Metals have a crystalline structure and the plastic flow in these materials occurred in the special crystalline planes and special crystalline directs that occurs in the planes. This mechanism is related to metals plastic deformation in the microscopic level. In this mechanism, non homogenous microstructure and the effect of crystalline direction play a major rule in the material behavior. Crystal plasticity constitutive equations are used for investigation of the crystalline direction effect and material texture. Voronoi method is used for simulating the non homogenous microstructure in plastic deformation. In this study, the elastic modulus parameters obtained by molecular dynamic simulations. Finally, the plastic deformation of Fe metal is simulated with finite element method that good agreement was observed with the experimental data.

Keywords: Crystal plasticity, Voronoi method, Molecular Dynamic, Finite element

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