Efficient and accurate two-scale simulation of non-linear heterogeneous microstructures |
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Authors: | Julian Kochmann Stephan Wulfinghoff Bob Svendsen Stefanie Reese |
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Affiliation: | 1. Institute of Applied Mechanics, RWTH-Aachen University, D-52074 Aachen;2. Material Mechanics, RWTH-Aachen University, D-52062 Aachen Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, D-40237 Düsseldorf |
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Abstract: | This work is concerned with the development of an efficient two-scale numerical scheme for the prediction of the local and effective mechanical response of heterogeneous materials with non-linear constitutive behavior. In order to ensure both, accurate micromechanical fields and feasible overall CPU-times, an efficient but rather simple solution scheme is proposed. Its capabilities are demonstrated using the FE-FFT method [2,3] for the solution of simple two-scale problems. As an example, two-dimensional polycrystalline microstructures with an elasto-viscoplastic constitutive law are considered. (© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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