中文摘要：

为了研究原子尺度下摩擦力波动现象产生的本质，利用分子动力学模拟的方法从摩擦力波动周期的角度对其进行探讨．模拟过程中分别讨论了固液作用强度、速度以及壁面晶格长度对其波动周期的影响．结果发现其波动周期仅与速度和壁面晶格长度有关，并成特定的函数关系，这与理论模型的预测结果具有很好的吻合．

英文摘要：

In order to investigate the origin of the oscillation of friction force on the atomic scale, Molecular dynamics simulation is employed to research it from the period of the oscillation. In the process of simulation, various factors such as the wall-fluid interaction strength, velocity and the lattice constants of the walls are discussed to investigates their effects on the oscillation periods. The periods of the oscillation of friction force only depend on the wall lattice constants. A function between the period and the lattice constant is set up, which agreed well with theoretical predictions.