Skip to Main content Skip to Navigation
Journal articles

Large-scale 3D random polycrystals for the finite element method: Generation, meshing and remeshing

Abstract : A methodology is presented for the generation and meshing of large-scale three-dimensional random polycrystals. Voronoi tessellations are used and are shown to include morphological properties that make them particularly challenging to mesh with high element quality. Original approaches are presented to solve these problems: (i) "geometry regularization", which consists in removing the geometrical details of the polycrystal morphology, (ii) "multimeshing" which consists in using simultaneously several meshing algorithms to optimize mesh quality, and (iii) remeshing, by which a new mesh is constructed over a deformed mesh and the state variables are transported, for large strain applications. Detailed statistical analyses are conducted on the polycrystal morphology and mesh quality. The results are mainly illustrated by the high-quality meshing of polycrystals with large number of grains (up to 105), and the finite element method simulation of a plane strain compression of ε = 1.4 of a 3000-grain polycrystal. The presented algorithms are implemented and distributed in a free (open-source) software package: Neper.
Document type :
Journal articles
Complete list of metadata

Cited literature [49 references]  Display  Hide  Download
Contributor : Géraldine Fournier-Moulin <>
Submitted on : Tuesday, December 10, 2019 - 10:49:31 AM
Last modification on : Friday, June 11, 2021 - 5:12:08 PM
Long-term archiving on: : Wednesday, March 11, 2020 - 4:34:03 PM


Files produced by the author(s)



Romain Quey, P.R. Dawson, Fabrice Barbe. Large-scale 3D random polycrystals for the finite element method: Generation, meshing and remeshing. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2011, 200 (17-20), pp.1729-1745. ⟨10.1016/j.cma.2011.01.002⟩. ⟨hal-00858028⟩



Record views


Files downloads