Abstract
In this contribution, a modelling framework for functional fatigue in shape memory alloy wires is introduced. The approach is in particular designed to reproduce the effective response determined by experiments as published in, e.g., Eggeler et al. (Mat Sci Eng A 378:24–33, 2004). In this context, the decrease of transformation stresses, the increase of irreversible strains, and the occurrence of “characteristic points” with respect to the stress-strain relation is explicitly covered in the model formulation. The modelling approach for the phase transformations itself offers a large potential for further micromechanically well-motivated model extensions.
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Notes
A maximum of two simultaneously occurring discontinuities as this work proceeds.
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The financial support by the Mercator Research Centre Ruhr (MERCUR) through project PR-2013-0048 is gratefully acknowledged.
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Bartel, T., Osman, M. & Menzel, A. A phenomenological model for the simulation of functional fatigue in shape memory alloy wires. Meccanica 52, 973–988 (2017). https://doi.org/10.1007/s11012-016-0419-x
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DOI: https://doi.org/10.1007/s11012-016-0419-x