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

P. Junker, K. Hackl.

Computational Mechanics, 47, 505-517, (2011)

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 pseudoplastic 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. © Springer-Verlag 2010.

Keyword(s): shape memory alloys, finite elements, poly-crystal, re-orientation
Cite as: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79958787698&doi=10.1007%2fs00466-010-0555-4&partnerID=40&md5=7d62fc218b6f3306f640107f1390b211
DOI: 10.1007/s00466-010-0555-4
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