2-D Granular Model of Composite Elasticity using Molecular Dynamics Simulation

摘要

Composite of two kinds of grains is modeled in two-dimension and the elasticity is calculated using molecular dynamics method implementing Gear predictor-corrector of fifth order. It has been observed that same composite concentration can be represented by several configurations of the two kinds of grains. Simulation results show a peak or maximum value of a parameter proportional to Young's modulus, which quantitatively agrees with reported experiment results. Ratio of k_1/k_2 used in simulation has influenced average value of the mentioned parameter monotonically. It means that increase of the ratio will also increase the parameter.