大法线角下射流的跳弹效应

焦龙; 马宏昊; 李如江; 沈兆武

doi:10.11858/gywlxb.2014.04.012

大法线角下射流的跳弹效应

doi: 10.11858/gywlxb.2014.04.012

焦龙¹,
马宏昊^1,*, ,,
李如江²,
沈兆武¹

1.
中国科学技术大学近代力学系，安徽合肥 230027
2.
中北大学化工与环境学院，山西太原 030051

基金项目: 国家自然科学基金重点项目(51134012);国家自然科学基金(51174183)

详细信息

作者简介:
焦龙(1989-), 男, 硕士研究生, 主要从事爆炸力学研究.E-mail:jiaolong@mail.ustc.edu.cn

通讯作者:
马宏昊(1980-), 男, 博士, 副教授, 主要从事爆轰物理研究.E-mail:hhma@ustc.edu.cn

中图分类号: O385;O358
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出版历程
- 收稿日期: 2012-10-11
- 修回日期: 2012-12-20

Ricochet Effect of Shaped Charge Jet under Large Normal Angle Condition

1.
Department of Modern Mechanics, University of Scienceand Technology of China, Hefei 230027, China
2.
School of Chemical Engineering and Environment, North University of China, Taiyuan 030051, China

摘要

摘要: 国内外对大法线角下的射流侵彻问题缺乏系统研究。为此，对比分析了Tate模型、Rosenberg模型和可压缩流体力学模型3种跳弹模型，并对大法线角下射流侵彻装甲钢和铝靶进行了实验研究。理论分析表明，可压缩流体力学模型能更准确地预测跳弹角。实验结果显示：大法线角下射流的侵彻深度随法线角的增大而减小，射流的垂直侵彻深度仅为正侵彻深度的10%左右；射流头部速度为6 800 m/s时，603装甲钢的跳弹角在6°~7°之间，铝的跳弹角在5°~6°之间。
- 聚能射流 /
- 跳弹 /
- 跳弹角 /
- 靶板性质 /
- 大法线角
Abstract: At present, there is a lack of systematic research on the shaped charge jet penetration under large normal angle condition, especially the special phenomenon of jet ricochet.Three ricochet models, including Tate model, Rosenberg model and compressible fluid-mechanics model, were comparatively analyzed, and the experiments of jet penetration into steel and aluminum targets were also conducted.Theoretical analysis shows that the compressible fluid-mechanics model is the best one to predict the rebounding angle.The experiment results indicate that under large normal angle condition, the penetration depth decreases with the increase of normal angle, and the vertical penetration depth is just about ten percents of that of normal penetration.When the velocity of shaped charge jet head is 6 800 m/s, the ricochet angle is between 6° and 7° for 603 armor steel and between 5° and 6° for aluminum.
- shaped charge jet /
- ricochet /
- ricochet angle /
- target characteristic /
- large normal angle

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图 1 弹体与靶板的作用

Figure 1. Interaction between

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图 2 斜激波波阵面两侧的速度

Figure 2. Oblique shock wave velocity

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图 3 实验装置示意图

Figure 3. Schematic of experimental setup

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图 4 射流侵彻603装甲钢靶的实验结果

Figure 4. Experimental results of jet penetration into 603 armor steel target

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图 5 射流侵彻铝靶的实验结果

Figure 5. Experimental results of jet penetration into aluminum target

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表 1 材料参数

Table 1. Material parameters

Material	Density/(g/cm³)	σ/(GPa)	E/(GPa)	p/(GPa)	c₀/(m/s)	λ
Steel	7.890	1.200	210.0	24.0	3 574	1.92
Aluminum	2.707	0.200	27.6	4.0	5 370	1.29
Copper	8.930	0.090	1.1	1.8	3 960	1.50

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表 2 3种模型计算得到的跳弹角

Table 2. Ricochet angles calculated by three models

Material	Ricochet angle/(°)
Material	Compressible fluid-mechanics model	Tate model	Rosenberg model
Steel	3.08	0.002 0	2.43
Aluminum	4.85	0.001 8	2.66

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参考文献(10)

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