Abstract
In the present study, we simulated the dynamic behavior of granular media excavated by a cutting blade using Cellular Automata (CA). The space is divided into triangular grids, where particles are distributed two dimensionally on cellular space. The local interaction rules are defined based on two assumptions that are related to the determination of moving vector of particle cells due to the force action of blade, and also the free drop motion of particles. The present CA model provides basic idea for understanding dynamic behavior of granular media, and also the model can easily be extended to more practical scenario.