Experimental Study and Numerical Simulation of Plane Flyer Driven by Detonation of JO-9159 and JB-9014 Composite Charge
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摘要: 为了研究串联复合药柱(JO-9159/JB-9014)结构尺寸对能量输出的影响，采用有限元软件AUTODYN对标准平面飞片实验进行数值模拟，并进行了实验验证，结果表明，飞片速度实验值与计算值的相对误差为0.2%~3.0%，比动能相对误差为0.4%~6.0%，因此模型是可信的。利用该模型及材料物性参数，对不同高度比的串联复合装药结构进行数值计算，研究结构尺寸变化和复合装药能量释放的规律，得到高能炸药和钝感炸药尺寸比与飞片速度的指数关系公式。数值模拟研究表明, 随着高能炸药组成增加，爆轰驱动飞片的第1峰值速度和第2峰值速度越来越接近，而钝感炸药组成较大时，第1峰值速度较第2峰值速度较小，整个速度历史随着时间的推移有较大的跃升过程。Abstract: In order to research the characteristic of how the scale of series composite charge explosives (JO-9159/JB-9014) affect energy output, FEM software AUTODYN was used to simulate the plane flyer test, and relevant experiments were carried out to verify the result of analog.It is showed that the relative error of the velocity of the flyer between experimental value and calculated value is 0.2%-3.0% and the relative error of the ratio dynamic energy is 0.4%-6.0%.Therefore, the simulation model is reasonable.And then the model and the material parameters were applied to calculate the structures of series composite charge explosives in different height ratios.From the calculation, the relation of structure size and energy output was studied and the exponential function between the size of the explosives and the velocity of the flyer was obtained.In conclusion, the first peak velocity of the flyer grows closer to the second as the high explosive composition increases.In contrast, the first peak velocity is less than the second as the insensitive explosive composition increases, and the velocity has a major zoom during the whole process.
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表 1 炸药的CJ爆轰参数
Table 1. CJ detonation parameters of explosive
Explosive ρ/(g/cm3) D/(km/s) uJ/(km/s) cJ/(km/s) JO-9159 1.863 8.87 2.22 6.65 JB-9014 1.900 7.71 1.93 5.78 
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表 2 炸药爆轰产物JWL状态方程参数
Table 2. JWL EOS parameters of detonation products
Explosive A/(GPa) B/(GPa) R1 R2 $\tilde{\omega}$ JO-9159 934.770 12.723 4.6 1.1 0.37 JB-9014 531.396 2.703 4.1 1.1 0.46
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表 3 模拟计算结果
Table 3. Simulated results
No. JO-9159
h1/(mm)JB-9014
h2/(mm)Flyer velocity
uf/(km/s)Specific kinetic energy
e/(kJ/g)1 0 80 3.625 6.570 2 30 50 3.975 7.900 3 40 40 4.156 8.636
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表 4 实验结果
Table 4. Experimental results
No. JO-9159
h1/(mm)JB-9014
h2/(mm)Flyer velocity
uf/(km/s)Specific kinetic energy
e/(kJ/g)1 0 80 3.691 6.812 2 30 50 3.854 7.427 3 40 40 4.164 8.669
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表 5 飞片试验模拟结果
Table 5. Simulated results of flyer experiment
No. JO-9159
h1/(mm)JB-9014
h2/(mm)Flyer velocity
uf/(km/s)Specific kinetic energy
e/(kJ/g)1 20 60 3.851 7.415 2 25 55 3.905 7.625 3 30 50 3.975 7.900 4 35 45 4.078 8.315 5 40 40 4.156 8.636 6 45 35 4.228 8.938 7 50 30 4.280 9.159 8 55 25 4.352 9.470 9 60 20 4.444 9.875
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