|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Viscoplastic Response of Two Phase Metal-metal Composites: A Comparison between Finite Element (FE) and Fast Fourier Transform (FFT) Based Predictions
||Sihwa Sung, Myeongjin Lee, Gaeun Son, Sukbin Lee
|On-Site Speaker (Planned)
The object of this study is to predict mechanical behaviors of metal-metal composites during uniaxial tensile loading through two simulation approaches in the context of crystal plasticity. Three kinds of unit cell models with different volume fraction of reinforcement particles (from 10 to 90 percentages) are instantiated to predict viscoplastic behavior of the composites. A periodic boundary condition is adopted in both simulation methods. In FE analysis, the unit cells are discretized with a hexagonal grid of 32×32×32 elements and in case of FFT 32×32×32 voxels with a single Fourier point/voxel are used. Flow curves, stress and strain distribution with contour images, and relative sustainability & activity are compared between FE and FFT. While both methods look very similar in terms of average stress and strain rate, local mechanical fields distribution are predicted to be somewhat different. The origin of this difference is discussed.
||Planned: None Selected