Molecular Dynamics Simulation on the Interaction of Two Edge Dislocation in fcc Metal

Abstract

The behavior of dislocations in fcc crystal is simulated using the molecular dynamics approach. At first, single edge dislocation is modeled, and the relaxation is conducted. The result shows that a single dislocation is decomposed of two half dislocations. It is considered to be reasonable because the decomposition into two half dislocations results stable state from the energetic viewpoint. For the interaction problem between two edge dislocation, three models are made analyzed. The results are compared with those of dislocation theory and discussed.