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8783608 
Journal Article 
A numerical study into element type and mesh resolution for crystal plasticity finite element modeling of explicit grain structures 
Feather, W; Lim, H; Knezevic, M 
2021 
Yes 
Computational Mechanics
ISSN: 0178-7675 
67 
1 
33-55 
English 
WOS:000568689700001 
A large number of massive crystal-plasticity-finite-element (CPFE) simulations are performed and post-processed to reveal the effects of element type and mesh resolution on accuracy of predicted mechanical fields over explicit grain structures. A CPFE model coupled with Abaqus/Standard is used to simulate simple-tension and simple-shear deformations to facilitate such quantitative mesh sensitivity studies. A grid-based polycrystalline grain structure is created synthetically by a phase-field simulation and converted to interface-conformal hexahedral and tetrahedral meshes of variable resolution. Procedures for such interface-conformal mesh generation over complex shapes are developed. FE meshes consisting of either hexahedral or tetrahedral, fully integrated as linear or quadratic elements are used for the CPFE simulations. It is shown that quadratic tetrahedral and linear hexahedral elements are more accurate for CPFE modeling than linear tetrahedral and quadratic hexahedral elements. Furthermore, tetrahedral elements are more desirable due to fast mesh generation and flexibility to describe geometries of grain structures. 
Solids; Finite element methods; Plasticity; Micromechanics; Mesh sensitivity; DIFFRACTION CONTRAST TOMOGRAPHY; TEXTURE DEVELOPMENT; STRAIN-RATE; MICROMECHANICAL SOLVER; CONSTITUTIVE LAW; ALPHA-URANIUM; POLYCRYSTALLINE; DEFORMATION; MICROSTRUCTURE; SIMULATION 
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