Experimental study on shock wave from dynamic explosion of a warhead based on seismic wave triggering
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摘要: 提出了一种基于地震波触发的战斗部爆炸冲击波超压测试方法，该测试方法能可靠获取战斗部动爆冲击波超压峰值。采用提出的测试方法对着靶速度为0、535和980 m/s的战斗部空中爆炸冲击波分别进行了测试，并对战斗部动爆冲击波超压峰值测试结果和经验公式计算值进行了对比，定量分析了战斗部速度对冲击波压力场分布的影响。最后，在实测数据的基础上采用薄板样条插值方法重建了战斗部动爆冲击波超压三维可视化模型，为实战复杂环境下基于实测数据研究动爆冲击波特性提供了依据。Abstract: A method for measuring the shock wave overpressure of blasting warhead explosion based on seismic wave triggering was proposed. By the proposed method, the peak overpressure of the blast wave from dynamic explosion of a warhead can be obtained reliably. The air explosion shock waves of the blasting warhead with the target velocities of 0, 535 and 980 m/s were measured, respectively. And the measured results of the peak overpressure of the shock wave from dynamic explosion of the blasting warhead were compared with those by the empirical formula calculation. The influence of warhead velocity on the pressure field distribution of the shock wave was analyzed quantitatively. Finally, a three-dimensional visualization model for shock wave overpressure from dynamic explosion of the warhead was reconstructed by using the thin-plate-spline interpolation method. The reconstructed model can provide a basis for studying the characteristics of dynamic explosion shock wave based on the measured data in the complex environment of an actual combat.
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图 2 地震波触发冲击波超压测试原理
Figure 2. The principle for measuring shock wave overpressure triggered by seismic wave
图 3 冲击波超压峰值和传播时间差随距离的变化
Figure 3. Variation of shock wave overpressure peak and propagation time difference with distance
图 4 试验测试的加速度曲线和超压峰值曲线
Figure 4. Test curves of acceleration and shock wave overpressure peak
图 6 不同方向的冲击波超压时域曲线
Figure 6. Shock wave overpressure-time curves in different directions
图 7 不同速度战斗部的冲击波超压峰值曲线
Figure 7. Shock wave overpressure peak curves of the blasting warheads with different velocities
图 8 战斗部速度为0 m/s的冲击波超压峰值场分布
Figure 8. Shock wave overpressure field for the blasting warhead with the velocity of 0 m/s
图 9 战斗部速度为535 m/s的冲击波超压峰值场分布
Figure 9. Shock wave overpressure field for the blasting warhead with the velocity of 535 m/s
图 10 战斗部速度为980 m/s的冲击波超压峰值场分布
Figure 10. Shock wave overpressure field for the blasting warhead with the velocity of 980 m/s
表 1 试验结果与理论值对比
Table 1. Comparison between experimental and theoretical results
R/（m·kg−1/3） θ/（°） v0=0 m/s v0=535 m/s v0=980 m/s pp,e/kPa pp,d/kPa ε/% pp,e/kPa pp,d/kPa ε/% pp,e/kPa pp,d/kPa ε/% 4.71 0 321.39 317.35 1.26 434.86 355.57 18.23 483.16 389.02 19.48 45 343.49 317.35 7.61 384.34 344.15 10.46 392.65 367.28 6.46 90 342.92 317.35 7.45 285.10 317.35 −11.31 288.32 317.35 −10.07 135 335.52 317.35 5.41 270.90 291.64 −7.65 258.87 271.08 −4.72 180 320.94 317.35 1.12 228.45 281.30 −23.14 187.89 252.98 −34.64 225 294.20 317.35 −7.87 261.93 291.64 −11.34 215.23 271.08 −25.95 270 296.57 317.35 −7.01 285.98 317.35 −10.97 294.97 317.35 −7.59 315 319.73 317.35 0.74 368.50 344.15 6.61 402.27 367.28 8.70 9.41 0 112.04 104.86 6.41 127.36 111.70 12.30 149.08 117.54 21.15 45 110.61 104.86 5.19 110.62 109.67 0.86 118.86 113.76 4.30 90 100.10 104.86 −4.76 96.52 104.86 −8.65 96.21 104.86 −9.00 135 103.81 104.86 −1.02 88.96 100.16 −12.59 86.69 96.34 −11.13 180 106.88 104.86 1.89 90.35 98.25 −8.75 75.88 92.91 −22.44 225 102.12 104.86 −2.69 94.81 100.16 −5.64 88.06 96.34 −9.40 270 98.28 104.86 −6.70 99.25 104.86 −5.66 98.10 104.86 −6.90 315 111.00 104.86 5.53 118.45 109.67 7.41 123.47 113.76 7.86 14.12 0 63.87 63.04 1.31 74.87 65.85 12.05 78.23 68.24 12.77 45 63.23 63.04 0.30 66.35 65.02 2.01 69.56 66.69 4.12 90 57.72 63.04 −9.21 59.16 63.04 −6.55 59.03 63.04 −6.78 135 59.08 63.04 −6.70 57.75 61.08 −5.78 50.63 59.48 −17.48 180 60.51 63.04 −4.17 51.72 60.28 −16.56 45.73 58.04 −26.91 225 57.75 63.04 −9.16 53.69 61.08 −13.77 48.06 59.48 −23.77 270 57.78 63.04 −9.10 59.52 63.04 −5.92 57.52 63.04 −9.58 315 64.73 63.04 2.61 69.42 65.02 6.34 73.98 66.69 9.85 
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