|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||An Elastic Response of a Three-dimensional Polycrystalline Material: The Effect of Grain Boundary Curvature.
||Myeongjin Lee, Gaeun Son, Sihwa Sung, Sukbin Lee
|On-Site Speaker (Planned)
The elastic response to thermal loading of a three-dimensional polycrystalline material has been carried out where its inhomogeneity results from both anisotropy of the elastic modulus and thermal expansion coefficient and from the grain boundary curvature. The digital polycrystalline microstructure based on the isotropic grain growth simulation via Monte Carlo Potts model was introduced and three-dimensional tetrahedral mesh elements were generated on it. Then, the hexagonal close packed (HCP) thermal expansion coefficient tensor was respectively assigned to individual grains. In present study, the finite element method simulation was conducted to examine the spatial distributions of mechanical fields inside the polycrystal. We specially analyzed the stress and strain distribution according to the grain boundary curvature using extreme value analysis by examining the tails of the cumulative probability functions.
||Planned: None Selected