采用AUTODYN-2D无网格SPH数值技术,对碰撞速度10km/s下的球形及柱状空间碎片在轨碰撞超高速作用行为进行数值模拟,给出了不同节点处的速度变化规律.数值模拟结果表明,空间两物体碰撞后所形成碎片云主要分布在原碰撞物体运行轨道周围,运动方向与原来碰撞物体的速度方向相同;发生碰撞的空间物体形状强烈影响碰撞后碎片云的分布及速度;球形碎片碰撞柱状碎片形成的碎片云速度最大;柱状碎片相撞后碎片云呈椭球形分布. The numerical simulation of super-high-speed interaction between spherical and columnar space debris in orbit at a collision speed of 10km / s is carried out using the AUTODYN-2D meshless SPH numerical technique, and the velocity variation at different nodes is given. Numerical results show that , The debris cloud formed by the collision of two objects in space mainly distributes around the orbit of the original collision object and the movement direction is the same as that of the original collision object. The shape of the space object that collides strongly influences the distribution and velocity of the debris cloud after the collision. Debris formed by columnar debris had the highest cloud velocity; the fragment cloud was ellipsoid after collision of columnar fragments.