钨纤维增强金属玻璃复合材料分段弹体侵彻性能研究

陈建良; 李继承

doi:10.11883/bzycj-2019-0379

钨纤维增强金属玻璃复合材料分段弹体侵彻性能研究

doi: 10.11883/bzycj-2019-0379

陈建良^1,2,,
李继承^1,2, ,

1.
中国工程物理研究院总体工程研究所，四川绵阳 621999
2.
工程材料与结构冲击振动四川省重点实验室，四川绵阳 621999

基金项目: 国家自然科学基金（11602258）

详细信息

作者简介:
陈建良（1991－　），男，硕士，研究实习员, chenjl5229@163.com

通讯作者:
李继承（1984－　），男，博士，副研究员, lijc401@caep.cn

中图分类号: O385
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- 被引次数: 0
出版历程
- 收稿日期: 2019-10-08
- 修回日期: 2020-02-24
- 网络出版日期: 2020-06-02
- 刊出日期: 2020-06-01

Ballistic behavior of tungsten fiber/metallic glass matrix composite segmented rods

CHEN Jianliang^{1,2
,},
LI Jicheng^{1,2
, ,}

1.
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
2.
Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621999, Sichuan, China

摘要

摘要: 结合穿甲实验，基于复合材料细观有限元模拟，系统开展针对钨纤维增强金属玻璃复合材料分段弹体侵彻性能的研究，并与复合材料长杆弹进行对比分析。结果表明，相对于复合材料长杆弹显著的穿甲“自锐”行为和优异的侵彻性能，复合材料分段弹体在侵彻过程中的“自锐”特性有所减弱，且弹体结构容易发生分散，进而导致弹体侵彻能力明显降低。另外，分段数目和分段间隔等因素对复合材料分段弹体的侵彻性能具有一定影响，但总体而言，不同构型分段弹体的侵彻能力均弱于复合材料长杆弹。
- 金属玻璃复合材料 /
- 分段弹体 /
- 侵彻 /
- 自锐 /
- 有限元
Abstract: Integrated with the relevant penetrating tests, the ballistic behavior of the tungsten fiber/metallic glass matrix (WF/MG) composite segmented rod is systematically investigated based on the meso-scale finite element method (FEM), and the comparative analysis on the penetrating performance is conducted between the composite segmented rod and the composite long rod. Related analysis shows that the composite long rod has the remarkable “self-sharpening” behavior as well as good penetrating performance, the “self-sharpening” in the composite segmented rod is less significant, and particularly, dispersal of the reinforced fibers is easily to occur in the structure. Correspondingly, the penetrating capability in the composite segmented rod is remarkably weakened compared with that in the long rod. In addition, the segmental number and the segmental interval have considerable effects on the ballistic behavior; however, the penetrating performance of the composite segmented rods with various structures is always lower than that of the composite long rod.
- tungsten fiber/metallic glass matrix composite /
- segmented rod /
- penetration /
- self-sharpening /
- finite element method (FEM)

HTML全文

图 1 钨纤维增强金属玻璃复合材料长杆弹及其侵彻数值模型示意图

Figure 1. Tungsten fiber / metallic glass matrix composite of long rod and schemetic sketch of penetrating test

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图 2 钨纤维增强金属玻璃复合材料短杆弹及其有限元模型

Figure 2. Tungsten fiber/metallic glass matrix composite short rod and the corresponding finite element geometrical model

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图 3 钨纤维增强金属玻璃复合材料分段弹体结构示意图

Figure 3. Schemetic of the tungsten fiber/metallic glass matrix composite segmented rods

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图 4 复合材料长杆弹在不同侵彻条件下的弹靶变形和破坏形貌

Figure 4. Deformation and failure of the composite long rod and the target under different penetrating conditions

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图 5 复合材料短杆弹在v₀=1 886 m/s条件下的弹靶变形和破坏形貌

Figure 5. Deformation and failure of the composite short rod and the target at v₀=1 886 m/s

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图 6 弹体残余形貌

Figure 6. Residual shape of projectiles after penetration

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图 7 侵彻过程中不同弹体的速度变化曲线

Figure 7. Variations of rod velocity during the penetration

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图 8 C1工况(N=3和λ=0)下分段弹体在v₀=1 406.8 m/s条件下的侵彻历程

