混凝土防爆墙对爆炸冲击波传播的影响

张千里 张耀 年鑫哲

振动与冲击 ›› 2013, Vol. 32 ›› Issue (24) : 192-197.

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PDF(1457 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (24) : 192-197.
论文

混凝土防爆墙对爆炸冲击波传播的影响

  • 张千里1 张耀2 年鑫哲1
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IMPACT EFFECT ON CONCRETE PROTECTIVE WALL OF EXPLOSION SHOCK WAVE

  • ZHANG Qian-li1 ZHANG Yao2 NIAN Xin-zhei1
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摘要

运用试验与数值模拟相结合的方法,对爆炸冲击波作用于防爆墙的荷载与冲击波绕过防爆墙的规律进行研究。采用压力传感器技术获得了防爆墙前后不同距离的压力时程曲线。基于ALE算法和炸药爆轰产物的JWL状态方程,对空气冲击波绕过墙体的环流现象进行了数值模拟,得到了爆源附近有障碍物的爆炸场初始发展和绕过墙体环流的情况,分析了空气冲击波的绕流规律。数值模拟与试验结果基本相符,反映了爆炸波绕过防爆墙的详细过程。通过对数值模拟和试验结果的分析,得到了爆炸波绕流的内在机理,为防爆墙的设计提供依据和参考。

Abstract

Experimental and numerical investigations were performed on explosive shock wave around the blast wall and explosive loads on the protective wall. The transducer pressure technology was adopted to measure the pressure distribute around the protective wall. Using ALE algorithm and the JWL state equation for the product of explosive shock wave , the numerical simulation of the shock wave rounding the wall was conducted. The initial development of explosive field and the circulation current behavior were obtained and the law of shock wave rounding the wall was analyzed. Both experimental and numerical results were in good agreement, which showed the inherent mechanism of blast wave rounding the wall and provided a reference for reinforcement mechanism study of wall for explosive atmospheres.


关键词

冲击波传播 / 防护墙 / 爆炸力学 / 环流超压

Key words

shock wave propagation / protective wall / explosion mechanics / circulationcurrent overpressure

引用本文

导出引用
张千里 张耀 年鑫哲. 混凝土防爆墙对爆炸冲击波传播的影响 [J]. 振动与冲击, 2013, 32(24): 192-197
ZHANG Qian-li ZHANG Yao NIAN Xin-zhei. IMPACT EFFECT ON CONCRETE PROTECTIVE WALL OF EXPLOSION SHOCK WAVE[J]. Journal of Vibration and Shock, 2013, 32(24): 192-197

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