贫铀合金材料自锻弹丸的数值模拟

Numerical Simulation for Formed Projectile of Depleted Uranium Alloy

1.
Department of Applied Mechanics and Engineering, Southwest Jiaotong University, Chongdu 610031, P.R.China;
2.
Metals Institute of Neimenggu, Baotou 014034, P.R.China;
3.
China South Industries Group Corporation, Beijing 100081, P.R.China

摘要: 利用SPH(Smooth Particle Hydrodynamic)算法对贫铀合金材料自锻弹丸过程进行了数值模拟。其中使用了人造爆轰压力,即给定了爆轰压力的时间分布与空间分布。为了描述材料在高压作用下的变形性能,材料模型采用了Johnson-Cook关系。通过数值计算,给出了自锻弹丸的飞行速度、弹丸几何尺寸及炸高等参数。
- 自锻弹丸 /
- 爆轰 /
- SPH算法 /
- 人造压力
Abstract: The numerical simulation for forming projectile of depleted uranium alloy with the SPH (Smooth Particle Hydrodynamic) algorithm was presented. In the computations the artificial pressures of detonation were used, i. e. the spatial distribution and time distribution were given artificially. To describe the deformed behaviors of the depleted uranium alloy under high pressure and high strain rate, the Johnson-Cook model of materials was introduced. From the numerical simulation the formed projectile velocity, projectile geometry and the minimum of the height of detonation are obtained.
- formed projectile /
- detonation /
- SPH algorithm /
- artificial pressure

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