高速弹体对钢筋混凝土靶的侵彻/贯穿效应实验研究

戴湘晖; 周刚; 沈子楷; 李鹏杰; 初哲; 王可慧; 段建; 胡玉涛; 杨慧

doi:10.11858/gywlxb.20180672

高速弹体对钢筋混凝土靶的侵彻/贯穿效应实验研究

doi: 10.11858/gywlxb.20180672

西北核技术研究所强动载与效应实验室，陕西西安　710024

详细信息

作者简介:
戴湘晖（1986－），男，博士研究生，工程师，主要从事冲击动力学研究. E-mail：daixianghui@nint.ac.cn

通讯作者:
周　刚（1964－），男，博士，研究员，主要从事爆炸与冲击动力学研究. E-mail：gzhou@nint.ac.cn

中图分类号: O385
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出版历程
- 收稿日期: 2018-10-29
- 修回日期: 2018-12-21
- 发布日期: 2019-06-25

Experimental Study of High-Speed Projectile Penetration/Perforation into Reinforced Concrete Targets

Laboratory of Intense Dynamic Loading and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China

摘要

摘要: 为了研究高速弹体对钢筋混凝土靶的侵彻/贯穿效应，以100 mm口径滑膛炮作为发射平台，驱动10 kg级卵形弹体以820～1195 m/s速度撞击强度为31.0～43.6 MPa的钢筋混凝土靶，获得了弹体侵彻/贯穿钢筋混凝土靶的终点弹道实验数据，并对弹体的侵彻/贯穿深度、靶板侧面自由面效应、弹体的变形进行了详细分析。结果表明：弹体的侵彻/贯穿深度为2.2～2.8 m，部分经验公式预估的侵彻/贯穿深度与实验结果吻合较好；当靶面相对尺寸较小且弹速较高时，靶板侧面自由面效应比较明显；当弹速达到1195 m/s时，弹体开始由刚体向半流体转变。
- 高速 /
- 弹体 /
- 钢筋混凝土 /
- 侵彻 /
- 贯穿 /
- 自由面效应
Abstract: The penetration/perforation effects of high-speed ogive-nosed projectiles on reinforced concrete (RC) targets were experimentally investigated. The projectiles with a mass of approximately 10 kg were launched by a 100 mm power gun to striking velocities between 820 and 1195 m/s and impacted on the RC targets with the unconfined cylinder compressive strength from 31.0 MPa to 43.6 MPa. The end-point trajectory data of projectiles penetrating/perforating into RC targets are obtained. The penetration/perforation depths and deformations of high-speed projectiles, free surface effects of RC targets were analyzed. The results show that the penetration/perforation depths of high-speed projectiles ranges from 2.2 m to 2.8 m. The predicted penetration/perforation depths by some empirical formulas were in good agreement with the experimental data. Furthermore, those targets with smaller relative surface size and the projectile with higher velocity, the free surface effects were more significant. In addition, the projectile behaves from rigid to semi-fluid mechanism when the striking velocity reaches to 1195 m/s.
- high-speed /
- projectile /
- reinforced concrete /
- penetration /
- perforation /
- free surface effects

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图 1 弹体结构示意图

Figure 1. Schematic of the projectile composition

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图 2 实验现场布局示意

Figure 2. Layout of projectile penetration experiment

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图 3 发射弹体

Figure 3. Launching projectile

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图 4 实验用钢筋混凝土靶板

Figure 4. Layout of RC targets

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图 5 弹体撞靶前高速录像

Figure 5. Typical photographs before projectiles impacting from high-speed camera

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图 6 弹体对钢筋混凝土靶的侵彻/贯穿情况

Figure 6. Post-test photographs of projectiles penetration/perforation into RC targets

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图 7 回收弹体

Figure 7. Recovered projectiles

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图 8 侵彻/贯穿深度与速度关系

Figure 8. Penetration/perforation depth versus impact velocity

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表 1 弹体参数

Table 1. Parameters of the projectiles

Projectile No.	CRH	d/mm	L/mm	m/kg
1^#，2^#	3.0	67.0	450.0	8.00
3^#	3.0	72.7	477.3	10.72
4^#	4.0	74.5	436.4	9.96
5^#	4.5	66.7	460.0	11.09

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表 2 随炉试件力学性能检测结果

Table 2. Mechanical properties of heat-treated specimens

Projectile No.	R_p0.2/MPa	R_m/MPa	Z/%	A_s/%	A_ku2/J
1^#，2^#	1322.2	1719.8	13.9	52.8	73.7
3^#，4^#	1291.3	1626.3	12.2	53.3	71.6
5^#	1269.0	1636.5	11.5	48.5	68.7

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表 3 钢筋混凝土靶参数

Table 3. Parameters of RC targets

No.	f_c/MPa		r_c/%	Size of target	Size of rebar grid/ (mm×mm)	d₁/mm	$\alpha $/(°)	$\eta $
No.	Designed	Measured	r_c/%	Size of target	Size of rebar grid/ (mm×mm)	d₁/mm	$\alpha $/(°)	$\eta $
1^#	40	43.6	0.6	1.4 m×1.4 m×2.8 m (2.3 m+0.5 m)	100×100	10	0	20.1
2^#	40	43.6	0.6	1.4 m×1.4 m×2.8 m (2.3 m+0.5 m)	100×100	10	0	20.1
3^#	40	39.2	0.6	2.4 m×2.4 m×2.4 m	100×100	12	20	33.0
4^#	30	32.3	0.3	2.4 m×2.4 m×2.4 m	100×100	12	20	32.2
5^#	30	31.0	0.6	${\varnothing 1.5\;{\rm{m}} \times 3.5\;{\rm{m}}}$	100×100	10	0	22.5

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表 4 侵彻/贯穿深度实验结果

Table 4. Experimental results of penetration/perforation depth

Projectile No.	Velocity/(m·s^–1)	Depth/m	Type of penetration
1^#	1019	2.44	Limit perforation
2^#	1195	2.80	Limit perforation
3^#	1020	2.44	Limit perforation
4^#	840	2.20	Limit perforation
5^#	820	2.30	Semi-infinite penetration

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