Abstract
A self-consistent distribution of the excess dislocation density for a finite domain in the disclination field has been studied by numerical methods. The effective Airy stress function, the stress tensor, and the elastic energy of a screened disclination are calculated and analyzed as a function of the mutual arrangements of the disclination and the plastically deformed zone, the size and geometry of this zone, and the boundary conditions. It is shown that the elastic energy of the system in all cases decreases significantly if the disclination occurs in a plastically deformed region of the crystal.
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