有效射流与药型罩材料的分配关系

doi:10.3969/j.issn.1000-1093.2013.08.002

摘要/Abstract

摘要：

应用LS-DYNA 及动态示踪点处理方法,研究典型聚能装药有效射流与药型罩材料的细微分配关系。取临界侵彻速度为2 km/ s,将有效射流按速度分布分为高速( vj 逸5 km/ s), 次高速(4 km/ s臆vj <5 km/ s), 中速(3 km/ s臆vj <4 km/ s)和低速(2 km/ s臆vj <3 km/ s)4 个区间段。结果显示:药型罩的有效区域为一变壁厚的薄壁锥形体,高速段为药型罩顶部内表面往里0. 12 倍壁厚,其低速段最厚处为药型罩内表面往里0. 46 倍罩壁厚,距药型罩底端约0. 2 倍的罩高范围内不形成有效射流。药型罩内表面材料在形成射流时呈渐进分层剥离状,有效区域与药型罩壁厚及质量比例沿罩轴线方向均为指数分布。可为高效聚能装药及复合药型罩研究提供参考。

关键词: 兵器科学与技术, 聚能装药, 药型罩分界面, 数值模拟, 示踪点

Abstract:

Explicit finite software LS-DYNA and tracer point method are used to study the nice partition between useful jet and liner material. The useful jet is divided into four sections in terms of velocity distribution, such as high speed(vj 逸5 km/ s), sub-high speed(4 km/ s臆vj < 5 km/ s), medium speed(3 km/ s臆vj <4 km/ s) and low speed(2 km/ s臆vj <3 km/ s). The result indicates that the useful region of liner is a thin-wall cone with variable thickness along axial direction. The highest speed section of useful jet is nearby the top of liner, and its thickness is 0. 12 thickness of liner. The lowest speed section is in the lower part of liner, and its thickness is 0. 46 thickness of liner. The material in rang of about 0. 2 height from the bottom of liner can not generate useful jet. Liner material is stripped progressively from the inner side of liner in the process of jet forming. The thickness and mass ratios of useful region to liner are of exponential distribution along axial direction of liner. It can offer a reference the design of efficient shaped charge and composite liner.

Key words: ordnance science and technology, shaped charge, liner partition, numerical simulation, tracer point

中图分类号:

TJ410. 33

侯秀成, 蒋建伟, 陈智刚. 有效射流与药型罩材料的分配关系[J]. 兵工学报, 2013, 34(8): 935-941.

HOU Xiu-cheng, JIANG Jian-wei, CHEN Zhi-gang. Partition between Useful Jet and Liner Material[J]. Acta Armamentarii, 2013, 34(8): 935-941.

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