertor monoblock Cu interlayer under combined loads of high heat flux (HHF) and edge localized modes (ELMs) were conducted. The results show that: (1) the plastic damages induced by transient heat shock of ELMs will be coupled with damage by HHF loads in interlayer of copper; (2) under the combined loads of HHF and ELMs, the fatigue life of the interlayer continues to decrease and the magnitude of the decrease is nonlinearly increased with the peak and time-averaged heat flux of the ELMs; (3) the fatigue life reduction of the interlayer more sensitive to the peak heat flux and frequency of ELMs under the same time-averaged heat flux conditions.

摘要：

采用有限元方法对偏滤器单块铜夹层在高热通量(HHF)和边缘局域模(ELMs)叠加载荷条件下的热力响应和热疲劳行为展开了细致的数值模拟，结果表明：(1) ELMs 瞬态热冲击引起的铜夹层损伤将与HHF 载荷引起的损伤相耦合；(2) 在HHF 和ELMs 叠加载荷作用下，夹层的疲劳寿命不断下降，下降的幅度随着ELMs 峰值和时均热流密度的增加而非线性增大；(3) 夹层疲劳寿命的缩短对ELMs 峰值热流密度和频率更为敏感。

关键词: 偏滤器, 边缘局域模, 疲劳, 热冲击, 有限元

CLC Number:

TL69

LIU Shi-min, HUANG Sheng-hong. Numerical simulation on fatigue behavior of copper interlayer of divertor under ELM heat shock[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2019, 39(1): 68-75.

柳世民，黄生洪*. 边缘局域模热流冲击下偏滤器铜夹层疲劳行为的数值模拟[J]. 核聚变与等离子体物理, 2019, 39(1): 68-75.

References

[1] Arnoux G, Bazylev B, Lehnen M, et al. Heat load measurements on the JET first wall during disruptions[J].J. Nucl. Mater. 2011, 415(1): S817- S820.

[2] Lehnen M, Arnoux G, Hartmann N, et al. Disruption heat loads and their mitigation in JET with the ITER-like wall[J]. J. Nucl. Mater., 2013, 438: S102-S107.

[3] Linke J, Akiba M, Bolt H. Performance of beryllium,carbon, and tungsten under intense thermal fluxes[J]. J.Nucl. Mater., 1997, 241: 1210-1216.

[4] Li M Y , Werner E, You J H. Low cycle fatigue behavior of ITER-like divertor target under DEMO-relevant operation conditions[J]. Fusion Engineering and Design,2015, 90: 88-96.

[5] Wirtz M, Linke J, Pintsuk G. Thermal shock behaviour of tungsten after high flux H-plasma loading[J]. J. Nucl.Mater., 2013, 443(1): 497-501.

[6] Zhaoxuan Sun, Qiang Li, Wanjing Wang, et al. Post examination of tungsten monoblocks subjected to high heat fluxtests of ITER full-tungsten divertor qualification program[J]. Fusion Engineering and Design,2017,121:60–69.

[7] You J H, Bolt H. Analytical method for thermal stress analysis of plasma facing materials[J]. J. Nucl. Mater.,2001, 299(1): 9-19.

[8] Dell'Orco G, Lorenzetto P, Malavasi A, et al. Thermalmechanical test on ITER primary first wall mock-ups[J].Fusion Engineering and Design, 2002, 61: 117-122.

[9] Aktaa J, Schmitt R. High temperature deformation and damage behavior of RAFM steels under low cycle fatigue loading: experiments and modeling[J]. Fusion Engineering and Design, 2006, 81(19): 2221-2231.

[10] Hibbitt, Karlsson, Sorensen, et al. Abaqus theory manual(v6.1)[S]. 2010.

[11] Davis J W, Smith P D. ITER material properties handbook[J]. J. Nucl. Mater., 1994, 233(Part2): 1593-1596.

[12] Crescenzi F, Moriani A, Roccella S, et al. Water-cooled divertor target design study CuCrZr/W monoblock concept [R]. EFDA Report: WP13-DAS02-T02-D02,2013.

[13] Hirai T, Ezato K, Majerus P. ITER relevant high heat flux testing on plasma facing surfaces[J]. Material Transaction, 2005, 46: 412–24.

Numerical simulation on fatigue behavior of copper interlayer of divertor under ELM heat shock

边缘局域模热流冲击下偏滤器铜夹层疲劳行为的数值模拟

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