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Investigation of size effects in miniaturized components with free edges using an FFT-based solver for non-local crystal plasticity
1 : NANTES UNIVERSITÉ - École Centrale de Nantes
(Nantes Univ - ECN)
-
Site web
Nantes Université
1 rue de la Noë - BP 92101 - 44321 Nantes cedex 3 -
France
2 : Institut de Recherche en Génie Civil et Mécanique (GeM), UMR CNRS 6183
(GeM)
Ecole Centrale de Nantes, Université de Nantes, CNRS : UMR6183
1 rue de la Noë, 44321 Nantes -
France
3 : GeM - Institut de Recherche en Génie Civil et Mécanique - UMR 6183
(GeM)
-
Site web
* : Auteur correspondant
Ecole Polytechnique de l'Université de Nantes
GeM - Institut de Recherche en Génie Civil et Mécanique - UMR 6183 - CNRS - Ecole Centrale de Nantes - Université de Nantes -
France
This work presents a numerical investigation of size effects in miniaturized
components using a Gurtin-type non-local crystal plasticity model.
Simulations are performed using an efficient FFT-based implementation,
with an adaptive Barzilai-Borwein non-linear gradient descent solver.
Size effects are systematically investigated using pseudo two-dimensional
RVEs with free edge boundary conditions. The non-local model successfully
captures intrinsic size effects, with enhanced flow stress as the
average crystal size decreases, which is attributed to the non-local
energetic backstress.