Figure 8. Penetrating process of the segmented rod in the case of C1 (N=3 and λ=0) under v₀=1 406.8 m/s

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图 9 C7工况(N=3和λ=2)下分段弹体在v₀=1 406.8 m/s条件下的侵彻历程

Figure 9. Penetrating process of the segmented rod in the case of C7 (N=3 and λ=2) under v₀=1 406.8 m/s

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图 10 不同工况条件下弹体关键点位置速度随分段数目的变化特征

Figure 10. Velocity characteristics in the key points with segmental number in different cases

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图 11 不同工况条件下弹体侵彻深度随分段数目的变化特征

Figure 11. Penetration depth characteristics with the segmental number in different cases

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图 12 不同工况条件下弹体关键点位置速度随分段间隔的变化特征

Figure 12. Velocity characteristics in the key points with segmental interval in different cases

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图 13 不同工况条件下弹体侵彻深度随分段间隔的变化特征

Figure 13. Penetration depth characteristics with the segmental interval in different cases

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表 1 钨纤维增强金属玻璃复合材料分段弹体结构特征

Table 1. Geometries of the tungsten fiber / metallic glass matrix composite segmented rods

工况	N	L/mm	S/mm	λ	l_A/mm	l_B/mm	l_C/mm
C1	3	36.7	0	0	36.7	73.4	110.0
C2	6	18.3	0	0	36.7	73.4	110.0
C3	18	6.1	0	0	36.7	73.4	110.0
C4	3	36.7	36.7	1	36.7	110.0	183.4
C5	6	18.3	18.3	1	55.0	128.3	201.6
C6	18	6.1	6.1	1	67.2	140.6	213.9
C7	3	36.7	73.4	2	36.7	146.7	256.7
C8	6	18.3	36.7	2	73.4	183.3	293.3
C9	18	6.1	12.2	2	97.8	207.8	317.8

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表 2 锆基金属玻璃的修正热力耦合模型参数^{[17- 18]}

Table 2. Mechanical properties of the Zr-based metallic glass and parameters in the modified coupled thermo-mechanical constitutive model^{[17- 18]}

ρ/(kg·m⁻³)	E/GPa	ν	T₀/K	T_g/K	T_m/K	f/s⁻¹	Ω/m³
6 125	96	0.36	300	625	993	1×10¹³	2.5×10⁻²⁹

V^*/m³	c_V/(J·kg⁻¹·K⁻¹)	ξ₀	ξ_c	α	n_D	Λ_C	Λ_T
2×10⁻²⁹	400	0.05	0.065	0.05	3	0.05	0.35

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表 3 金属材料的Johnson-Cook模型参数

Table 3. Johnson-Cook model parameters of metallic materials

材料	ρ/(kg·m⁻³)	E/GPa	ν	T_r/K	T_m/K	A/MPa	B/MPa	n	C	m	${\dot \varepsilon _0}$/s⁻¹
95W钨合金	17 900	410	0.28	300	1 752	1 650	450	0.12	0.016	1.00	1
30CrMnMo钢	7 850	200	0.29	300	1 793	1 200	310	0.26	0.014	1.03	1
LY-9铝合金	2 700	68.9	0.33	300	925	270	154	0.22	0.130	1.34	1

材料	c_V/(J·kg⁻¹·K⁻¹)	D₁	D₂	D₃	D₄	D₅	c₀/(m·s⁻¹)	S₁	γ₀	α
95W钨合金	134	3.0	0	0	0	0	3 850	1.44	1.58	0
30CrMnMo钢	477	3.2	0	0	0	0	4 578	1.38	1.67	0.47
LY-9铝合金	910	2.5	0	0	0	0	5 200	1.40	1.97	0.48

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表 4 侵彻实验数据以及相应数值模拟结果

Table 4. Penetrating test data and the corresponding simulation results

弾型	撞击速度v₀/ (m·s⁻¹)	实验侵彻深度/ mm	模拟侵彻深度/mm
弾型	撞击速度v₀/ (m·s⁻¹)	实验侵彻深度/ mm	二维	三维
长杆弹	1 406.8	92	89.6	88.9
长杆弹	1 565.5	贯穿	贯穿	贯穿
短杆弹	1 886.0	32	34.5	34.7

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