Application of molecular dynamics to macroscopic particles

Molecular dynamics research is reviewed with emphasis on current nonequilibrium calculational techniques used to calculate transport coefficients in systems of polyatomic molecules. Many of the numerical methods and numerical experiment evaluation techniques of that field could be adapted to macroscopic granular material studies. Macroscopic particles interact with nonconservative interaction forces. Macroscopically available energy is lost from the system during most dynamic interactions - through plastic deformation, friction and breakage. Two-dimensional models are used in a study of nonequilibrium shearin flow of granular materials. Several verification calculations and tests confirm the ability of these computer models to predict the dynamic interactions of macroscopic particles. Preliminary results from shearing flow calculations and corresponding laboratory tests are also in qualitative agreement.