Molecular Dynamics Simulation of Water-Based Nano-Lubrication

Abstract:

Molecular dynamics simulations of water-based nanolubrication in Couette flow are carried out. The water molecules are simulated by the TIP3P model. Three different shear rates are 20 m/s and 40 m/s and 60 m/s, and the vertical pressure acted on the metal wall are 10GPa, 20 GPa, 30 GPa and 40 GPa respectively. The simulated results show that the greater pressure, the smaller the stable value of friction spacing, while the reduction rate of the stable value becomes small. Meanwhile, as pressure increases, the stabilization time is longer. However, under the same pressure, shear rate of influence on the friction spacing is not obvious. The friction spacing increases with the number of particles, showing that the presence of nanoparticles can enhance the bearing capacity.

• Periodical: Advanced Materials Research (Volume 773)
• Pages: 585-588
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.773.585
• Online since: September 2013
• Authors: Su Mei Zhang, Pei Hong Guo, Jia Nan Zhu, Xiao Ping Wen
• Keywords: Lubrication, Molecular Dynamics (MD) Simulation, Nanoparticle, Water-Based Liquid

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