Discrete dislocation plasticity approach to fast moving dislocations
| Autor: | Roos, A, Metselaar, E, De Hosson, JTM, van der Giessen, E, Robertson, IM, Lassila, DH, Devincre, B, Phillips, R |
|---|---|
| Přispěvatelé: | Applied Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2000 |
| Zdroj: | MULTISCALE PHENOMENA IN MATERIALS-EXPERIMENTS AND MODELING, 137-142 STARTPAGE=137;ENDPAGE=142;TITLE=MULTISCALE PHENOMENA IN MATERIALS-EXPERIMENTS AND MODELING |
| Popis: | This paper concentrates on application of the so-called Discrete Dislocation Plasticity to high strain rate deformations. In particular the question is addressed if the DDP approach may capture the specific processes taking place at high strain rates. In particular the paper reports on tests of the validity of some approximations and provides some sample runs to show the applicability of the method. In assessing the results, one has to keep in mind two underpinning aspects: (1) the model is two-dimensional and (2) the results hold only in the regime where linear isotropic elasticity is valid. It was concluded that accelerations can not be neglected at very high strain rate deformations, both for the conventional and the relativistic case. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|