A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys

Doug LaMaster, Heidi P Feigenbaum, Isaac Nelson, Constantin Ciocanel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Magnetic shape memory alloys (MSMAs) have attracted interest because of their considerable recoverable strain (up to 10%) and fast response time (1 kilohertz or higher). MSMAs are comprised of martensitic variants that have tetragonal unit cells and a magnetization vector that is innately aligned with the short side of the unit cell. These variants rotate either to align the magnetization vector with an applied magnetic field or to align the short side of the unit cell with an applied compressive stress. This reorientation leads to a mechanical strain and an overall change in the material's magnetization, allowing MSMAs to be used as actuators, sensors, and power harvesters. This paper builds upon the work of Kiefer and Lagoudas [4,5] as well as improvements proposed by LaMaster et al. [1] to present a thermodynamic based model to predict the response of an MSMA to axial mechanical loading and transverse magnetic loading. This work is unique, however, in its use of a memory variable, which references the last stable configuration. This is similar to the approach used by Saint-Sulpice [2] in modeling SMA wires. The resulting model has zero driving force for reorientation of variants at the beginning of any load and again when the load is removed. Thus the model predicts what is seen physically, that the material is stable when no magneto-mechanical load is present. Furthermore, this model is more physical and less empirical than others in the literature, having only 2 material parameters associated with the stress-strain or stress-field response. In addition, this model includes evolution rules for the magnetic domain volume fractions and the angle of rotation of the magnetization vectors based on thermodynamic requirements. The resulting model is calibrated and predictions are compared with both the more established Keifer and Lagoudas model as well as experimental data. Results show decent correlation with experiments. The model can be further improved by calibrating the demagnetization factor to experimentally measured changes in magnetic field.

Original languageEnglish (US)
Title of host publicationASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013
PublisherAmerican Society of Mechanical Engineers
Volume1
ISBN (Print)9780791856031
DOIs
StatePublished - 2013
EventASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013 - Snowbird, UT, United States
Duration: Sep 16 2013Sep 18 2013

Other

OtherASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013
CountryUnited States
CitySnowbird, UT
Period9/16/139/18/13

Fingerprint

Shape memory effect
Data storage equipment
Magnetization
Thermodynamics
Magnetic fields
Demagnetization
Magnetic domains
Harvesters
Compressive stress
Volume fraction
Actuators
Wire
Sensors

ASJC Scopus subject areas

  • Artificial Intelligence
  • Civil and Structural Engineering

Cite this

LaMaster, D., Feigenbaum, H. P., Nelson, I., & Ciocanel, C. (2013). A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys. In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013 (Vol. 1). [SMASIS2013-3036] American Society of Mechanical Engineers. https://doi.org/10.1115/SMASIS2013-3036

A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys. / LaMaster, Doug; Feigenbaum, Heidi P; Nelson, Isaac; Ciocanel, Constantin.

ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013. Vol. 1 American Society of Mechanical Engineers, 2013. SMASIS2013-3036.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

LaMaster, D, Feigenbaum, HP, Nelson, I & Ciocanel, C 2013, A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys. in ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013. vol. 1, SMASIS2013-3036, American Society of Mechanical Engineers, ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013, Snowbird, UT, United States, 9/16/13. https://doi.org/10.1115/SMASIS2013-3036
LaMaster D, Feigenbaum HP, Nelson I, Ciocanel C. A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys. In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013. Vol. 1. American Society of Mechanical Engineers. 2013. SMASIS2013-3036 https://doi.org/10.1115/SMASIS2013-3036
LaMaster, Doug ; Feigenbaum, Heidi P ; Nelson, Isaac ; Ciocanel, Constantin. / A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys. ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013. Vol. 1 American Society of Mechanical Engineers, 2013.
@inproceedings{d43a7dced0d246ac96b83a25a65993ee,
title = "A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys",
abstract = "Magnetic shape memory alloys (MSMAs) have attracted interest because of their considerable recoverable strain (up to 10{\%}) and fast response time (1 kilohertz or higher). MSMAs are comprised of martensitic variants that have tetragonal unit cells and a magnetization vector that is innately aligned with the short side of the unit cell. These variants rotate either to align the magnetization vector with an applied magnetic field or to align the short side of the unit cell with an applied compressive stress. This reorientation leads to a mechanical strain and an overall change in the material's magnetization, allowing MSMAs to be used as actuators, sensors, and power harvesters. This paper builds upon the work of Kiefer and Lagoudas [4,5] as well as improvements proposed by LaMaster et al. [1] to present a thermodynamic based model to predict the response of an MSMA to axial mechanical loading and transverse magnetic loading. This work is unique, however, in its use of a memory variable, which references the last stable configuration. This is similar to the approach used by Saint-Sulpice [2] in modeling SMA wires. The resulting model has zero driving force for reorientation of variants at the beginning of any load and again when the load is removed. Thus the model predicts what is seen physically, that the material is stable when no magneto-mechanical load is present. Furthermore, this model is more physical and less empirical than others in the literature, having only 2 material parameters associated with the stress-strain or stress-field response. In addition, this model includes evolution rules for the magnetic domain volume fractions and the angle of rotation of the magnetization vectors based on thermodynamic requirements. The resulting model is calibrated and predictions are compared with both the more established Keifer and Lagoudas model as well as experimental data. Results show decent correlation with experiments. The model can be further improved by calibrating the demagnetization factor to experimentally measured changes in magnetic field.",
author = "Doug LaMaster and Feigenbaum, {Heidi P} and Isaac Nelson and Constantin Ciocanel",
year = "2013",
doi = "10.1115/SMASIS2013-3036",
language = "English (US)",
isbn = "9780791856031",
volume = "1",
booktitle = "ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013",
publisher = "American Society of Mechanical Engineers",

