弹靶参数对含能破片冲击起爆屏蔽装药的影响

The Influence of Projectile and Target Parameters on Reactive Fragment Impact Initiating Covered Explosive

为了研究弹靶参数对含能破片冲击起爆屏蔽装药的影响,以Al/PTFE(26.5/73.5)活性反应材料制成的含能破片为研究对象,运用SPH算法分析了破片质量、几何形状,以及盖板厚度和材料因素对屏蔽装药冲击起爆的影响。结果表明:质量大的破片冲击起爆屏蔽装药的能力优于质量小的破片;圆柱体破片冲击起爆屏蔽装药的能力优于球形破片;较厚的盖板抗冲击起爆能力优于较薄的盖板;密度大或韧性大的盖板材料抗冲击起爆能力较佳。

In order to study the influencing factors of shielded charge initiated by energetic fragment impaction,the reactive fragments made from the classical formula of Al/PTFE reactive material(26.5/73.5)were studied.The SPH algorithm was used to analyze the effects of fragment mass and geometry,cover thickness and material on the impact initiation of shielded charge.The results show that the impact initiation shielding charge of fragments with large mass is better than that of fragments with small mass;the impact initiation shielding charge of cylindrical fragments is better than that of spherical fragments.The initiation ability of thick cover with high density or toughness materials is better than that of thin cover plate.