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Effect of the diamond nanoparticle on the friction property of the sliding friction pair is investigated using the molecular dynamics simulation. A molecular dynamics simulation model without the diamond nanoparticle is also set up. The simulation is conducted at an external load of 60 nN. The results confirm that adding diamond nanoparticle can improve the friction property. With increasing the diameter, the angular velocity, and the indentation depth decrease inversely. Also, when the diameter varies from 32.13 A to 49.98 A, the friction force, and the contact area are both inversely proportional to 3.6 power of the diameter. The relationship between friction force and contact area shows a linear increase law, which indicates that friction force is affected by the contact area.

Effect of Diamond Nanoparticle on the Friction Property of Sliding Friction Pair With Molecular Dynamics Simulation