Ignition Characteristics of Fragile TungstenAlloy Penetrator Acting on Diesel Fuel
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摘要: 为研究着靶速度、着靶角度、靶板厚度和弹体截面形状对易碎穿甲弹引燃特性的影响, 在对易碎穿甲弹引燃特性分析的基础上, 开展了不同条件下钨合金易碎穿甲弹对0号柴油的穿甲引燃实验。结果表明:弹体的引燃特性随着着靶速度的增加而提高; 在一定范围内, 靶板厚度的增大有利于提高弹体的引燃特性, 但是随着靶板厚度的进一步增大, 弹体的引燃特性减弱; 在不同着靶速度和着靶角度下, 三角形截面易碎穿甲弹较等截面面积和弹长的圆形截面易碎穿甲弹有更好的引燃特性。Abstract: Based on the analysis of the ignition characteristics of the fragile penetrator, the ignition experiments for No.0 diesel fuel were carried out to investigate the influence of the incident velocity, the incident angle, and the cross-section shape of the projectile and the thickness of the target on the ignition characteristics of the fragile tungsten alloy projectile.The results show that the ignition characteristic is improved with the increase of the incident velocity; to a certain degree, the ignition characteristic is improved with the increase of the target thickness, and then weakened with the further increase of the target thickness; the fragile projectile with a triangular cross-section has a better ignition characteristic than that with a circular cross-section at different incident velocities and incident angles.
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Key words:
- fragile projectile /
- ignition characteristics /
- diesel fuel /
- incident velocity
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图 2 易碎弹引燃柴油情况(d=10 mm)
Figure 2. Ignition of diesel fuel by fragile projectile (d=10 mm)
图 4 易碎弹引燃柴油情况(v≈1 200 m/s)
Figure 4. Ignition of diesel fuel by fragile projectile (v≈1 200 m/s)
图 5 两种易碎弹引燃柴油情况(v≈800 m/s)
Figure 5. Ignition of diesel fuel by two different fragile projectiles (v≈800 m/s)
图 6 两种易碎弹引燃柴油情况(α=15°)
Figure 6. Ignition of diesel fuel by two different fragile projectiles (α=15°)
表 1 弹体材料参数
Table 1. Material parameters of projectile
ρ/(g/cm3) G/(GPa) Y/(GPa) σb/(GPa) σbc/(GPa) 18.3 160 1 700 0.3 2.1 
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表 2 装甲钢材料参数
Table 2. Material parameters of armor steel
ρ/(g/cm3) G/(MPa) Y/(MPa) Tmelt/(K) Troom/(K) μ 7.85 77 792 1 520 294 0.22 A/(MPa) B/(MPa) n C m γ0 1 180 180 0.14 0.012 1.05 1.67
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表 3 油箱材料参数
Table 3. Material parameters of fuel tank
ρ/(g/cm3) E/(GPa) Y/(MPa) σb/(MPa) σ0.5/(%) μ 7.83 205 235 438 ≥26 0.3
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表 4 不同着靶速度下的实验结果
Table 4. Experimental results at different incident velocities
Cross-section shape v/(m/s) d/(mm) tb/(s) Circular 807 10 ＜2 Circular 1 006 10 ＞2 Circular 1 204 10 ＞2
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表 5 不同靶板厚度下的实验结果
Table 5. Experimental results at different target thicknesses
Cross-section shape v/(m/s) d/(mm) tb/(s) Circular 1 198 5 ＜2 Circular 1 204 10 ＞2 Circular 1 201 15 ＜2
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表 6 不同着靶速度下两种弹体的实验结果
Table 6. Experimental results of two projectiles at different incident velocities
Cross-section shape v/(m/s) d/(mm) tb/(s) 807 10 ＜2 Circular 1 006 10 ＞2 1 204 10 ＞2 801 10 ＞2 Triangular 1 008 10 ＞2 1 196 10 ＞2
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表 7 不同着靶角度下两种弹体的实验结果
Table 7. Experimental results of two projectiles at different incident angles
Cross-section shape α/(°) v/(m/s) d/(mm) tb/(s) 0 807 10 ＜2 Circular 15 803 10 ＞2 45 799 10 ＜2 0 801 10 ＞2 Triangular 15 798 10 ＞2 45 802 10 ＞2
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