Rheology of Earth Materials :
Closing the gap between timescales in the laboratory and in the mantle

9 May 2024 - New publication in International Journal of Plasticity

Atomistic to continuum mechanics description of crystal defects with dislocation density fields: Application to dislocations and grain boundaries

In the first paper of his PhD project, Houssam Kharouji (LEM3, Université de Lorraine), proposes an atomistic to continuum mechanics crossover method that represents the atomic structure of dislocations cores by an appropriate Nye dislocation density tensor field and captures quantitatively the short and long range mechanical fields of defects. The model's capabilities are demonstrated through the analysis of the interaction between edge dislocations and a low angle grain boundary in copper.

 

To learn more:

H. Kharouji, L. Dezerald, P. Hirel, P. Carrez, P. Cordier, V. Taupin, J. Guénolé (2024) Atomistic to continuum mechanics description of crystal defects with dislocation density fields: Application to dislocations and grain boundaries. International Journal of Plasticity, 177, 103990, https://doi.org/10.1016/j.ijplas.2024.103990