高速破片撞击充液容器时容器壁面的损伤

马丽英; 李向东; 周兰伟; 蓝肖颖; 宫小泽; 姚志军

doi:10.11883/bzycj-2018-0009

高速破片撞击充液容器时容器壁面的损伤

doi: 10.11883/bzycj-2018-0009

1.
南京理工大学机械工程学院, 江苏南京 210094
2.
中国白城兵器试验中心, 吉林白城 137001

基金项目:

国家自然科学基金面上项目 11572159

详细信息

作者简介:
马丽英(1990-), 女, 硕士, maliying10102013@163.com

通讯作者:
李向东(1969-), 男, 博士, 教授, lixiangd@njust.edu.cn

中图分类号: O385
计量
- 文章访问数: 6666
- HTML全文浏览量: 2327
- PDF下载量: 82
- 被引次数: 0
出版历程
- 收稿日期: 2018-01-08
- 修回日期: 2018-04-13
- 刊出日期: 2019-02-05

Study on wall damage of vessel in high-speed fragment impact liquid-filled vessel

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Weapons Experimental Center, Baicheng 137001, Jilin, China

摘要

摘要: 为研究高速破片（钨球）撞击充液容器（贯穿前后壁面）时容器壁面的毁伤情况，利用ANSYS/LS-DYNA对该过程进行了数值模拟，分析了破片撞击动能对充液容器前后壁面毁伤程度的影响，并进行实验验证。结果表明：高速破片撞击充液容器形成的液压水锤对充液容器前后壁面的破坏程度可分为3个等级，即前后壁面均未出现裂纹、前壁面没有出现裂纹后壁面出现裂纹和前后壁面均出现裂纹且后壁面呈花瓣式开裂；破片撞击充液容器过程中，前后壁面的最大变形量和前后壁面的裂纹总数随破片撞击动能的增加而增大。
- 兵器科学与技术 /
- 高速破片 /
- 充液容器 /
- 液压水锤 /
- 壁面破坏 /
- 撞击 /
- 损伤
Abstract: We analyzed the influence of the impact energy on the damage degree of the front and rear walls and verified it by experiments. The results show that the hydrodynamic ram formed by a high-speed fragment impacting the liquid-filled vessel affects the vessel's front and rear walls and that the degree of the damage can be divided into three levels:the cracks are not observed on the front and rear walls; cracks are observed on the rear wall surface but on the front wall surface; cracks are observe on both front and rear walls and the rear wall is petal-type cracked. The maximum deformation of the front and rear walls and the total number of cracks in the front and rear walls increase with the increase of the impact energy of the fragments during the fragment impact process of the liquid-filled vessel.
- ordnance science and technology /
- high speed fragment /
- liquid-filled vessel /
- hydrodynamic ram /
- wall damage /
- impact /
- damage

HTML全文

图 1 有限元模型

Figure 1. Finite element model

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图 2 实验装置及布置示意图

Figure 2. Experiment device and layout diagram

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图 3 充液容器实物图

Figure 3. Liquid-filled vessel

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图 4 前后面板毁伤情况(实验和三维扫描)

Figure 4. Front and rear walls damage (experiment and three-dimensional scan)

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图 5 前后面板毁伤情况(实验与仿真)

Figure 5. Front and rear walls damage (experiment and numerical simulation)

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图 6 前后壁不同位置处峰值压力曲线

Figure 6. Front and rear wall pressure changes with distance

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图 7 不同阶段压力变化曲线

Figure 7. Pressure change curve in different stages

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图 8 前壁面不同位置处压力时间曲线

Figure 8. Pressure time curve at the different positions of the front wall

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图 9 后壁面不同位置处压力时间曲线

Figure 9. Pressure time curve at the different positions of the rear wall

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图 10 压力动能曲线

Figure 10. Pressure-kinetic energy curve

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图 11 容器前后壁面的变形情况(单位：mm)

Figure 11. Deformation of the front and rear walls change with time (unit: mm)

