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Proceedings Paper

Model predictions of strain and magnetization responses under magneto-thermo-mechanical loading paths in magnetic shape memory alloys
Author(s): Krishnendu Haldar; Dimitris C. Lagoudas
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Paper Abstract

Magnetic shape memory alloys (MSMAs) have recently drawn considerable research interest due to their ability to produce magnetic field-induced strains (MFIS) , at least one order of magnitude higher than those of ordinary magnetostrictive materials. In the present work microstructure dependence of martensitic phase transformation and reorientation is taken into account by introducing internal variables into the model. The magneto-thermomechanical constitutive equations are derived in a thermodynamic consistent way. A 3-D stress-field-temperature phase diagram is predicted using the model for the case of field induced phase transformation (FIPT).

Paper Details

Date Published: 28 April 2011
PDF: 10 pages
Proc. SPIE 7978, Behavior and Mechanics of Multifunctional Materials and Composites 2011, 79781N (28 April 2011); doi: 10.1117/12.885035
Show Author Affiliations
Krishnendu Haldar, Texas A&M Univ. (United States)
Dimitris C. Lagoudas, Texas A&M Univ. (United States)

Published in SPIE Proceedings Vol. 7978:
Behavior and Mechanics of Multifunctional Materials and Composites 2011
Zoubeida Ounaies; Stefan S. Seelecke, Editor(s)

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