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Derivation of the 1-D Groma–Balogh equations from the Peierls–Nabarro model.
- Source :
-
Calculus of Variations & Partial Differential Equations . Dec2023, Vol. 62 Issue 9, p1-55. 55p. - Publication Year :
- 2023
-
Abstract
- We consider a semi-linear integro-differential equation in dimension one associated to the half Laplacian whose solution represents the atom dislocation in a crystal. The equation comprises the evolutive version of the classical Peierls–Nabarro model. We show that for a large number of dislocations, the solution, properly rescaled, converges to the solution of a fully nonlinear integro-differential equation which is a model for the macroscopic crystal plasticity with density of dislocations. This leads to the formal derivation of the 1-D Groma–Balogh equations (Groma–Balogh in Acta Mater 47(13):3647–3654, 1999), a popular model describing the evolution of the density of positive and negative oriented parallel straight dislocation lines. This paper completes the work of Patrizi and Sangsawang (Nonlinear Anal 202:112096, 2021). The main novelty here is that we allow dislocations to have different orientation and so we have to deal with collisions of them. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09442669
- Volume :
- 62
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Calculus of Variations & Partial Differential Equations
- Publication Type :
- Academic Journal
- Accession number :
- 173558894
- Full Text :
- https://doi.org/10.1007/s00526-023-02575-7