药型罩与炸药间距对聚能装药能量输出的影响

为了满足反恐行动中破门破障类爆破器材威力可调节的要求,解决现有设计及方案无法根据目标快速调整的问题,提出通过调节药型罩与炸药间空气距离的方式对聚能装药威力进行快速调节的方案。利用数值仿真及理论验证的方法,对两种锥角结构且不同药、罩间距状态下的聚能装药能量输出进行了计算及理论分析。结果表明,随着聚能装药结构中药型罩与炸药间距的增加,射流的侵彻深度明显降低。当间距高度大于0.5D(D为装药直径)时,侵彻深度降低至原始侵彻深度的20%以下。该方案可以稳定地调节聚能装药的威力,为工程设计人员提供方案支持。

Influence of Distance between Liner and Explosive on Energy Output of Shaped Charge

In order to meet with the requirement of adjustable power of explosive materials for door or barrier breaking in anti-terrorism operations and to deal with the quick adjustment against the target which cannot be realized by current available design and method, a new scheme of fast power adjusting of shaped charge was proposed by alternating the air height between liner and explosive. By numerical simulation and theoretical verification, energy output of two conical angle structures with different spacing between charge and liner were analyzed, calculated and theoretically decomposed. The results show that penetration depth of the jet decreases with the increase of the distance between liner and explosive. When space height is more than 0.5D, penetration depth would reduce to lower than 20% of the original value. The scheme can stably adjust the power of shaped charge and provide scheme support for engineers.