2-D granular model of composite elasticity using molecular dynamics simulation

Abstract

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 k1/k2 used in simulation has influenced average value of the mentioned parameter monotonically. It means that increase of the ratio will also increase the parameter.