运动装药空中爆炸冲击波特性研究

蒋海燕; 李芝绒; 张玉磊; 苏健军

doi:10.11858/gywlxb.2017.03.010

运动装药空中爆炸冲击波特性研究

doi: 10.11858/gywlxb.2017.03.010

西安近代化学研究所, 陕西西安 710065

详细信息

作者简介:
蒋海燕(1985-), 女, 博士, 副研究员, 主要从事武器终点效应及毁伤效能评估研究.E-mail:jianghaiyan19851@163.com

中图分类号: O382.1;O354.5
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出版历程
- 收稿日期: 2016-07-07
- 修回日期: 2016-08-25

Characteristics of Air Blast Wave Field for Explosive ChargeMoving at Different Velocities

Xi'an Modern Chemistry Research Institute, Xi'an 710065, China

摘要

摘要: 利用AUTODYN对不同速度装药的空中爆炸冲击波场进行数值计算, 定量研究运动装药空中爆炸冲击波场特性。仿真结果表明:装药速度对冲击波场的时空分布有较大影响, 爆炸初期冲击波场的移动速度和位移与装药速度正相关; 动爆冲击波场为空间非均匀分布, 超压值随着与装药运动方向夹角的增大近似呈余弦变化, 由大于静爆超压值逐渐降低为小于静爆超压值, 且变化幅度均随装药速度的增加而增大。最后, 分析了动爆与静爆冲击波场的关联特性, 建立了动爆冲击波超压的工程计算模型, 模型计算结果与动爆试验结果及仿真计算结果吻合较好。
- 空中爆炸 /
- 运动装药 /
- 冲击波场 /
- 数值计算
Abstract: To quantitatively study the air blast wave field characteristics of the explosive charge moving at different velocities, we carried out simulations using AUTODYN software.The simulation results show that the charge velocity exerts great influence on the time-space distribution of the blast wave field.At the initial stage of the explosion, the moving speed and the displacement of the blast wave field are positively correlated with the charge velocity.The space distribution of the dynamic blast wave is non-uniform, the relation of the blast wave's overpressure with the angle is approximately cosine function, and the variation amplitude increases along with the increase of charge velocity.Also, we analyzed the correlation between the static and the dynamic blasting shockwave field, and established the engineering calculation model for the dynamic blasting shock wave overpressure.The modeling results agree well with the dynamic experimental and simulation results.
- air blast /
- moving explosive charge /
- blast wave field /
- numerical simulation

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图 1 数值计算模型

Figure 1. Simulation model

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图 2 不同速度装药的爆炸冲击波流场演化云图

Figure 2. Blast wave field evolution of charge with different velocities

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图 3 冲击波场中心速度随半径的变化

Figure 3. Velocity of the center ofblast wave field vs.radius

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图 4 冲击波场中心位移随时间的变化

Figure 4. Displacement of the center ofblast wave field vs.time

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图 5 冲击波场半径随时间的变化

Figure 5. Radius of blast wave field vs.time

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图 6 不同测点的压力时程曲线

Figure 6. Pressure-time histories at different gauge points

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图 7 超压峰值曲线

Figure 7. Overpressure peak curves

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图 8 动爆冲击波模型

Figure 8. Dynamic blast wave model

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表 1 Pentolite炸药的结果对比

Table 1. Comparison of results for Pentolite

Round No.	R/(mm)	θ/(°)	p_d/(kPa)			Relative error/(%)
Round No.	R/(mm)	θ/(°)	Model	Test	Sim.	Compared with test	Compared with simulation
	850.39	13.80	735.70	572.28	552.08	-22.21	3.66
	856.49	15.30	716.39	549.09	541.27	-23.35	1.44
	838.20	43.20	579.18	537.04	532.01	-7.28	0.95
	853.44	44.30	444.04	510.63	505.90	15.00	0.93
582	822.96	73.00	528.85	482.13	440.03	-8.83	9.57
	844.30	73.40	447.49	451.41	412.23	0.88	9.50
	807.72	103.40	414.39	411.25	376.77	-0.76	9.15
	798.58	134.20	332.34	344.71	305.28	3.72	12.92
	798.58	165.30	350.27	303.17	287.26	-13.45	5.54
	822.96	14.10	578.49	610.13	595.24	5.47	2.50
	829.06	15.90	608.83	596.92	586.35	-1.96	1.80
	816.86	44.40	598.49	570.90	566.50	-4.61	0.78
	835.15	45.70	565.39	536.47	529.53	-5.11	1.31
587	813.82	74.80	444.04	490.18	447.38	10.39	9.57
	841.25	75.30	468.86	450.17	408.93	-3.99	10.09
	838.20	104.80	386.12	373.16	343.00	-3.36	8.79
	813.82	105.30	336.48	398.66	366.35	18.48	8.82
	832.10	164.10	309.59	278.23	265.61	-10.13	4.75
Note: The charge velocity is 536.40 m/s.

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表 2 B炸药的结果对比

Table 2. Comparison of results for Composition B

R/(mm)	θ/(°)	p_{p, d}/(kPa)			Relative error/(%)
R/(mm)	θ/(°)	Model	Test	Sim.	Compared with test	Compared with simulation
	15	637.57	627.45	609.10	1.61	4.67
826.00	45	584.29	565.39	566.18	3.34	3.20
	105	406.00	361.99	368.33	12.16	10.23
Note: The charge velocity is 534.30 m/s.

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