Monte-Carlo simulation of dislocation networks using the message passing interface

The dynamic behaviour of one-dimensional lattice defects in metallic materials is responsible for most of the metals' mechanical properties. This behaviour is determined by all the interaction mechanisms of dislocations with other lattice defects such as further dislocations, precipitations and grain boundaries. A two-dimensional simulation model implementing these mechanisms based on a Monte-Carlo method for an N-body dislocation system is presented. The influences of temperature and external stress can also be taken into account. In this model, the different defects will be reduced to a polymorphic structure according to the object-oriented paradigm. To improve computing performance, the model was parallelized for multiprocessor machines in collaboration with the Edinburgh Parallel Computing Centre (EPCC) under the European Union TRACS programme (Training and Research on Advanced Computing Systems). Results are discussed under consideration of different parameters.