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Finite element simulations of poly-crystalline shape memory alloys based on a micromechanical model

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Abstract

We present a finite element implementation of a micromechanically motivated model for poly-crystalline shape memory alloys, based on energy minimization principles. The implementation allows simulation of anisotropic material behavior as well as the pseudo-elastic and pseudo-plastic material response of whole samples. The evolving phase distribution over the entire specimen is calculated. The finite element model predicts the material properties for a relatively small number of grains. For different points of interest in the specimen the model can be consistently evaluated with a significantly higher number of grains in a post-processing step, which allows to predict the re-orientation of martensite at different loads. The influence of pre-texture on the material’s properties, due to some previous treatment like rolling, is discussed.

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Authors and Affiliations

  1. Institute of Computational Engineering, Ruhr-University of Bochum, Universitätsstraße 150, 44801, Bochum, Germany

    Philipp Junker & Klaus Hackl

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  1. Philipp Junker
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  2. Klaus Hackl
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Correspondence to Philipp Junker.

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Junker, P., Hackl, K. Finite element simulations of poly-crystalline shape memory alloys based on a micromechanical model. Comput Mech 47, 505–517 (2011). https://doi.org/10.1007/s00466-010-0555-4

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  • DOI: https://doi.org/10.1007/s00466-010-0555-4

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