椭圆截面弹体侵彻砂浆靶规律分析

王文杰; 张先锋; 邓佳杰; 郑应民; 刘闯

doi:10.11883/bzycj-2017-0020

椭圆截面弹体侵彻砂浆靶规律分析

doi: 10.11883/bzycj-2017-0020

南京理工大学机械工程学院, 江苏南京 210094

基金项目:

国家自然科学基金委员会与中国工程物理研究院联合基金项目 U1730101

中央组织部青年拔尖人才支持计划项目 2014年

装备预研领域基金项目 6140657010116BQ02001

详细信息

作者简介:
王文杰(1991—)，男，硕士研究生

通讯作者:
张先锋, lynx@njust.edu.cn

“第十一届全国爆炸力学学术会议”推荐论文
中图分类号: O385
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- 被引次数: 24
出版历程
- 收稿日期: 2017-01-16
- 修回日期: 2017-03-09
- 刊出日期: 2018-01-25

Analysis of projectile penetrating into mortar target with elliptical cross-section

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

摘要

摘要: 为研究椭圆截面弹体侵彻混凝土靶规律，基于动态球形空腔膨胀理论，建立椭圆截面弹体侵彻受力模型，计算典型椭圆截面弹体阻力规律和侵彻砂浆靶深度。在此基础上，采用弹道炮发射平台，开展相同质量和长度的2种典型椭圆截面弹体及圆截面弹体垂直侵彻半无限砂浆靶实验。结果表明：理论模型能够反映椭圆截面弹体受力情况，并与实验研究结果吻合较好；椭圆截面弹体长短轴参数的改变对侵彻性能影响较为显著。
- 椭圆截面弹体 /
- 混凝土目标 /
- 空腔膨胀理论 /
- 垂直侵彻
Abstract: In this work, based on the theory of dynamic spherical cavity expansion, we presented a force model of penetrating projectiles with an elliptical cross-section to study their penetration performance and, using this model, calculated the resistance of the elliptical cross section and the penetration depths. Further, we performed a series of experiments of two typical elliptical cross-sectioned and circular cross-sectioned projectiles with the same mass and length penetrating perpendicularly semi-infinite grout targets at a velocity of 700 m/s to 800 m/s. The results show that the established theoretical model reflected the force condition of the elliptical cross-section and the theoretical results agreed well with the experiment, and that the size of the cross-section had a significant influence on its penetration performance.
- elliptical cross-section projectile /
- concrete targets /
- cavity expansion theory /
- vertical penetration
注释:

1) “第十一届全国爆炸力学学术会议”推荐论文

HTML全文

图 1 弹体侵彻阻力分析示意图

Figure 1. Schematic of resistance analysis of projectiles

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图 2 3种弹体横截面示意图

Figure 2. Cross-section of three kinds of projectiles

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图 3 弹体实物图

Figure 3. Actual projectiles

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图 4 靶体实物图

Figure 4. Photograph of concrete target

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图 5 实验现场布置示意图

Figure 5. Schematic of experimental equipment in test site

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图 6 混凝土试样块静压实验

Figure 6. Static compressive experiment of concrete cube

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图 7 静压实验中混凝土试样应力位移关系

Figure 7. Relation between stress and displacement in static compressive experiment

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图 8 弹体着靶姿态高速摄影图片

Figure 8. High-speed photographs of flight attitude of projectiles before penetrating into target

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图 9 靶体撞击破坏照片

Figure 9. Damages of impacted targets in experiment

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图 10 弹体回收后照片

Figure 10. Photographs of recovered projectiles

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图 11 距弹尖相同高度处区间示意图

Figure 11. Interval at the same height from the projectile tip

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图 12 2种弹体在(0, π/2)区间上受力情况

Figure 12. Resistance of projectiles in (0, π/2) region

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图 13 侵彻深度和时间关系

Figure 13. Relation between penetration depth and time

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图 14 侵彻加速度和时间关系

Figure 14. Relation between deceleration and time

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图 15 3种弹体弹头形状示意图

Figure 15. Nose shape of three kinds of projectiles

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图 16 侵彻深度和时间关系

Figure 16. Relation between penetration depth and time

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图 17 侵彻加速度和时间关系

Figure 17. Relation between deceleration and time

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表 1 实验数据与理论模型结果对比

Table 1. Comparison between experimental and theoretical data

编号	m/g	γ/(°)	v₀/(m·s^-1)	d_max/mm	d_min/mm	h/mm	z/mm		ε/%
编号	m/g	γ/(°)	v₀/(m·s^-1)	d_max/mm	d_min/mm	h/mm	实验	理论	ε/%
L1-2	460	1.6	744	430	370	66	596	590	-1.00
L1-3	451	0.6	754	380	320	60	555	593	6.85
T1-1	448	2.5	755	540	480	71	573	591	3.14
T1-2	450	1.4	747	526	416	75	553	582	5.24
T1-3	447	1.1	748	260	230	66	570	580	1.75
T2-1	451	3.3	714	480	450	69	462	443	4.11
T2-2	443	1.7	740	490	440	70	472	468	-0.85
T2-3	451	0.9	741	470	440	68	471	477	1.27

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