Page 4 - 《爆炸与冲击》2026年第8期

第 46 卷 第 8 期 爆 炸 与 冲 击 Vol. 46, No. 8
2026 年 8 月 EXPLOSION AND SHOCK WAVES Aug., 2026

DOI：10.11883/bzycj-2025-0301

核级不锈钢 Z2CN18.10 的 Johnson-Cook

本构模型和失效准则 *

彭 建 ，郭泽华 ，李兴华 ，朱容赋 ，韩学杰 ，秦冬阳 ，汤忠斌 ，李玉龙 2
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（1. 深圳中广核工程设计有限公司，广东 深圳 518026；
2. 西北工业大学航空学院，陕西 西安 710072；
3. 阳江核电有限公司，广东 阳江 529500）
摘要： 为准确描述核级不锈钢 Z2CN18.10 在动态载荷下的力学行为，通过电子万能试验机和传统 Hopkinson 拉杆
系统开展了准静态与高应变率拉伸实验，获取了该材料在常温至 400 ℃、应变率 10 ～10 s 范围内的应力-应变响
−3
3
−1
应。针对传统 Hopkinson 杆无法实现大应变加载的局限，采用电磁驱动双向 Hopkinson 拉杆测量了 Z2CN18.10 不锈钢
在不同应力三轴度下的失效应变。基于实验数据拟合了 Johnson-Cook 本构模型和失效准则参数，并通过空气炮高速
冲击实验验证了模型的有效性。结果表明，数值仿真与实验关于破孔尺寸、峰值应变和支撑反力的差值分别为 4.4%、
7.5% 和 2.3%，吻合良好。建立的 Z2CN18.10 不锈钢可靠动态本构模型和失效准则可为核电站管道系统的抗冲击设计
与安全评估提供了重要的方法与数据基础。
关键词： Z2CN18.10 不锈钢；Johnson-Cook 本构模型；Johnson-Cook 失效准则；电磁 Hopkinson 杆；高速冲击实验
中图分类号： O374; TL48 国标学科代码： 13015 文献标志码： A

Johnson-Cook constitutive model and failure criterion
for nuclear-grade stainless steel Z2CN18.10

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PENG Jian , GUO Zehua , LI Xinghua , ZHU Rongfu , HAN Xuejie ,
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QIN Dongyang , TANG Zhongbin , LI Yulong 2
（1. China Nuclear Power Design Company, Ltd., (Shenzhen), Shenzhen 518026, Guangdong, China;
2. School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China;
3. Yangjiang Nuclear Power Co., Ltd., Yangjiang 529500, Guangdong, China）
Abstract: Nuclear-grade stainless steel Z2CN18.10 is widely used in nuclear power plant piping systems. Its dynamic
mechanical behavior under combined high strain rates and elevated temperatures is of great significance for assessing structural
integrity under impact loads. To accurately characterize the mechanical behavior of Z2CN18.10 under dynamic loading, quasi-
static and high-strain-rate tensile experiments were conducted using a universal electronic testing machine and a conventional
split Hopkinson tension bar system. The stress-strain responses of the material were obtained within temperature ranges from
3 −1
−3
ambient (25 ℃) up to 400 ℃ and strain rates from 10 to 10 s . To overcome the limitation of conventional Hopkinson bar
apparatus in achieving large-strain loading, an electromagnetically driven bidirectional Hopkinson tension bar system was
employed to measure the failure strain of the material under different stress triaxialities. Based on the experimental data,
parameters for the Johnson-Cook constitutive model and failure criterion were fitted, and the validity of the model was verified
through high-speed impact experiments using a gas gun. The results show that the differences between numerical simulations
and experiments in terms of perforation diameter, peak strain, and support reaction force were 4.4%, 7.5%, and 2.3%,

* 收稿日期： 2025-09-15；修回日期： 2026-01-17
第一作者： 彭 建（1984－ ），男，硕士，高级工程师，pjfhf@126.com
通信作者： 郭泽华（2002－ ），男，硕士研究生，guozehua315@163.com
汤忠斌（1977－ ），男，博士，副教授，tangzhongbin@nwpu.edu.cn

081001-1