MOLECULAR DYNAMICS SIMULATION OF VISCOELASTIC PROPERTIES AND SLIP BEHAVIOR OF THIN FILMS OF N-HEXADECANE IN THE SHEAR FLOW

摘要

We investigate the viscoelastic properties of chain molecules (n-hexadecane) under steady state and oscillatory shear flow of ultra thin films by molecular dynamics simulation. The stress vs. strain rate diagram of the oscillatory shear flow system is used to determine the range of linear viscoelasticity. In addition, interfacial slip is observed and discussed in both cases. The critical shear stress at which slip occurs is also found in our simulation.