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基于压导式连续电阻探针的珊瑚砂冲击Hugoniot曲线测试方法研究

张旭浩1,李科斌1,2*,孙渊博2,李晓杰3,陈翔4   

  1. 1. 宁波大学 冲击与安全工程教育部重点实验室, 浙江 宁波 315211; 2. 北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081; 3. 大连理工大学 工程力学系, 辽宁 大连 116024; 4. 江汉大学 精细爆破国家重点实验室, 湖北 武汉 430056
  • 收稿日期:2024-07-15 修回日期:2025-01-28
  • 基金资助:
    国家自然科学基金项目(12202217);北京理工大学爆炸科学与技术国家重点实验室开放基金项目(KFJJ21-19M)

Research on Test Method of Shock Hugoniot Curve of Coral Sand Based on Continuous Pressure-conducted Electrical Resistance Probe

ZHANG Xuhao1,LI Kebin1,2*, SUN Yuanbo2,LI Xiaojie3,CHEN Xiang4   

  1. 1. Key Laboratory of Impact and Safety Engineering of Ministry of Education, Ningbo University, Ningbo 315211, Zhejiang, China; 2. State Key Laboratory of Explosive Science and Technology, Beijing Institute of Technology, Beijing 10081, China; 3. Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, Liaoning, China; 4. State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, Hubei, China
  • Received:2024-07-15 Revised:2025-01-28

摘要: 珊瑚砂因其在远洋岛礁中获取的便利性及对爆炸冲击的良好防御作用,被广泛应用于岛礁军事防护工程,而研究珊瑚砂的高压冲击状态方程需获得其冲击Hugoniot数据。为此,基于压导式连续电阻探针设计多介质冲击波测试系统,通过化爆试验以获得炸药、标准材料和待测材料的爆轰波和冲击波时程曲线,结合阻抗匹配原理可最终反演待测材料的冲击Hugoniot线;以水作为待测材料开展可行性试验,验证了方法的可靠性;采用该法测定了珊瑚砂冲击波压力P与粒子速度Up的冲击Hugoniot曲线,并与石英砂数据进行对比。实验结果表明:基于多介质冲击波连续测试系统和阻抗匹配原理可方便可靠地测定待测材料的冲击Hugoniot曲线。为大尺度非均质材料冲击状态方程的研究提供了方法补充。

关键词: 珊瑚砂, 压导式连续电阻探针, 化爆加载, 冲击Hugoniot曲线, 阻抗匹配

Abstract: Coral sand is widely used in military protection projects of islands because of its convenience and well anti explosion buffering performance. It is necessary to obtain the shock Hugoniot data of coral sand before investigating the shock equation of state under high pressure. This paper developed a shock wave test system for multi-material based on continuous pressure-conducted electrical resistance probe, by which the detonation wave and shock wave time history curves of explosives, standard material and tested material can be determined in a explosion test. Then the shock Hugoniot curve of the tested material could be calculated based on the impedance matching principle. After that, a feasibility test was carried out using water as the tested material to verify the reliability of the method. Finally, the shock Hugoniot curve of coral sand, represented by shock wave pressure P and particle velocity Up, was determined with the present method, which was compared with the Hugoniot data of quartz sand. The experimental results show that, it is convenient and reliable to determine the shock Hugoniot curve of tested material based on the continuous testing system of multi-material shock waves and impedance matching principle. The presented exploration work provides a supplement to the experimental research of the shock equation of state for large-scale heterogeneous materials.

Key words: coral sand, continuous pressure-conducted electrical resistance probe, explosive loading, shock Hugoniot curve, impedance matching

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