Page 131 - 《爆炸与冲击》2025年第5期

第 45 卷 第 5 期 爆 炸 与 冲 击 Vol. 45, No. 5
2025 年 5 月 EXPLOSION AND SHOCK WAVES May, 2025

DOI：10.11883/bzycj-2024-0181

超高速撞击条件下混凝土靶体内

应力波的测量和分析 *

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钱秉文 ，周 刚 ，陈春林 ，马 坤 ，李艺烁 ，高鹏飞 ，尹立新 1
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（1. 西北核技术研究所，陕西 西安 710024；
2. 中国海洋大学工程学院，山东 青岛 266100）
摘要： 为探究超高速撞击条件下混凝土靶内的应力波特性，建立了基于 PVDF（polyvinylidene difluoride）压电应力
计的应力波测试系统，研究了 PVDF 压电应力计的标定方法，测量了克级柱形 93W 钨合金弹体超高速撞击条件下混凝
土靶体内的应力波形，并利用数值模拟方法分析了应力波的产生和传播机制。结果表明：PVDF 压电应力计的动态灵
敏度系数为 (17.5±0.5) pC/N；信噪比高的超高速撞击条件下实验测量的混凝土靶内的应力波形与数值模拟结果吻合较
好，模拟和实验获得的应力波峰值的最大偏差不超过 20%。
关键词： 超高速撞击；应力波；PVDF；钨合金弹；混凝土靶；二级轻气炮
中图分类号： O385 国标学科代码： 13035 文献标志码： A

Measurement and analysis of stress waves in concrete target
under hypervelocity impact

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QIAN Bingwen , ZHOU Gang , CHEN Chunlin , MA Kun , LI Yishuo , GAO Pengfei , YIN Lixin 1
（1. Northwest Institute of Nuclear Technology, Xi’an 710024, Shaanxi, China;
2. College of Engineering, Ocean University of China, Qingdao 266100, Shandong, China）
Abstract: To investigate the stress wave characteristics within concrete targets under hypervelocity impact, a stress wave
testing system based on polyvinylidene difluoride (PVDF) piezoelectric stress gauges was established. A calibration method for
PVDF piezoelectric stress gauges was proposed and conducted. The stress waveforms within concrete targets impacted by
kilogram-scale cylindrical 93W tungsten alloy projectiles at hypervelocity were measured, and the generation and propagation
mechanisms of stress waves were analyzed using numerical simulation methods. The following conclusions were drawn:
(1) the dynamic characteristic parameters of the PVDF piezoelectric stress gauge were calibrated to yield a dynamic sensitivity
coefficient of (17.5±0.5) pC/N for the PVDF piezoelectric stress gauge; (2) high signal-to-noise ratio stress waveforms within
the concrete target under hypervelocity impact conditions were obtained using the PVDF piezoelectric stress gauge; (3) the

stress waveforms obtained from numerical simulation were in good agreement with the experimentally measured waveforms
where the maximum deviation of the stress wave peak values between simulation and experimental results is less than 20%,
providing a useful tool for mechanism exploration; (4) the characteristics of stress waves within the concrete target and the
mechanisms of generation and attenuation were further explored using numerical simulation methods.
Keywords: hypervelocity impact; stress wave; PVDF; tungsten alloy projectile; concrete target; two-stage light gas gun

* 收稿日期： 2024-06-13；修回日期： 2024-10-09
基金项目： 国家自然科学基金（11802248）
第一作者： 钱秉文（1987－ ），男，博士，副研究员，qianbingwen@nint.ac.cn
通信作者： 周 刚（1964－ ），男，博士，研究员，博士生导师，gzhou@nint.ac.cn

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