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Hexahedral Mesh Generation for 3D Computational Materials Modeling

Owen, Steven J., Judith A. Brown, Corey D. Ernst, Hojun Lim, Kevin N. Long

Proceedings, 26th International Meshing Roundtable, Elsevier, Science Direct, September 18-21 2017


26th International Meshing Roundtable
Barcelona, Spain
September 18-21, 2017

Steven J. Owen, Sandia National Laboratories, US,
Judith A. Brown, Sandia National Laboratories, US,
Corey D. Ernst, Elemental Technologies, US,
Hojun Lim, Sandia National Laboratories, US,
Kevin N. Long, Sandia National Laboratories, US,

A parallel, adaptive overlay grid procedure is proposed for use in generating all-hex meshes for stochastic (SVE) and representative (RVE) volume elements in computational materials modeling. The mesh generation process is outlined including several new advancements such as data filtering to improve mesh quality from voxelated and 3D image sources, improvements to the primal contouring method for constructing material interfaces and pillowing to improve mesh quality at boundaries. We show specific examples in crystal plasticity and syntactic foam modeling that have benefitted from the proposed mesh generation procedure and illustrate results of the procedure with several practical mesh examples.

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