Journal
ACTA MATERIALIA
Volume 57, Issue 6, Pages 1777-1784Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2008.12.017
Keywords
Microstructures; Taylor-type crystal plasticity models; Plastic deformation; Spectral methods
Funding
- NSF [CMS-0654179, CMS-0727931]
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In this paper, we explore efficient representation of all of the functions central to crystal plasticity simulations in their complete respective domains using discrete Fourier transforms (DFTs). This new DFT approach allows for compact representation and fast retrieval of crystal plasticity solutions for a crystal of any orientation subjected to any deformation mode. The approach has been successfully applied to a rigid-viscoplastic Taylor-type model for face-centered cubic polycrystals. It is observed that the novel approach described herein is able to speed up the conventional crystal plasticity computations by two orders of magnitude. Details of this approach are described and validated in this paper through a few example case studies. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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