弹体斜侵彻混凝土靶的实验研究及其数值模拟

薛建锋; 沈培辉; 王晓鸣

doi:10.11883/1001-1455(2017)03-0536-08

弹体斜侵彻混凝土靶的实验研究及其数值模拟

doi: 10.11883/1001-1455(2017)03-0536-08

南京理工大学智能弹药技术国防重点学科实验室，江苏南京 210094

基金项目:

国家重点基础研究发展计划(973计划)项目 61314302

详细信息

作者简介:
薛建锋(1987-)，男，讲师

通讯作者:
沈培辉，sphjy8@mail.njust.edu.cn

中图分类号: O385
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- 文章访问数: 4677
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- 被引次数: 0
出版历程
- 收稿日期: 2015-11-05
- 修回日期: 2016-01-20
- 刊出日期: 2017-05-25

Experimental study and numerical simulation of projectile obliquely penetrating into concrete target

ZNDY Ministerial Key Laboratory, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

摘要

摘要: 以弹体斜侵彻混凝土的弹道特性为研究内容，通过侵彻实验与数值模拟得到了不同速度下的侵彻深度、开坑尺寸、偏转角等参数，实验结果与模拟结果吻合较好。研究结果表明：倾角对开坑深度和开坑形状影响很大；倾角越大，对侵彻深度和偏转角的影响越明显，弹体偏转角随着速度的增大呈现减小的趋势；当倾角增至一定角度后发生跳弹现象，据此得到跳弹极限角与倾角、侵彻速度的关系。
- 弹体 /
- 斜侵彻 /
- 混凝土靶 /
- 弹道特性 /
- 偏转角
Abstract: The ballistic characteristics of the projectile obliquely penetrating into the concrete target were investigated, with such data as the penetration depth, crater depth and diameter, deflection angle obtained via the experiments and simulation calculation. The results from simulation agree well with those from the experiments. The results show that the oblique angle has great influence on the crater zone. The greater the oblique angle, the greater the projectile's deflection; the greater the impact velocity, the less the influence of the ballistic deflection angle; and the ricochet occurs when the oblique angle increases to a certain degree. Thus the relationship was identified between the ricochet angle and the oblique angle and the penetration velocity.
- projectile /
- oblique penetration /
- concrete targets /
- ballistic characteristic /
- transverse deflection angle

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图 1 实验现场示意图

Figure 1. Schematic diagram of experiment set

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图 2 弹体和混凝土靶

Figure 2. Projectiles and concrete

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图 3 倾角侵彻靶面及弹道轨迹

Figure 3. Obliquely penetrated target surface and ballistic trajectory

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图 4 有限元模型

Figure 4. Finite element model

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图 5 侵彻效果

Figure 5. Penetration effect

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图 6 跳弹

Figure 6. Ricochet

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图 7 实验和数值模拟结果对比

Figure 7. Comparison of the experimental with the simulated results

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图 8 侵彻深度与倾角的关系

Figure 8. Ralation between penetration depth and oblique angle

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图 9 姿态角与倾角的关系

Figure 9. Ralation between attitude angle and oblique angle

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图 10 跳弹极限角与速度的关系

Figure 10. Relation between ricochet angle and velocity

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图 11 不同倾角下的弹道轨迹

Figure 11. Ballistic trajectory due to different oblique angle

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图 12 侵彻深度随倾角变化关系

Figure 12. Penetration depth vs. oblique angle

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图 13 斜侵彻下的弹道轨迹变化

Figure 13. Ballistic trajectory under oblique penetration

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图 14 斜侵彻下的偏转角变化

Figure 14. Deflection angle under oblique penetration

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表 1 倾角侵彻混凝土实验结果

Table 1. Experimental results of oblique penetration into concrete

v/(m·s^-1)	β/(°)	实验现象	S/cm	Y_d/cm	X_d/cm	X_p/cm	Y_p/cm	h/cm	δ/(°)
1 018	20	侵入	19.7	22.0	28.0	16.8	23.6	5.6	4.6
920	20	侵入	18.5	15.5	18.0	10.2	18.0	4.0	9.6
853	20	侵入	16.5	25.0	28.0	14.6	14.2	3.6	14.1
1 051	30	侵入	26.0	15.0	18.0	17.5	22.5	5.2	7.6
805	30	侵入	17.5	11.5	14.5	8.7	12.3	3.1	11.2
925	30	侵入	18.1	13.4	16.7	10.3	14.5	3.6	13.4
923	40	侵入	16.3	12.5	15.2	11.2	5.6	2.2	17.5
922	51	跳弹	15.0	10.0	21.0	12.4	2.5	2.5	25.0
1 222	65	跳弹	19.0	21.0	25.0	16.3	5.4	5.4	31.0

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表 2 混凝土材料模型参数

Table 2. Parameters of concrete material model

ρ/(g·cm^-3)	A	B	N	C	f_c/GPa	S_max	G/GPa	D₁	D₂
2.4	0.79	1.6	0.61	0.007	0.048	7	14.86	0.04	1

ε_{f, min}	p_c/GPa	μ_c/GPa	K₁/GPa		K₂/GPa	K₃/GPa	p_c/GPa	μ₁	T/GPa
0.01	0.016	0.001 1	85		-171	208	0.8	0.1	0.004

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表 3 弹体实验与数值模拟结果对比

Table 3. Comparison of experimental with simulated results

编号	v/(m·s^-1)	β/(°)	Y_p/cm		误差/%	δ/(°)		误差/%
编号	v/(m·s^-1)	β/(°)	实验	数值模拟	误差/%	实验	数值模拟	误差/%
1	1 018	20	23.6	22.1	6.3	4.6	4.9	6.5
2	920	20	18.0	16.8	6.6	9.6	10.5	9.4
3	853	20	14.2	13.4	5.9	14.1	15.3	8.5
4	1 051	30	22.5	20.9	7.7	7.6	8.2	7.9
5	805	30	12.3	11.5	6.9	11.2	12.1	8.1
6	925	30	14.5	13.8	5.4	13.4	14.6	10.3
7	923	40	5.6	5.2	3.6	17.5	19.4	8.2
8	922	51	2.5	2.3	8.6	80.0	84.2	6.7

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