纳米润滑油添加剂抗磨减摩分子动力学模拟研究  

Molecular Dynamics Simulating Study on Tribological Characteristics of Nano-material Additives in Lubricating Oil

作　　者：刘芳[1] 熊锐[1] 唐智[1] 

机构地区：[1]广东工业大学机电工程学院汽车工程系,广东广州510006

出　　处：《润滑与密封》2010年第4期94-96,61,共4页Lubrication Engineering

摘　　要：研究分子动力学模拟的基本原理,建立摩擦副的分子动力学模型。通过计算对磨材料原子与被磨面材料原子之间作用力,建立运动方程,通过数值方法求解运动方程,模拟出不同时刻原子运动轨迹,根据运动轨迹和原子间作用力分析摩擦磨损过程。对Fe/Fe和Fe/Cu 2种摩擦副的抗磨减摩性能进行模拟计算,分析磨损量与模拟时间和载荷曲线的变化趋势。结果表明有中间纳米Cu润滑层的Fe/Cu摩擦副具有良好的摩擦性能。The principle of molecular dynamics simulation was studied, molecular dynamics model of friction surfaces was established. The force between two friction surfaces was calculated, movement equation was established and solved by numerical value methods, and the atom movement track of different time was simulated. According to the atom movement track and force between atoms, the process of friction and wear was analyzed. The tribological characteristics of the Fe/Fe and Fe/Cu friction surfaces were simulated. The results of molecular dynamic simulation show that the tribological characteristics of Fe/Cu friction surface are better than those of Fe/Fe friction surface.

关 键 词：纳米粒子 润滑油 分子动力学模拟 摩擦磨损 

分 类 号：TH117[机械工程—机械设计及理论]