A novel, nonlocal version of continuum crystal plasticity theory is proposed, which is based on a statistical description of dislocations. It involves a set of evolution equations for the dislocation density and for the sign-dislocation density, which are coupled to the continuum slip description. The theory is applied to the problem of shearing of a two-dimensional composite material. The results are compared, in qualitative manner, to the results of recent discrete dislocation predictions of the same problem. The new theory is shown to be able to pick up the distinct dependence on particle morphology and the associated size dependence.
|Journal||Journal De Physique. IV : JP|
|Publication status||Published - Sep 1 2001|
|Event||5th European Mechanics of Materials Conference on Scale Transitions from Atomistics to Continuum Plasticity EUROMECH-MECAMAT'2001 - Delft, Netherlands|
Duration: Mar 5 2001 → Mar 8 2001
ASJC Scopus subject areas
- Physics and Astronomy(all)