Stability of the magnetomechanical problem in magnetic shape memory alloys

George Chatzigeorgiou; Krishnendu Haldar; Dimitris C. Lagoudas

doi:10.1117/12.847739

30 March 2010 Stability of the magnetomechanical problem in magnetic shape memory alloys

George Chatzigeorgiou, Krishnendu Haldar, Dimitris C. Lagoudas

Proceedings Volume 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010; 76440Y (2010) https://doi.org/10.1117/12.847739
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

In this work we study the unstable phenomena that occur on Magnetic Shape Memory Alloys (MSMAs) during compression tests. Solving the coupled magnetomechanical problem we observe that during the reorientation process the material presents strong non-uniformity, in the form of localized zones, in the distribution of the magnetic, the stress and the strain field. This non-uniformity is due to loss of ellipticity of the coupled problem during the martensitic reorientation and affects significantly the reorientation process. The identification of the stability conditions of the magnetomechanical problem is achieved by performing stability analysis.

Citation Download Citation

George Chatzigeorgiou, Krishnendu Haldar, and Dimitris C. Lagoudas "Stability of the magnetomechanical problem in magnetic shape memory alloys", Proc. SPIE 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010, 76440Y (30 March 2010); https://doi.org/10.1117/12.847739

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