结构间隙对夹芯式复合装甲结构抗侵彻性能的影响

张元豪; 程忠庆; 侯海量; 李艳茹

doi:10.11883/bzycj-2019-0270

结构间隙对夹芯式复合装甲结构抗侵彻性能的影响

doi: 10.11883/bzycj-2019-0270

张元豪^{1, 2,},
程忠庆²,
侯海量^1, ,,
李艳茹²

1.
海军工程大学舰船与海洋学院，湖北武汉 430033
2.
海军勤务学院，天津 300450

基金项目: 国家自然科学基金（51679246）；国家安全重大基础研究（6133050102）

详细信息

作者简介:
张元豪（1992－　），男，博士，158241904@qq.com

通讯作者:
侯海量（1977－　），男，博士，副教授，hou9611104@163.com

中图分类号: O382; O344.7
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- 被引次数: 0
出版历程
- 收稿日期: 2019-07-09
- 修回日期: 2019-09-10
- 网络出版日期: 2019-10-25
- 刊出日期: 2019-12-01

Influence of structural interspace on anti-penetration performance of sandwich composite armor system

1.
College of Warship and Ocean, Naval University of Engineering, Wuhan 430033, Hubei, China
2.
Naval Logistics College of PLA, Tianjin 300450, China

摘要

摘要: 采用由厚度为8 mm的前置钛合金板、面密度为60 kg/m²的高强聚乙烯纤维增强复合材料层合板抗弹芯层、厚度为8 mm的后置钢板构成的夹芯式复合装甲，模拟舰船舷侧复合夹芯舱壁结构。根据面板与芯层间是否设置20 mm的间隙，将复合装甲结构定义为无间隙式、后间隙式及前后间隙式。为研究以上3种结构在55 g圆柱体弹高速冲击下的抗弹性能及破坏机理，开展了系列弹道实验，分析了钛合金板、高强聚乙烯纤维增强复合材料层合板芯层及钢质面板的破坏模式，探讨了结构间隙对复合装甲结构抗弹性能的影响。结果表明：前置钛合金板的破坏模式为剪切冲塞，靶板背弹面产生脆性断裂并伴随碎块崩落现象；聚乙烯纤维增强复合材料板的破坏模式及钢质背板的变形范围受间隙的影响较大，前置钛合金板受间隙影响较小；相同载荷侵彻下，间隙的存在有利于提高复合装甲结构的抗弹性能。
- 复合装甲 /
- 结构间隙 /
- 钛合金 /
- 高强聚乙烯纤维增强复合材料 /
- 高速冲击
Abstract: A sandwich composite armor consisting of an 8 mm thickness front titanium alloy plate, a 60 kg/m² planar density high-strength polyethylene fiber reinforced composite laminate core layer and an 8 mm thickness rear steel plate was used to simulate the structures of composite sandwich bulkheads on ship sides. According to whether there was an interspace of 20 mm between the panel and the core, the composite armor structures were defined as non-interspace type, back interspace type and front-back interspace type. In order to study the anti-penetration performance and failure mechanism of the above three structures under high-speed impact of a cylindrical projectile with the mass of 55 g, a series of ballistic tests were carried out. The failure modes of the titanium alloy plate, the ultra-high molecular weight polyethylene fiber-reinforced composite laminate core, and the steel panel were analyzed, and the influence of the structural interspace on the anti-penetration performances of the composite armor structures was obtained. The results show that the failure mode of the front titanium alloy plate is shear plugging, brittle fracture occurs on the bullet surface of the target plate and is accompanied by debris collapse; that the failure mode of the polyethylene fiber reinforced composite plate and the deformation range of the steel back plate are greatly affected by the interspace, while the front titanium alloy plate is less affected by the interspace; and that the existence of interspace is beneficial to improve the anti-penetration performances of the composite armor structures.
- composite armor /
- structural interspace /
- titanium alloy /
- high strength polyethylene fiber reinforced composite /
- high-speed impact

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图 1 复合装甲结构形式示意图及实验布置

Figure 1. Sketches of sandwich armor structures and experimental setup

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图 2 实验装置示意图

Figure 2. Schematic diagram of the experimental device

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图 3 工况1前面板破坏形貌

Figure 3. Failure morphologies of the front panel in Test 1

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图 4 工况2前面板破坏形貌

Figure 4. Failure morphologies of the front panel in Test 2

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图 5 弹体入射姿态

Figure 5. Incident attitudes of projectiles

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图 6 聚乙烯板破坏形貌

Figure 6. Failure morphologies of polyethylene panels

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图 7 后面板破坏形貌

Figure 7. Failure morphologies of rear panels

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表 1 面板材料力学性能

Table 1. Mechanical properties of panel materials

材料	E/GPa	ρ/（kg·m⁻³）	µ	σ_y/MPa	σ_b/MPa	δ_s/%
钛合金	110	4 500	0.36	922	986	15.5
921A 钢	210	7 800	0.30	590	750	23

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表 2 实验结果

Table 2. Experimental results

试验工况	靶板类型	厚度/mm	ρ_a/（kg·m⁻²）	v₀/（m·s⁻¹）	v_r/（m·s⁻¹）	E_a/（J·m²·kg⁻¹）
1	Ⅰ	8/60/8	162.09	1 628.0	713.1	363.39
2	II	8/60/20/8	161.45	1 687.0	752.9	388.20
3	III	8/20/60/20/8	161.93	1 657.0	632.6	398.32
注：未计算气凝胶毡面密度。

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