3D investigations of indent induced plasticity by discrete dislocation dynamics
Résumé
Twenty years after the first publication on 3D simulations of nanoindentation using Discrete Dislocation Dynamics, this paper details the ingredients required to perform such simulations with the modern codes. After briefly recalling the principle of nanoindentation experiments, a set of open questions are enumerated. Then, the numerical procedures needed to set-up a simulation of nanoindentation using Dislocation Dynamics are explained and a typical algorithm is proposed based on a two-way full coupling between the DD code and an elastic Finite Element solver. Finally, simulation results are presented for several orientations of the indented surface of a Cu single crystal. Comparisons with experiments are provided in term of pop-in mechanism, surface profiles and local rotations. The aim of the article being to provide guidelines to the reader, the paper is concluded on artifacts that could be observed when simulations are not performed in ideal conditions.