Experimental study on the lethality of blasting warhead with PEEK shell
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摘要: 为了验证聚醚醚酮（polyether ether ketone， PEEK）作为低附带毁伤战斗部壳体材料的可行性，设计了等厚度聚醚醚酮壳体和2A12铝制壳体作为爆破战斗部外壳。通过静爆威力对比试验，并结合峰值超压测试及高速摄影技术，对超压、比冲量及破片情况进行综合分析。试验结果表明，相同壳体厚度的聚醚醚酮壳体战斗部较2A12铝壳体战斗部质量减轻了一半以上，对人员超压毁伤半径几乎一致，聚醚醚酮壳体战斗部爆轰能量更多转化为冲击波能，且随着比例距离增加，比冲量高于2A12铝；聚醚醚酮壳体在爆炸载荷作用下破碎形成小破片，试验后仅回收到一枚边缘烧蚀的破片。可认为破片飞散时在爆轰产物高温高压作用下全部燃烧，聚醚醚酮壳体不产生杀伤破片，破片附带损伤小。战斗部壳体可采用聚醚醚酮材料，有效控制毁伤范围，满足城市作战中低附带毁伤效果需求。Abstract: In order to lower the collateral damage of warhead in urban warfare, the new material, polyether ether ketone (PEEK) was used as the warhead shell in this work, by which the fragments could be eliminated while the killing range of shock waves was maintained. The comparison between the warhead using PEEK shell and the one with 2A12 shell and identical shell thickness was conducted, in which the overpressure, specific impulse and fragment velocity were analyzed, the acceleration of fragment was recorded by high-speed camera and the fragments were recovered for further investigation. The results show that the warhead using PEEK shell possessed a 54% lower weight than the one using 2A12 shell and an identical overpressure damage radius. By using PEEK shell, the energy converted into shock wave is more than the case using 2A12 shell, thus the specific impulse is also higher as the proportional distance increasing. Few PEEK fragments were recovered since the tiny PEEK fragments formed under the blast loads were completely burned during the acceleration driven by high temperature detonation products. Therefore, the lethality of warhead using PEEK shell was limited to shock wave and was easily controlled to meet the requirement of low collateral damage in urban warfare.
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Key words:
- lethality of warhead /
- low collateral damage /
- shock overpressure /
- PEEK shell
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图 3 铝壳战斗部的冲击波超压随时间的变化曲线
Figure 3. Time dependent curves of shock wave overpressure in aluminum shell warheads
图 4 聚醚醚酮壳战斗部的冲击波超压随时间的变化曲线
Figure 4. Time dependent curves of shock wave overpressure in PEEK shell warheads
图 5 距爆心不同比例距离的超压峰值
Figure 5. Peak Overpressures at different scaled distances from the explosion center
图 6 距爆心不同比例距离处的比冲量
Figure 6. Specific impulse at different scaled distancesfrom the explosion center
表 1 被试品主要参数
Table 1. Main parameters of the tested product
壳体参数 材料 厚度/mm 质量/kg 聚醚醚酮 2.5 0.12 2A12铝 2.5 0.26 
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表 2 破片速度测试结果
Table 2. Fragment speed test results
壳体材料 测速靶与爆心的
距离/m破片到达
时间/ms破片速度/
(m·s−1)2A12铝 3 1.18 2542.4 4 3.09 1294.5 5 7.09 705.2 6 20.61 291.1 PEEK 3 2.13 1408.5 4 2.96 1351.4 5 — — 6 — —
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