混凝土防爆墙对爆炸冲击波传播的影响  

Effect of concrete protective wall on explosion shock wave

作　　者：张千里[1] 张耀[2] 年鑫哲[1] 

机构地区：[1]解放军理工大学国防工程学院,南京210007 [2]解放军国际关系学院,南京210007

出　　处：《振动与冲击》2013年第24期192-197,共6页Journal of Vibration and Shock

基　　金：国家自然科学创新研究群体科学基金(51021001)

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。Experimental and numerical investigations were performed for explosion shock wave around an anti-blast wall and explosion loads on a protective wall. The pressure transducer technique was adopted to measure the pressure distribution around the protective wall. Using ALE algorithm and JWL state equation for products of explosion shock wave, the numerical simulation of the shock wave eirculation around the wall was made. The initial development of the explosion field and the circulation current behavior around the wall were obtained and the law of the shock wave circulating the wall was analyzed. Both experimental and numerical results agreed well. They revealed the inherent mechanism of the blast wave around the wall and provided a reference for design of anti-blast walls.

关 键 词：冲击波传播 防护墙 爆炸力学 环流超压 

分 类 号：O383.2[理学—流体力学]