弹头部结构对侵彻层合靶的影响

董玉财; 杜忠华; 刘荣忠; 刘杰

doi:10.11858/gywlxb.2014.03.015

弹头部结构对侵彻层合靶的影响

doi: 10.11858/gywlxb.2014.03.015

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(11372142)；江苏省普通高校研究生创新计划项目(CXZZ13_1223)

详细信息

作者简介:
董玉财(1986—)，男，博士研究生，主要从事冲击动力学和弹药工程研究.E-mail:kingdongyufeng@163.com

中图分类号: TJ413.2
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出版历程
- 收稿日期: 2013-04-10
- 修回日期: 2013-06-15

Influence of the Nose Structure on Penetration into Laminated Target

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

摘要

摘要: 对4种不同头部形状杆式侵彻体斜侵彻层合靶过程，进行了数值模拟和试验研究。从开坑过程中质量的侵蚀情况以及靶后动能的角度，对开坑及侵彻能力进行评估。通过研究不同结构侵彻体对靶板斜侵彻的影响，得出了侵彻体动能随时间的变化规律。仿真和实验结果表明，不同头部结构对开坑作用有影响，继而影响后续杆体的侵彻过程。还发现铝风帽穿甲块头部结构对倾斜的层合靶侵彻最为有利，并对该头部的侵彻优势进行了分析, 这将会对其它类似侵彻体头部结构优化提供一定的参考。
- 头部结构 /
- 层合靶 /
- 数值模拟 /
- 试验 /
- 开坑 /
- 穿甲块
Abstract: The experimental and simulation studies were carried out for the 4 different nose structures of rod penetrator oblique penetrating into three-layer laminated target.For the different types of nose structures, the ability of their penetration was assessed by crater formed in the erosion of quality as well as the kinetic energy behind target.Through the description of the penetration, the changing rules of kinetic energy with time were obtained for different nose structural penetrators respectively.The experimental and simulation results indicate that the nose structures are influential for crater forming, and then the process of crater formation will directly affect the subsequent process of penetration.From the investigation, it is found out that the aluminum ogive armor-piercing block nose of structure is the most favorable in the three-layer laminated targets of penetration, and we also have analysised the penetration advantage of this nose structure, which will serve as a reference to optimize the structure of other similar penetrators.
- nose structure /
- laminated target /
- numerical simulation /
- experiment /
- crater formation /
- armor-piercing block

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图 1 侵彻体的头部结构

Figure 1. Nose structure of penetrators

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图 2 仿真结构的初始状态

Figure 2. Initialization of the simulation structure

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图 3 t=60 μs时各种侵彻体的侵彻情况

Figure 3. The targets situation of penetration at t=60 μs

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图 4 t=150 μs时各种侵彻体的侵彻情况

Figure 4. The targets situation of penetration at t=150 μs

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图 5 侵彻体能量随时间的变化曲线

Figure 5. The kinetic energy curve of penetrator with time

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图 6 侵彻体质量随时间变化曲线

Figure 6. The mass curve of penetrator with time

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图 7 试验弹丸

Figure 7. Test projectile

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图 8 (c) 型侵彻体在1 455 m/s下3层靶板的弹坑相片

Figure 8. Crater photos of three target layers, (c)-type penetrator with the speed of 1 455 m/s

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图 9 (d) 型侵彻体在1 582 m/s下3层靶板的弹坑相片

Figure 9. Crater photos of three target layers, (d)-type penetrator with the speed of 1 582 m/s

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图 10 加速度矢量图

Figure 10. Acceleration vector diagram

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图 11 穿甲块碰靶

Figure 11. Piercing block impacting target

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表 1 弹芯结构基本质量

Table 1. Basic quality of penetrators' structure

Label	Structure name	Nose of mass/(g)	Total mass of penetrator/(g)
(a)	Nose of sectional cone shaped	4.6	52.0
(b)	Overall tungsten prong	4.4	51.8
(c)	Nose of aluminum ogive and piercing block	4.2	51.6
(d)	Overall tungsten flat nose	4.3	51.7

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表 2 Johnson-Cook材料参数^[10]

Table 2. Material parameters of Johnson-Cook^[10]

Material	ρ/(g/cm³)	E/(GPa)	μ	A/(MPa)	B/(MPa)	C	n	m	T_melt/(K)	T_room/(K)
93W	17.60	350	0.28	1 506	177	0.008	0.12	1.0	1 450	294
L4	2.77	69	0.33	426	265	0.015	0.34	1.0	775	294
RHA603	7.85	210	0.22	792	180	0.016	0.12	1.0	1 520	294

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表 3 试验及仿真结果

Table 3. The result of experiment and simulation

No.	Type	Penetrator mass/(g)	v/(m/s)	Penetration effect	Experiment/(m/s)	Simulation/(m/s)
1	(a)	51.4	1 395	Ⅲ target not penetrated	v_s0≥1 650	v_s0≈1 690
2	(a)	51.5	1 458	Ⅲ target not penetrated
3	(a)	51.6	1 629	Ⅲ target not penetrated
4	(a)	51.7	1 637	Ⅲ target not penetrated
5	(a)	51.2	1 650	Ⅲ target high-back convex
6	(b)	51.6	1 467	Ⅲ target not penetrated	v_s0≈1 593	v_s0≈1 590
7	(b)	51.4	1 574	Ⅲ target not penetrated
8	(b)	51.8	1 593	Ⅲ target drift plug penetrated
9	(c)	51.2	1 375	Ⅲ target not penetrated	v_s0≈1 478	v_s0≈1 460
10	(c)	51.5	1 430	Ⅲ target not penetrated
11	(c)	51.9	1 455	Ⅲ target not penetrated
12	(c)	51.4	1 478	Ⅲ target penetrated
13	(d)	51.8	1 485	Ⅲ target not penetrated	v_s0≈1 582	v_s0≈1 580
14	(d)	51.7	1 532	Ⅲ target dorsal fissure
15	(d)	51.9	1 582	Ⅲ target drift plug penetrated

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