刚性钝头弹体正冲击GH4169间隔靶的消耗功分析

孙永壮; 吕中杰; 黄风雷; 刘彦

doi:10.11883/bzycj-2019-0457

刚性钝头弹体正冲击GH4169间隔靶的消耗功分析

doi: 10.11883/bzycj-2019-0457

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

基金项目: 国防基础科研重点项目（2016602B003）

详细信息

作者简介:
孙永壮（1995－　），男，硕士，sunforeverzhuang@163.com

通讯作者:
吕中杰（1968－　），男，博士，副教授，lvzhongjie@bit.edu.cn

中图分类号: O385; TJ102.4
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出版历程
- 收稿日期: 2019-12-04
- 修回日期: 2020-03-23
- 网络出版日期: 2020-07-25
- 刊出日期: 2020-08-01

Consumption work of GH4169 spacer plates in positive impact by blunt rigid projectiles

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 在380～680 m/s的弹体初速范围内，开展了直径8 mm钨球正冲击GH4169间隔靶实验，测得弹体初速、余速及靶板形貌，明显看出第1层板挠度较小,主要表现为剪切破坏，并产生了杯状挤凿块，第3层板挠度较大，主要表现为拉伸破坏。提出了间隔靶消耗功计算公式，结合剪切冲塞模型和建立的挤凿块速度模型计算了刚性钝头弹体冲击间隔靶中各层板的消耗功。结果表明，第2～3层板的单位面密度消耗功远高于相同面密度的第1层板，这与各层板的变形和失效形式密切相关。消耗功分析可用于定量描述间隔靶中各层板的抗侵彻性能。
- 间隔靶 /
- 消耗功 /
- 挤凿块速度 /
- 抗侵彻效应 /
- 弹道极限
Abstract: At the initial velocity range of 380~680 m/s, positive impact on GH4169 spacer plates by 8 mm diameter tungsten spheres was performed, measuring the initial velocity, residual velocity and deflection. It is obvious that the first plate is mainly subjected to shear damage and ejected cup-shaped plug, the third plate is mainly subjected to tensile failure, and the deflection of the third plate is significantly greater than the first plate. The calculation formula for the consumption work of the spacer plates is established, the consumption work of each plates impacted by projectiles is calculated by combining the shear plugging model and the plug velocity model. The results show that the unit area density consumption work of the second and third plates is much higher than that of the first plate, which is closely related to the deformation and failure modes of the plates. Consumption work can be used to quantitatively describe the ballistic resistance of each plate.
- spacer plates /
- consumption work /
- plug velocity /
- ballistic resistance /
- ballistic limit

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图 1 实验设备布置

Figure 1. Experimental equipment layout

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图 2 间隔靶结构示意图

Figure 2. Schematic of spacer plates structure

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图 3 GH4169间隔靶的贯穿情况

Figure 3. Penetration type of GH4169 spacer plates

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图 4 GH4169间隔靶的弹体初速和余速关系

Figure 4. Residual velocity curve for GH4169 spacer plates

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图 5 GH4169间隔靶的各层板挠度

Figure 5. Deflection of GH4169 spacer plates

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图 6 实验后GH4169间隔靶截面

Figure 6. Section of GH4169 spacer plates after experiment

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图 7 GH4169间隔靶消耗功示意图

Figure 7. Schematic of consumption work of spacer plates

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图 8 弹体余速与挤凿块速度关系

Figure 8. Residual velocity of projectiles and plug velocity

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图 9 弹体贯穿间隔靶各层板的消耗功

Figure 9. Consumption work of the spacer plates

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图 10 消耗功的比值

Figure 10. The ratio of consumption work

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图 11 单位面密度消耗功的比值

Figure 11. The ratio of unit area density consumption work

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表 1 GH4169（固溶处理）的物理和力学性能^[8]

Table 1. Physical and mechanical properties of GH4169 (solution treatment)

执行标准	ρ/(g·cm⁻³)	μ	T_m/°C	σ_b/MPa	σ_s0.2/MPa	E/GPa	G/GPa	H/HRB	δ₅/%
GB/T 14992～2005	8.24	0.3	1260～1320	965	550	205	79.24	≤102	≥30

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表 2 直径8 mm钨球冲击GH4169间隔靶实验结果

Table 2. Experimental results of 8 mm diameter tungsten ball impacting GH4169 spacer plates

实验	m_p/g	h₁/mm	h₂/mm	h₃/mm	v_i/(m·s⁻¹)	v_r/(m·s⁻¹)	Z₁/mm	Z₂/mm	Z₃/mm	贯穿类型
1	4.69	3.14	1.07	3.18	510.9		5.87	7.09	6.41	未贯穿
2	4.70	3.14	1.07	3.18	517.7		2.18	7.72	7.30	未贯穿
3	4.69	3.14	1.07	3.18	541.4		3.28	8.20	8.18	未贯穿
4	4.70	3.14	1.07	3.18	569.4		1.91	7.83	7.98	未贯穿
5	4.70	3.12	1.10	3.10	566.7		3.87	8.35	10.92	未贯穿
6¹⁾	4.70	3.14	1.07	3.18	563.6			8.23	12.18	未贯穿
7	4.70	3.18	1.05	3.14	562.6		2.98	6.68	9.78	未贯穿
8²⁾	4.70	3.18	1.05	3.14	685.7		2.91	5.84	15.86	贯穿
9	4.70	3.16	1.07	3.13	388.5		1.67	2.44	2.40	未贯穿
10	4.69	3.16	1.07	3.13	587.8		0.88	8.61	13.74	未贯穿
11	4.70	3.16	1.07	3.13	643.4	199.7	2.01	9.01	13.47	贯穿
12	4.69	3.16	1.07	3.13	618.4	158.4	1.00	7.64	13.85	贯穿
13³⁾	4.70	3.13	1.09	3.15	627.1		1.45	7.48		未贯穿
14	4.72	3.13	1.09	3.15	641.0		0.84	9.16	14.24	未贯穿
15	4.69	3.13	1.09	3.15	673.0	200.4	0.89	9.94	6.81	贯穿
16	4.71	3.13	1.09	3.15	647.2	132.1	1.09	8.71		贯穿
17	4.70	3.16	1.07	3.13	668.4	200.9	2.25	8.51	13.52	贯穿
1) 弹托嵌入第1层板；2) 弹体余速未测到；3) 弹体嵌入第3层板。

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表 3 根据实验数据拟合得到的Recht-Ipson模型参数

Table 3. Parameters in the Recht-Ipson model obtained by fitting experiments

拟合曲线	v₅₀/(m·s⁻¹)	a	p
v_50a	603.1	0.42	4.49
v_50b	644.1	0.40	5.39

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表 4 依据实验数据获得的模型参数

Table 4. Model parameters obtained from experimental data

弹体类型	k	v_srjump/(m·s⁻¹)
平头弹体	1.61	37.21
半球形头弹体	0.99	124.28
球形弹体	0.93	160.52

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