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Published October 2007 | public
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A micromechanics-inspired constitutive model for shape-memory alloys


This paper presents a three-dimensional constitutive model for shape-memory alloys that generalizes the one-dimensional model presented earlier (Sadjadpour and Bhattacharya 2007 Smart Mater. Struct. 16 S51–62). These models build on recent micromechanical studies of the underlying microstructure of shape-memory alloys, and a key idea is that of an effective transformation strain of the martensitic microstructure. This paper explains the thermodynamic setting of the model, demonstrates it through examples involving proportional and non-proportional loading, and shows that the model can be fitted to incorporate the effect of texture in polycrystalline shape-memory alloys.

Additional Information

Copyright © Institute of Physics and IOP Publishing Limited 2007. Received 18 March 2007, in final form 16 July 2007. Published 22 August 2007. Print publication: Issue 5 (October 2007) We gratefully appreciate the partial financial support of the Army Research Office through the MURI grant DAAD 19-01-0517 and the Office of Naval Research through N00014-05-1-0202.


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