A full-field crystal-plasticity analysis of bimodal polycrystals - Archive ouverte HAL Access content directly
Journal Articles International Journal of Solids and Structures Year : 2020

A full-field crystal-plasticity analysis of bimodal polycrystals

(1) , (1) , (2) , (1)
1
2
B. Flipon
Clément Keller
R. Quey
Fabrice Barbe

Abstract

A full field crystal plasticity modelling of bimodal polycrystals is presented. Bimodal polycrystals are generated using a controlled Laguerre–Voronoi algorithm, and a modified phenomenological law is used to take into account the grain size effect through a Hall–Petch term. A focus is particularly made on the effects of grain size and of grain size ratio between ultrafine grains and coarse grains populations on local and global mechanical responses. The effect of the spatial distribution of the coarse grains (clustered or isolated) is also analysed in terms of strain localisation and stress concentration at the local scale.
Fichier principal
Vignette du fichier
revised-manuscript-SAS_IJSS-D-18-01146.pdf (22.74 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02184404 , version 1 (22-10-2019)

Identifiers

Cite

B. Flipon, Clément Keller, R. Quey, Fabrice Barbe. A full-field crystal-plasticity analysis of bimodal polycrystals. International Journal of Solids and Structures, 2020, 184, pp.178-192. ⟨10.1016/j.ijsolstr.2019.02.005⟩. ⟨hal-02184404⟩
57 View
98 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More