Scratch simulation at 10m/s and 100m/s shows that the bump ymof of scratches is closer, with no big difference. At the same time, the width of the scratch is not affected by the scratch speed. The average coefficient of friction is 0.290 when the speed is 10m/s, and at 100m/s, the average coefficient of friction is 0.287. Therefore, it is believed that in the process of molecular dynamics simulation, the grinding particle scratch speed has less effect on the formation of scratches.
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