TY - JOUR T1 - Simulation the mechanical behavior of polycrystalline Fe by using crystal plasticity and Molecular dynamic methods TT - شبیه سازی رفتار مکانیکی پلی کریستال آهن به کمک روش کریستال پلاستیسیته و دینامیک مولکولی JF - mdrsjrns JO - mdrsjrns VL - 13 IS - 9 UR - http://mme.modares.ac.ir/article-15-5612-en.html Y1 - 2013 SP - 138 EP - 148 KW - Crystal plasticity KW - Voronoi method KW - Molecular Dynamic KW - Finite element N2 - 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. M3 ER -