碎片云问题的三维欧拉数值模拟

3D Eulerian Numerical Method for Debris Clouds

针对材料超高速碰撞产生碎片云问题进行了多介质弹塑性流体力学欧拉方法数值模拟,介绍了所采用的数学模型、材料模型及相应的计算方法,模拟了铝球超高速碰撞铝板和斜铜柱高速撞击铝板形成碎片云的实验现象。进行了不同碰撞速度下模拟的碎片云形状和实验结果比较,利用经验公式对数值模拟的板靶开孔尺寸进行了分析。数值结果与实验结果、经验公式结果比较,说明多介质弹塑性流体力学欧拉方法能够较好地模拟超高速碰撞产生的碎片云问题,验证了数值方法的有效性。

This paper studied elastic-plastic constructive mo simulated that sphere and o the del 3D Euler method of elastic-plastic hydrodynamics with the ideal for debris clouds produced by hypervelocity impacts. Two cases were ue cylinder impacting single plates. The simulation results were compared with experimental results. The experimental results. The hole diameter of that the Eulerian numerical method is vali numerical simulating cloud sh hypervelocity impact of pr date for simulating debris eetl oud apes agreed very well with le was also studied. It shows s produced by hypervelocity impacts.