超高速弹丸碰撞薄板产生碎片云的运动模型分析

Dynamic Model for Debris Clouds Produced from Impacts of Hypervelocity Projectiles with Thin Sheets

为了准确地描述超高速碰撞薄板形成碎片云的运动特征,通过数值模拟结果与Swift,Piekutowski和Bless这3种碎片云模型结果进行比较,并对Swift模型进行了修正.结果表明:Piekutowski和Bless模型能较好地描述圆片弹丸所形成碎片云的运动;修正后的Swift模型能较好地描述球形弹丸所形成的碎片云的运动.

To obtain an approach to describe the characteristics of debris clouds produced by hypervelocity impacts with thin sheets,results from the Swift model,the Piekutowski model and the Bless model were analyzed by comparing them with simulation results.The Swift model was modified.The results showed that the Piekutowski model and the Bless model were fit for the debris clouds produced by hypervelocity impacts of discs with thin sheets,and the modified Swift model was fit for the cases with spherical projectiles.