聚能弹在空气和水中的形成。

IF 3.2
Zhifan Zhang, Hailong Li, Longkan Wang, Guiyong Zhang, Zhi Zong
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引用次数: 1

摘要

随着军舰抗爆性能的提高,聚能战斗部成为水下武器设计的重点和广泛应用领域。为了对军舰进行有效的毁伤,研究聚能弹在空气和水中的形成具有重要意义。本文利用欧拉控制方程建立了空气和水下爆炸作用下聚能药的数值模型。讨论了空气爆炸和水下有空腔和无空腔爆炸三种情况下爆炸成形弹丸在不同介质中的形成和运动。首先,讨论了地层过程中EFPs的速度分布。然后,通过模拟不同类型炸药的聚能装药空气爆炸,得到了EFPs在空气中最大头速的经验系数。计算结果与实际解吻合较好,验证了数值模型的正确性。进一步推导了该经验系数在水中的分布。然后,进一步比较分析上述三种情况下EFPs在不同介质中的头部速度演变。得到了在不同介质中形成和运动的EFPs速度衰减的拟合公式。所得结果可为水下武器的设计提供理论依据和数值支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Formation of Shaped Charge Projectile in Air and Water.

Formation of Shaped Charge Projectile in Air and Water.

Formation of Shaped Charge Projectile in Air and Water.

Formation of Shaped Charge Projectile in Air and Water.

With the improvement of the antiknock performance of warships, shaped charge warheads have been focused on and widely used to design underwater weapons. In order to cause efficient damage to warships, it is of great significance to study the formation of shaped charge projectiles in air and water. This paper uses Euler governing equations to establish numerical models of shaped charges subjected to air and underwater explosions. The formation and the movement of Explosively Formed Projectiles (EFPs) in different media for three cases: air explosion and underwater explosions with and without air cavities are discussed. First, the velocity distributions of EFPs in the formation process are discussed. Then, the empirical coefficient of the maximum head velocity of EFPs in air is obtained by simulations of air explosions of shaped charges with different types of explosives. The obtained results agree well with the practical solution, which validates the numerical model. Further, this empirical coefficient in water is deduced. After that, the evolutions of the head velocity of EFPs in different media for the above three cases are further compared and analyzed. The fitting formulas of velocity attenuation of EFPs, which form and move in different media, are gained. The obtained results can provide a theoretical basis and numerical support for the design of underwater weapons.

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