碰撞速度对活性弹丸作用多层靶影响研究

Study on Impact Speed of Active Projectile on Multilayer Target

针对活性弹丸更有效地应用于制式弹丸,提高动能弹丸的威力,利用非线性动力学数值模拟软件AUTODYN-3D对不同碰撞速度下活性弹丸侵彻多层靶进行了侵彻与爆炸联合毁伤效应研究。基于多组弹丸对20 mm RHA迎弹靶和后效铝靶数值模拟,揭示了碰撞速度对毁伤效应的影响机理。研究结果表明:活性弹丸激活率与碰撞速度具有一定匹配关系,可建立活性弹丸结构预测模型;随着碰撞速度的提高,活性材料在侵彻迎弹钢靶时激活率逐渐增大,1#后效铝靶受侵彻与爆炸联合毁伤面积一直增大;当速度超过1400 m/s时,进入2#后效铝靶靶前反应的活性材料减少,对其侵彻与爆炸联合毁伤能力表现先增大后减小的趋势。研究结果对于构建活性弹丸梯度引发形式,大幅提高活性弹丸战场毁伤能力具有重要意义。

In order to improve the power of kinetic projectile by more effective application of active projectile in standard projectile,the combined damage effect of invasion and explosion of active projectile penetration into multilayer target at different impact speed was studied by using nonlinear dynamic numerical simulation software AUTODYN-3D.Based on the numerical simulation of multiple groups of projectiles on 20 mm RHA target and after-effect aluminum target,the influence mechanism of impact speed on the damage effect was revealed.The results show that there is a matching relationship between the activation rate of the active projectile and the impact speed,and the prediction model of the active projectile structure can be established.With the increase of impact speed,the activation rate of the active material increases gradually when penetrating into the target,and the combined damage area of the 1#aluminum target increases continuously.For the 2#after-effect aluminum target,when the speed exceeds 1400 m/s,the reactive active material decreases before entering the 2#target,and the combined damage ability of its invasion and explosion increases first and then decreases.The results of this study are of great significance for constructing the active projectile gradient initiation form and greatly improving the battlefield damage ability of active projectile.