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图 12 前后壁面变形量时间曲线

Figure 12. Front and rear walls displacement time curve

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图 13 前壁面变形量时间曲线

Figure 13. Front wall displacement time curves

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图 14 后壁面变形量时间曲线

Figure 14. Rear wall displacement time curves

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图 15 破片撞击动能与充液容器前后壁面变形量的关系图

Figure 15. Relationship between the kinetic energy of the fragment and the deformation of the front and rear wall

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图 16 充液容器前后壁面的裂纹数量与破片撞击动能关系

Figure 16. Relationship between the kinetic energy of the fragment and the number of cracks in the front and rear walls

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表 1 前后面板材料参数

Table 1. Material parameters of front and rear walls

材料	ρ/(kg·m^-3)	E/GPa	μ	A/MPa	B/MPa	C	n	m
铝2024-T4	2797	69.63	0.33	265	462	0.015	0.34	1.0
注：ρ-密度，E-弹性模量，μ-泊松比，A-屈服强度，B-应变硬化洗漱，C-应变率相关系数，n-应变硬化指数，m-温度相关系数.

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表 2 Grüneisen状态方程参数

Table 2. Parameters of Grüneisen EOS

体积声速/(m·s^-1)	u_s-u_p曲线斜率	Grüneisen常数
5 286	1.4	2.0

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表 3 破片材料参数

Table 3. Material parameters of fragment

材料	密度/(kg·m^-3)	弹性模量/GPa	泊松比
钨	17 600	350	0.284

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表 4 水和空气的主要材料参数表

Table 4. Material parameters of water and air

材料	密度/(kg·m^-3)	体积声速/(m·s^-1)	u_s-u_p曲线斜率	C₄	C₅
水	1 000	1 480	1.979	-	-
空气	1.25	-	-	0.4	0.4

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表 5 部分实验情况及结果表

Table 5. Part of the experimental situation and results

日期-发序	m/g	v₀/(m·s^-1)	v_r/(m·s^-1)	E₀/J	δ_f/cm	δ_r/cm
2016.12.23 -2	4.04	768	453	1 191.44	0.17	0.61
2016.12.23-3	4.03	1 049	699	2 217.31	0.48	0.98
2016.12.23-4	4.04	1 097	757	2 430.87	0.64	1.23
2016.12.23-5	4.01	1 399	933	3 924.19	0.68	2.87
2016.12.23-8	4.05	1 560	1 066	4 928.04	0.98	2.48
2017.03.26-1	8.10	1 028	755.8	4 279.98	0.69	2.69
2017.03.26-2	8.04	1 077.5	772.8	4 667.25	0.56	1.77
2017.03.26-3	8.14	1 026.7	740.1	4 290.24	0.59	21.9
2017.03.26-7	8.09	885.7	594.14	3 173.16	0.44	1.65
2017.03.26-8	8.08	1 130	808	5 158.68	0.70	3.14
2017.04.15-1	8.11	724.8	551.9	2 130.23	0.49	1.67
2017.04.15-2	8.06	1 238	948.1	6 176.56	1.19	4.12
2017.04.15-5	8.12	1 417	1 010	8 152.03	1.35	4.36
2017.04.15-6	8.11	1 554	1 082	9 792.48	1.31	4.07
注：m-破片质量，v₀-破片撞击速度，v_r-破片穿出容器后剩余速度，E₀-破片撞击动能，δ_f-前壁面最大变形量，δ_r-后壁面最大变形量

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表 6 试验与数值仿真中破片剩余速度对比

Table 6. Comparison of residual velocities in experiment and numerical simulation

日期-发序	E₀/J	v_r/(m·s^-1)		误差/%	δ_f/cm		误差/%	δ_r/cm		误差/%
日期-发序	E₀/J	实验	计算	误差/%	实验	计算	误差/%	实验	计算	误差/%
2016.12.23-2	1 191	453	429	5.3	0.17	0.19	-11.76	0.61	0.66	-8.20
2017.03.26-2	4 667	772.8	761	1.4	0.56	0.63	-12.5	1.77	1.57	11.29
2017.04.15-6	9 792	1 082	1123.9	-3.9	1.31	1.29	1.5	4.07	3.49	14.25

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