Molecular Dynamics Simulation on Collision Frictional Properties of a Molybdenum Disulfide (MoS2) Film in Microgravity Environment

In this paper, a collision friction model for double-layer MoS2 film is proposed considering the microgravity induced in space environment. A modified REBO (Reactive Empirical Bond Order) potential used to describe interactions among atoms film. The process of simulated by vibrations y and z directions, dependence average force analyzed. influence single vibration direction on forces can be ignored, while shows great influence. effects frequency amplitude frictional behaviors are investigated. during correlate with direction, relationship four stages. As increases, show low values first stage, they increased as second stage. third decreased, come stable level fourth Increasing at different frequencies leads an increase force, due that results high indentation depth. puckering phenomenon occurs specific frequency, which reason process.