Experimental Investigation of Ground Reflected Overpressure of Shock Wave in Air Blast

DUAN Xiao-yu; CUI Qing-zhong; GUO Xue-yong; JIAO Qing-jie

doi:10.3969/j.issn.1000-1093.2016.12.013

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Experimental Investigation of Ground Reflected Overpressure of Shock Wave in Air Blast

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- Experimental Investigation of Ground Reflected Overpressure of Shock Wave in Air Blast
- Acta Armamentarii Vol. 37, Issue 12, Pages: 2277-2283(2016)
- 作者机构：
  
  北京理工大学爆炸科学与技术国家重点实验室,北京,100081
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1000-1093.2016.12.013
  CLC： O384
- Published：2016
- 稿件说明：
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DUAN Xiao-yu, CUI Qing-zhong, GUO Xue-yong, et al. Experimental Investigation of Ground Reflected Overpressure of Shock Wave in Air Blast[J]. Acta Armamentarii2016, 37(12): 2277-2283.
DOI：

DUAN Xiao-yu, CUI Qing-zhong, GUO Xue-yong, et al. Experimental Investigation of Ground Reflected Overpressure of Shock Wave in Air Blast[J]. Acta Armamentarii2016, 37(12): 2277-2283. DOI： 10.3969/j.issn.1000-1093.2016.12.013.

摘要

为进一步研究炸药在空气中爆炸的冲击波参数，对梯恩梯（TNT）、HL0（黑索今（RDX）95%+石蜡（Wax）5%）和HL15（RDX 80%+Wax 5%+Al 15%）3种炸药不同距离处的冲击波反射超压进行了测试。实验结果表明：相比HL0和TNT，HL15在距爆炸中心3 m、4 m和5 m处的峰值超压最大；随着距离的增加，在7 m、9 m和12 m处，3种炸药的冲击波峰值超压越来越接近。采用幂指数公式对3种炸药的冲击波超压与对比距离之间的关系进行拟合后发现：在距离R≤2.6 m时，3种炸药的峰值超压大小顺序为HL0≥HL15TNT；当2.6 m HL0 TNT；对于指前因子k值，HL0HL15TNT；对于衰减系数α值，HL0 TNTHL15；k值和α值共同决定着冲击波反射超压大小；幂指数拟合公式在取对数后为线性关系，在外推时得到的数据更接近实验值，因此可以作为研究炸药在空气中爆炸的地面反射超压经验公式。

Abstract

In order to investigate the parameters of shock wave in air blast

the ground reflected overpressures of TNT

HL0（RDX 95%+Wax 5%）and HL15（RDX 80%+Wax 5%+Al 15%） at different locations were tested. Test resultes show that the peak overpressures of HL15 are maximal at 3 m

4 m and 5 m from the center of explosion compared with TNT and HL0. The peak overpressures of three explosives get closer to each other at 7 m

9 m and 12 m from the center of explosion with the increase in distance. Power exponential formulas are used to fit the relationship between peak overpressure and scaled distance. The fitting results show that the magnitude order of peak overpressures is HL0≥HL15TNT for R≤ 2.6 m; the magnitude order of peak overpressures is HL15 HL0 TNT for 2.6 m Key words: ordnance science and technology

air blast

reflected overpressure

similarity relationship

power exponential fitting

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Related Institution

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