}

TY - GEN

T1 - A memory variable approach to modeling the magneto-mechanical behavior of magnetic shape memory alloys

AU - LaMaster, Doug

AU - Feigenbaum, Heidi P

AU - Nelson, Isaac

AU - Ciocanel, Constantin

PY - 2013

Y1 - 2013

N2 - Magnetic shape memory alloys (MSMAs) have attracted interest because of their considerable recoverable strain (up to 10%) and fast response time (1 kilohertz or higher). MSMAs are comprised of martensitic variants that have tetragonal unit cells and a magnetization vector that is innately aligned with the short side of the unit cell. These variants rotate either to align the magnetization vector with an applied magnetic field or to align the short side of the unit cell with an applied compressive stress. This reorientation leads to a mechanical strain and an overall change in the material's magnetization, allowing MSMAs to be used as actuators, sensors, and power harvesters. This paper builds upon the work of Kiefer and Lagoudas [4,5] as well as improvements proposed by LaMaster et al. [1] to present a thermodynamic based model to predict the response of an MSMA to axial mechanical loading and transverse magnetic loading. This work is unique, however, in its use of a memory variable, which references the last stable configuration. This is similar to the approach used by Saint-Sulpice [2] in modeling SMA wires. The resulting model has zero driving force for reorientation of variants at the beginning of any load and again when the load is removed. Thus the model predicts what is seen physically, that the material is stable when no magneto-mechanical load is present. Furthermore, this model is more physical and less empirical than others in the literature, having only 2 material parameters associated with the stress-strain or stress-field response. In addition, this model includes evolution rules for the magnetic domain volume fractions and the angle of rotation of the magnetization vectors based on thermodynamic requirements. The resulting model is calibrated and predictions are compared with both the more established Keifer and Lagoudas model as well as experimental data. Results show decent correlation with experiments. The model can be further improved by calibrating the demagnetization factor to experimentally measured changes in magnetic field.

AB - Magnetic shape memory alloys (MSMAs) have attracted interest because of their considerable recoverable strain (up to 10%) and fast response time (1 kilohertz or higher). MSMAs are comprised of martensitic variants that have tetragonal unit cells and a magnetization vector that is innately aligned with the short side of the unit cell. These variants rotate either to align the magnetization vector with an applied magnetic field or to align the short side of the unit cell with an applied compressive stress. This reorientation leads to a mechanical strain and an overall change in the material's magnetization, allowing MSMAs to be used as actuators, sensors, and power harvesters. This paper builds upon the work of Kiefer and Lagoudas [4,5] as well as improvements proposed by LaMaster et al. [1] to present a thermodynamic based model to predict the response of an MSMA to axial mechanical loading and transverse magnetic loading. This work is unique, however, in its use of a memory variable, which references the last stable configuration. This is similar to the approach used by Saint-Sulpice [2] in modeling SMA wires. The resulting model has zero driving force for reorientation of variants at the beginning of any load and again when the load is removed. Thus the model predicts what is seen physically, that the material is stable when no magneto-mechanical load is present. Furthermore, this model is more physical and less empirical than others in the literature, having only 2 material parameters associated with the stress-strain or stress-field response. In addition, this model includes evolution rules for the magnetic domain volume fractions and the angle of rotation of the magnetization vectors based on thermodynamic requirements. The resulting model is calibrated and predictions are compared with both the more established Keifer and Lagoudas model as well as experimental data. Results show decent correlation with experiments. The model can be further improved by calibrating the demagnetization factor to experimentally measured changes in magnetic field.

UR - http://www.scopus.com/inward/record.url?scp=84896323827&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896323827&partnerID=8YFLogxK

U2 - 10.1115/SMASIS2013-3036

DO - 10.1115/SMASIS2013-3036

M3 - Conference contribution

SN - 9780791856031

VL - 1

BT - ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013

PB - American Society of Mechanical Engineers

ER -