The main objective of this paper is the discus- sion of two different strategies of simulating the consti- tutive behavior of granular assemblies. For this, we wil focus on discrete particle method which are widely used in physical science and on continuum-based microplane models which are applied by the engineering community. After deriving the overall constitutive equations based on Voigt's hypothesis, special focus will be dedicated to the Comparison of the relations between the microscopic and macroscopic quantities of each model. It will be demon- Strated, that the two basically different modelling tech- Niques lead to remarkably similar results for elastic as well As elasto-plastic material beahvior.
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