楔形罩线型聚能装药侵彻钢锭

武双章; 顾文彬; 李旭锋

doi:10.11883/1001-1455(2016)03-0353-06

楔形罩线型聚能装药侵彻钢锭

doi: 10.11883/1001-1455(2016)03-0353-06

解放军理工大学野战工程学院，江苏南京 210007

详细信息

作者简介:
武双章(1977—)，男，硕士，讲师

通讯作者:
顾文彬, guwenbin1@aliyun.com

中图分类号: O385;TD235.3
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- 被引次数: 0
出版历程
- 收稿日期: 2014-06-27
- 修回日期: 2014-10-16
- 刊出日期: 2016-05-25

Penetration of steel ingot by linear shaped charge with cuniform cove

Field Engineering Institute, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China

摘要

摘要: 为了获得楔形罩线型聚能装药射流侵彻钢锭的特点和规律，利用ANSYS/LS-DYNA软件建立了三维数值计算模型，并进行了数值模拟。在此基础上，进行了实际的切割实验：对于某一炸高条件，切割深度随时间的增加先快速增加，后缓慢增加；对于不同的炸高，切割深度随炸高的增加而缓慢增加，当炸高为40~60 mm和70~120 mm时，侵彻深度表现出对炸高的不敏感性；同时，获得了不同炸高条件下不同时刻的钢锭切口断面形状。结果表明，数值模拟和切割实验结果有很好的一致性，可以用该三维数值计算模型模拟实际切割器侵彻钢靶的过程，并获得其特点和规律。
- 爆炸力学 /
- 切割实验 /
- ANSYS/LS-DYNA软件 /
- 线型聚能装药 /
- 单角度楔形罩
Abstract: To obtain the characteristics and the mechanisms behind the penetration of steel ingot by linear shaped charge (LSC) with a cuniform cover, we built a three-dimensional numerical model using ANSYS/LS-DYNA program and performed a numerical simulation study. The actual cutting experiment was conducted on the basis of this numerical simulation and the following results were achieved: For a given standoff, the depth of LSC cutting steel ingot increases at first rapidly along with of time and then this increase gradually slows down; for different standoffs, the depth of LSC cutting steel ingot increases more slowly with the increase of the standoff. The penetration depth changes little at the standoffs ranging from 40 to 60 mm and from 70 to 120 mm, showing an insensitivity to the variation of the standoff. Different shapes of the cutting cross-sections of the steel ingot at different time were obtained under different conditions of the standoff. The results show that the penetration results of numerical simulation were consistent with those of the cutting experiment. Our three-dimensional numerical model can simulate the process of the penetration of the steel ingot by the real cutter. The characteristics and the mechanisms obtained can better reflect the actual cutting process.
- mechanics of explosion /
- cutting experiment /
- ANSYS/LS-DYNA program /
- linear shaped charge /
- single angle cuniform cover

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图 1 LSC和钢锭有限元模型

Figure 1. Finite model of LSC and steel ingot

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图 2 实验设置和切割效果

Figure 2. Experimental setup and cutting effect

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图 3 不同炸高时的侵彻深度

Figure 3. Penetration depths at different standoffs

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图 4 侵彻深度随炸高的变化

Figure 4. Penetration depths vs standoffs

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图 5 70 mm炸高时LSC切割钢锭过程

Figure 5. Processes of LSC cutting steel ingot at 70 mm standoff

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图 6 110 mm炸高时LSC切割钢锭过程

Figure 6. Processes of LSC cutting steel ingot at 110 mm standoff

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图 7 炸高不同时的切口断面形状

Figure 7. Shapes of cutting sections at different standoffs

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表 1 材料模型和状态方程

Table 1. Material models and state equations

部位	材料	模型	状态方程	单元尺寸/(mm×mm×mm)	单元数
装药	B炸药	HIGH_EXPLOSIVE_BURN	JWL	2.00×2.00×2.00	38 750
药形罩	纯铁	JOHNSON_COOK	Grüneisen	1.50×0.75×2.00	6 000
空隙	空气	NULL	Grüneisen	2.00×2.00×2.00	399 400~520 900
靶	45钢	JOHNSON_COOK	Grüneisen	2.00×2.00×2.00	120 000

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表 2 实验结果

Table 2. Experimental results

h/mm	P_num/mm	P_exp/mm	δ_Ρ/%
50	68.32	62.60	9.14
80	70.20	64.80	7.69
110	72.14	66.40	7.96

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