聚能装药对混凝土靶板的侵彻研究

发布时间：2018-03-19 23:07

本文选题：聚能装药　切入点：混凝土　出处：《力学学报》2015年04期 　论文类型：期刊论文

【摘要】：系统开展了不同药型罩材料、不同锥角、不同壁厚的聚能装药在不同炸高下侵彻混凝土试验,研究了罩材料、锥角、壁厚、炸高等结构参数对漏斗坑直径、侵彻孔洞直径、漏斗坑深度以及侵彻深度等参数的影响规律;应用空腔膨胀理论计算了混凝土靶体阻力,采用改进的伯努利方程和两阶段空腔膨胀理论获得了混凝土靶板在侵彻体作用下的侵彻深度和孔洞直径,理论结果与试验结果基本吻合;基于AUTODYN软件平台,采用与试验一致的聚能装药结构,开展了57种工况下侵彻体成形过程的数值模拟研究,并对其中典型工况的侵彻混凝土过程进行了数值模拟,计算所得孔洞直径和侵彻深度与试验结果吻合较好,在此基础上深入探讨了聚能装药作用下混凝土漏斗坑的形成机理,分析表明,铝药型罩的开坑机理不同于钢和铜药型罩.
[Abstract]:The experiments of penetrating concrete with different charge materials, different cone angles and different wall thickness at different blast heights were carried out systematically. The effects of shell material, cone angle, wall thickness and high structural parameters on the diameter of funnel and the diameter of penetration hole were studied. The influence of the parameters such as the depth of the funnel and the depth of penetration is studied, and the resistance of the concrete target is calculated by using the cavity expansion theory. By using the improved Bernoulli equation and the two-stage cavity expansion theory, the penetration depth and pore diameter of concrete target plate under the action of penetration body are obtained. The theoretical results are in good agreement with the experimental results. In this paper, the numerical simulation of penetration forming process under 57 working conditions is carried out using the structure of shaped charge which is consistent with the test, and the process of penetrating concrete under typical working conditions is numerically simulated. The calculated hole diameter and penetration depth are in good agreement with the experimental results. On this basis, the formation mechanism of concrete funnel pits under the action of shaped charge is discussed in depth. The analysis shows that the opening mechanism of aluminum powder cover is different from that of steel and copper powder.
【作者单位】：北京理工大学爆炸科学与技术国家重点实验室;中国工程物理研究院化工材料研究所;
【基金】：国家自然科学基金(11325209,11221202) 爆炸科学与技术国家重点实验室自主课题(ZDKT11-01)资助项目)~~
【分类号】：TJ410.34;TU37

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