|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Computational Materials Discovery and Optimization: From 2D to Bulk Materials
||Developing Physically-based Three Dimensional Microstructures: Bridging Phase Field and Crystal Plasticity Models
||Hojun Lim, Fadi Abdeljawad, Steven J. Owen, Byron W. Hanks, Corbett C. Battaile
|On-Site Speaker (Planned)
Concurrent trends in various technologies are moving towards component miniaturization and increased realism in predictive simulations. This leads to a necessity for microstructure-aware analysis capabilities for a variety of applications. In order to better incorporate microstructures in continuum scale models, we use a novel finite element (FE) meshing technique to generate three-dimensional polycrystalline aggregates from a phase field model of grain microstructures. The proposed meshing technique creates hexahedral FE meshes with conformal smooth interfaces between adjacent grains. Three-dimensional realizations of grain microstructures from the phase field model were used in crystal plasticity simulations of polycrystalline iron. It is shown that the conformal meshes significantly reduce artificial stress localizations in voxelated meshes that exhibit the so-called wedding cake interfaces. This framework provides a direct link between two mesoscale models, phase field and crystal plasticity, and allows simulations of polycrystalline materials with physically-based topological features.
||Planned: A print-only volume