孔结构金属装甲抗弹能力的数值模拟

秦庆华; 崔天宁; 施前; 金永喜; 张建勋

doi:10.11858/gywlxb.20180530

孔结构金属装甲抗弹能力的数值模拟

doi: 10.11858/gywlxb.20180530

秦庆华^{1, 2,},
崔天宁^1,*, ,,
施前¹,
金永喜²,
张建勋¹

1.
西安交通大学航天航空学院机械结构强度与振动国家重点实验室, 陕西省航天结构振动控制工程实验室, 陕西西安 710049
2.
中国兵器工业第208研究所瞬态冲击技术重点实验室, 北京 102202

基金项目:

国家自然科学基金 11572234

国家自然科学基金 11502189

国家自然科学基金 11372235

瞬态冲击技术重点实验室基金 614260601010117

陕西省自然科学基础研究计划 2017JM1020

详细信息

作者简介:
秦庆华(1976—), 男, 博士, 副教授, 主要从事冲击动力学研究. E-mail: qhqin@mail.xjtu.edu.cn

通讯作者:
张建勋(1984—), 男, 副教授, 主要从事冲击动力学研究. E-mail: jianxunzhang@mail.xjtu.edu.cn

中图分类号: O347;O385
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出版历程
- 收稿日期: 2018-03-28
- 修回日期: 2018-04-12

Numerical Study on Ballistic Resistance of Metal Perforated Armor to Projectile Impact

QIN Qinghua^{1, 2
,},
CUI Tianning^{1,*
, ,},
SHI Qian¹,
JIN Yongxi²,
ZHANG Jianxun¹

1.
State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Engineering Laboratory for Vibration Control of Aerospace Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
2.
Science and Technology on Transient Impact Laboratory, No. 208 Research Institute of China Ordnance Industries, Beijing 102202, China

摘要

摘要: 采用数值模拟方法研究了高速弹体冲击下孔结构金属装甲的抗弹能力，系统讨论了弹体冲击速度、入射角、弹着点、孔径、孔间距等因素对抗弹能力的影响。结果表明，在弹道极限速度附近，随着弹体冲击速度的增加，弹着点效应逐渐变得不明显；弹体垂直入射不对称弹着点时会出现明显偏转，而倾斜入射时即使在对称弹着点上也会出现明显的偏转现象；当弹体入射角度大于45°时，弹体剩余速度和侵彻深度出现较明显的下降，当入射角度大于65°时，出现弹跳现象。
- 孔结构金属装甲 /
- 高速冲击 /
- 侵彻 /
- 贯穿 /
- 弹道极限
Abstract: In this paper, we numerically studied the ballistic resistance of the metal perforated armor to the high-velocity projectile, and analyzed in detail the effects of various factors on its ballistic resistance, including the impact velocity, the oblique angle, the hitting location and the size of holes.The results showed that the effect of hitting position decreases with the increase of the impact velocity near the ballistic limit.Both the normal impact at the asymmetric hitting position and the oblique impact at the symmetric hitting position result in the projectile yaw.The residual velocity of the projectile and the penetration depth decrease dramatically as the oblique angle is larger than 45°, and furthermore, the ricochet appears as the oblique angle is larger than 65°.
- metallic perforated armor /
- high-velocity impact /
- penetration /
- perforation /
- ballistic limit

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图 1 弹体冲击孔结构装甲板示意图

Figure 1. Perforated plate impacted by projectile

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图 2 孔结构尺寸及5个典型弹着点

Figure 2. Hole size and 5 typical hitting positions

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图 3 弹体侵彻孔结构装甲板后靶板的失效模式

Figure 3. Failure modes of perforated plates after penetration

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图 4 计算结果与实验结果^[6]对比

Figure 4. Comparison of numerical simulations and experimental results^[6]

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图 5 不同弹着点的弹体速度时程曲线

Figure 5. Velocity-time curves of projectiles at different hitting positions

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图 6 不同弹着点对应的剩余速度随入射速度的变化

Figure 6. Residual velocity vs. impact velocity of projectiles at different hitting positions

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图 7 不同弹着点对应的侵彻深度随入射速度的变化

Figure 7. Penetration depth vs. impact velocityof projectiles at different hitting positions

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图 8 弹体在侵彻弹着点Ⅱ和Ⅴ处的偏转角度

Figure 8. Yaw angles of projectiles at hitting positions Ⅱ and Ⅴ

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图 9 不同孔洞尺寸及弹着点条件下弹体的速度时程曲线

Figure 9. Velocity-time curves of projectiles under different hole sizes and hitting positions conditions

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图 10 弹体在不同孔洞尺寸基板上的侵彻深度

Figure 10. Penetration depth of basic plates with different hole sizes

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图 11 不同尺寸配置下弹体的偏转角度

Figure 11. Yaw angles of projectiles under different hole sizes conditions

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图 12 孔结构装甲板抗弹能力随入射角的变化

Figure 12. Changes of ballistic resistance of perforated plates with different impact angles

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图 13 弹体以30°和60°侵彻孔结构装甲板后的失效模式

Figure 13. Failure modes of targets penetrated by projectile with impact angles of 30° and 60°

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图 14 弹体以45°侵彻弹着点Ⅴ的失效模式

Figure 14. Failure modes of target penetrated by projectile at hitting position Ⅴ with impact angles of 45°

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表 1 钨合金和Secure 500高强钢的模型参数^{[6, 12]}

Table 1. Material model parameters for tungsten alloy and Secure 500 high hardness steel (HHS)^{[6, 12]}

Material	ρ/(g·cm^-3)	G/GPa	A/MPa	B/MPa	n	C	m	c_p/(J·g^-1·K^-1)	T_m/K	T₀/K	${{\dot \varepsilon }_0}$ /s^-1	D₁	D₂	D₃	c/(m·s^-1)	D₄	D₅	S₁	S₂	S₃	γ₀
Tungsten alloy	17.70	160	631	1 258	0.092	0.014	0.94	0.134	1 723	293	1.0	0.0	0.04	0.63	4 029	0.0	0.0	1.237	0.0	0.0	1.54
Secure 500 HHS	7.85	80	1 200	1 580	0.175	0.004	1.00	0.450	1 800	300	0.000 1	0.1	0.4	-1.3	4 570	0.05	0.0	1.730	0.0	0.0	1.67

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表 2 不同孔洞尺寸的孔结构装甲板

Table 2. Perforated plates with different hole sizes

Target	Hole size
Target	d/mm	s/mm	s/d
s/d1.25-1	10.80	13.50	1.25
s/d1.25-2	9.00	11.25	1.25
s/d1.50-1	9.00	13.50	1.50
s/d1.50-2	7.00	10.50	1.50
s/d2.00-1	6.75	13.50	2.00
s/d2.00-2	9.00	18.00	2.00
s/d2.50-1	5.40	13.50	2.50
s/d2.50-2	9.00	22.50	2.50

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参考文献(13)

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