粉末高速压制成形二维流动的元胞自动机模拟

CA Numerical Simulation for Two-dimensional flow of HVC

根据粉末高速压制成形和元胞自动机在时间与空间上均离散的特点,分析能量分布与粉末颗粒的水平迁移与垂直迁移规律,建立粉末高速压制成形过程的元胞自动机模型。将高速压制粉末颗粒的迁移规则用矩阵表示,给出基于元胞自动机的高速压制成形粉末迁移过程模拟的算法。利用Matlab软件实现对高速压制成形粉末流动过程的模拟,得到高速压制粉末致密化过程的演化图和密度分布的变化过程。数值模拟的最终密度分布与实验研究的结果较吻合。

Cellular automata model of high velocity compaction process was established based on the characteristics of discrete in time and space of the cellular automata and high velocity compaction. Energy distribution and powder＇s vertical and horizontal migration rules were given as well. Powder migration rules of high velocity compaction were expressed by matrix and arithmetic of simulation of powder＇s migration process was given. Densification processes of the evolution figure and density variation in high velocity compaction process were obtained in Matlab platform. The final density of numerical simulation is approximately in line with the experimental results.