|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||A Domain Decomposition Parallel Implementation of an Elasto-visco-plastic Fast Fourier Transform Micromechanical Solver with Spectral Database Constitutive Representation
||Adnan Eghtesad, Timothy Barrett, Kai Germaschewski, Ricardo A. Lebensohn, Rodney J. McCabe, Marko Knezevic
|On-Site Speaker (Planned)
We present the first domain decomposition parallel implementation of an elasto-visco-plastic fast Fourier transform (EVPFFT) solver using message passing interface (MPI) to efficiently predict mechanical response and microstructure evolution of polycrystalline metals. The domain decomposition is performed over voxels of a periodic microstructural call, which is a representative volume element (RVE) of a material. Furthermore, we implement a spectral crystal plasticity (SCP) single crystal model into the EVPFFT full-field solver. The SCP database allows for non-iterative retrieval of constitutive solutions for a crystal of any orientation subjected to any state of deformation at every voxel. Details of this approach are described and validated through example case studies involving a elasto-visco-plastic response and microstructure evolution of polycrystalline copper. It is observed that the novel implementation is able to significantly speed up the overall EVPFFT calculations. As a result, the implementation facilitates efficient simulations of large voxel-based microstructures under time dependent deformation.
||Planned: Supplemental Proceedings volume