Phenomenological modeling of the thermo-magneto-mechanical behavior of magnetic shape memory alloys
Abstract
Magnetic shape memory alloy is an interesting class of material that offers fast and contactless actuation associated with large deformation. This article deals with a novel constitutive model based on internal variables that describes the phenomenological behavior of magnetic shape memory alloys. Model formulation is developed within the framework of continuum mechanics and thermodynamics defining a mixture free energy potential based on four macroscopic phases. Zeeman effect is considered to incorporate the magnetic behavior. A numerical procedure is proposed to deal with the model nonlinearities. Model predictions are presented for different thermo-magneto-mechanical loadings treating reorientation and phase transformations. Numerical simulations are carried out showing the model capabilities and comparisons with experimental data available in the literature attesting its ability to capture the general thermo-magneto-mechanical behavior of magnetic shape memory alloys.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 24, 2018
- Source ID
- 10.1177/1045389x18798954
Entities
People
- Alberto Paiva
- Luciana L Silva Monteiro
- Marcelo A Savi
- Vandré F De Souza
Organizations
- Air Force Office of Scientific Research
- Federal Center of Technological Education Celso Suckow da Fonseca
- Federal University of Rio de Janeiro
- Fluminense Federal University
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- National Council for Scientific and Technological Development