The deformation process in Cu and Al single crystals under shock loading was investigated using a multiscale model of plasticity that couples discrete dislocation dynamics and finite element analyses. Computer simulations were carried out to mimic loading condition of high strain rates ranging from 105 to 107/s, and short pulse durations of few ns involved in recent laser based experiments. The effects of strain rate, shock pulse duration and the non-linear elastic properties were investigated. Relaxed configurations using dislocation dynamics show formation of dislocation micro bands and weak dislocation cells. Statistical analyses of the dislocation microstructures were

preformed to study the characteristics of the local dislocation densities and the distribution of the instantaneous dislocations velocities.

Modelling the Dynamic Deformation and Patterning in FCC Single Crystals at High Strain Rates - Dislocation Dynamics Plasticity Analysis. M.A.Shehadeh, H.M.Zbib, T.Diaz de la Rubia: Philosophical Magazine, 2005, 85[15], 1667-85