聚能装药载荷下混凝土破坏行为的实验研究

王刚; 许香照; 郑楷

doi:10.11858/gywlxb.2016.04.003

聚能装药载荷下混凝土破坏行为的实验研究

doi: 10.11858/gywlxb.2016.04.003

王刚^1,,
许香照^2,*, ,,
郑楷²

1.
北京航天长征飞行器研究所，北京 100076
2.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081

详细信息

作者简介:
王刚 (1978—), 男，硕士，高级工程师，主要从事飞行器设计研究.E-mail:17710058351@189.cn

通讯作者:
许香照 (1989—), 男，博士研究生，主要从事冲击动力学研究.E-mail: xuxiangxuxiangz@bit.edu.cn

中图分类号: O383.2;O389
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出版历程
- 收稿日期: 2016-04-07
- 修回日期: 2016-05-18

Experimental Investigation on the Concrete Damage Behaviorunder the Shaped-Charge Loading

WANG Gang^1
,,
XU Xiang-Zhao^{2,*
, ,},
ZHENG Kai²

1.
Beijing Institute of Space Long March Vehicle, Beijing 100076, China
2.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 聚能装药侵彻混凝土靶板的研究主要集中在聚能装药的材料、结构、侵彻深度和侵彻孔径大小方面，少有涉及整个混凝土靶板的破坏行为, 但混凝土靶的整体破坏行为对整个聚能装药的侵彻毁伤效能评估有至关重要的作用。为更好地判定聚能装药对混凝土靶体的破坏程度，开展了大口径聚能装药侵彻大尺寸混凝土靶的实验研究。对实验后的混凝土靶板进行剖切，从混凝土靶的内部剖切面观测不同位置处混凝土靶的损伤程度，并对各个位置处的孔洞直径进行测量，获取孔洞的完整尺寸。在过孔洞中心的同一截面上切割边长为10cm的标准混凝土试件，并对其进行抗压强度测试，根据测试结果评估混凝土靶板的整体破坏行为，进而得到混凝土靶在聚能装药载荷下的破坏行为。测试结果表明，混凝土靶板的背板拉伸破坏半径约为110cm；以孔洞中心为轴，半径小于100cm内的混凝土损伤较严重，边界块体强度约为原始强度的40%；半径在100~140cm范围内混凝土的损伤不大，混凝土试件的强度约为原始强度的72%；当半径大于140cm后，聚能装药对混凝土的影响较弱，混凝土几乎未出现损伤。
- 聚能侵彻 /
- 混凝土 /
- 强度测试 /
- 爆炸与冲击
Abstract: The research of shaped-charge penetrating concrete target focuses on the material and the structure of the shaped-charge, penetration depth and penetration aperture size, but seldom involves the destruction of a concrete target board.However, the determination of whose overall damage behavior plays a significant role in the penetration effectiveness evaluation of the shaped-charge on the concrete.In the present work, to make up for this defect, we carried out experiments of the heavy-caliber shaped-charges penetrating a large-size concrete target.After the experiment, we cut the concrete target to assess its damage under the shaped-charge loading.We evaluated the concrete target damage at different locations from inside the target and measured the hole diameters at different locations.Cube concrete specimens with a side length of 10cm were also obtained in the same damaged section across the hole center.The strength test results show that the reflective stretching damage radius is about 110cm; the concrete damage is severe within a 100cm radius, and the compressive strength of the concrete specimen at the border within this radius range is about 30MPa, which is about 40% of the original compressive strength; the compressive strengths of the concrete specimens within the scope of the radius 100-140cm are similar and are all around 46MPa, which is about 72% of the original compressive strength; when the radius is larger than 140 cm, the concrete damage is negligible.
- shaped-charge penetration /
- concrete /
- strength test /
- explosion and impact

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图 1 射流成型过程

Figure 1. Shaped-charge forming process

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图 2 聚能装药尺寸及结构

Figure 2. Dimensions and structure of the shaped-charge

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图 3 靶板及实验布置

Figure 3. Concrete target and experimental arrangement

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图 4 压缩破坏前、后的混凝土材料试件

Figure 4. Concrete material specimens before and after compressed damage

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图 5 实验后的混凝土靶板

Figure 5. The concrete target after experiment

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图 6 混凝土表面的开坑半径和深度

Figure 6. The radius and depth of the concrete surface open pit

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图 7 材料试验机和16通道应变仪

Figure 7. Material testing machine and16-channel strain gauge

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图 8 混凝土试件取样分布图及部分试件

Figure 8. Concrete specimen sampling distribution and the polished concrete specimen

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图 9 部分测试结果

Figure 9. Part of the test results

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图 10 混凝土试件强度分布

Figure 10. Concrete specimens intensity distribution

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表 1 炸药的材料参数

Table 1. Material parameters of the explosive composition B

Density/(g/cm³)	Detonation velocity/(m/s)	C-J pressure/(GPa)	Initialinternal energy/(J/g)
1.67	7980	29.5	0.085

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表 2 药型罩的材料参数

Table 2. Material parameters of the linear

Density/(g/cm³)	Elasticmodulus/(GPa)	Yieldstrength/(MPa)	Possion'sratio
7.806	210	275	0.3

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表 3 混凝土材料强度测试结果

Table 3. Concrete material strength test results

Test No.	Compressive strength/(MPa)
1^#	69.4
2^#	70.3
3^#	68.6

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表 4 强度测试结果

Table 4. Comprehensive strength test results

Group	H/(cm)	Concretespecimen label	Compressivestrength/(MPa)
T-1	15	B-31	21.2
		B-32	37.1
		C-41	46.6
		C-42	53.4
T-2	55	B-11	36.5
		B-12	44.1
		C-31	46.1
		C-32	55.1
		C-33	57.7
T-3	105	B-21	40.9
		B-22	49.0
		C-21	59.3
T-4	155	C-01	46.8
		C-11	59.3
		C-12	66.8
T-5	195	B-01	26.5
		B-02	31.8
		B-03	53.7
		C-51	68.4
		C-52	71.5

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