贫铀合金材料自锻弹丸的数值模拟  

Numerical Simulation for Formed Projectile of Depleted Uranium Alloy

作　　者：宋顺成[1] 高平 才鸿年 

机构地区：[1]西南交通大学应用力学与工程系,成都610031 [2]内蒙古金属材料研究所,包头014034 [3]中国南方工业集团公司,北京100081

出　　处：《应用数学和力学》2003年第9期951-955,共5页Applied Mathematics and Mechanics

摘　　要：　利用SPH(SmoothParticleHydrodynamic)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。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. 

关 键 词：自锻弹丸 爆轰 SPH算法 人造压力 

分 类 号：O389[理学—流体力学] O383[理学—力学]