| Abstract: | A new computer simulation method employed in discrete dislocation dynamics is presented. The article summarizes results of
an application of the method to elementary interactions among glide dislocations and dipolar dislocation loops. The glide
dislocations are represented by parametrically described curves moving in glide planes whereas the dipolar loops are treated
as rigid objects. All mutual force interactions are considered in the models. As a consequence, the computational complexity
rapidly increases with the number of objects considered. This difficulty is treated by advanced computational techniques such
as suitable accurate numerical methods and parallel implementation of the algorithms. Therefore the method is able to simulate
particular phenomena of dislocation dynamics which occur in crystalline solids deformed by single slip: generation of glide
dislocations from the Frank-Read source, interaction of glide dislocations with obstacles, their encounters in channels of
the bands, sweeping of dipolar loops by glide dislocations and a loop clustering. |
