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工程力学  2015 

高能炸药驱动下弹体膨胀破碎过程试验研究

DOI: 10.6052/j.issn.1000-4750.2014.03.0197, PP. 203-208

Keywords: 弹药工程,壳体膨胀,弹体材料,破片速度,超高速摄影技术,测速技术

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Abstract:

为了获得高能炸药驱动下战斗部壳体破碎机理,选取新型弹体材料30CrMnSiNi2A钢、40CrMnSiB钢以及典型弹体材料50SiMnVB钢,采用超高速摄影技术拍摄壳体静爆,获得了不同弹体材料壳体膨胀破碎过程,引入弹体径向膨胀系数,建立了考虑弹体材料性能影响的壳体径向膨胀距离随时间变化的函数关系式,并试验测定了三种材料弹体形成破片的最大初速。分析试验结果发现,新型弹体材料壳体膨胀速度和破片初速更大,相比50SiMnVB钢壳体,30CrMnSiNi2A钢和40CrMnSiB钢壳体形成破片的最大初速分别提高了19.0%和31.9%。不同合金钢材料壳体形成破片初速沿壳体轴向分布规律相同,最大初速出现在距起爆点约70%圆筒长度处。该研究结果将为杀爆战斗部壳体材料选取及设计提供参考依据。

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