13 , the graphs of all particles were similar to sine waves, and at the same time, the velocities in the three figures showed a trend of decreasing from the center to the edge, which indicated that the particles inside the sample could obtain higher impact velocities, and particle velocities at the edge of the sample would decrease due to the friction force of the die wall.
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Research on the high velocity compaction process of iron-based powder based on the DEM.
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