Actuation behavior in patterned magnetorheological elastomers

Simulation, experiment, and modeling

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

Abstract

Magnetorheological elastomers (MREs) are an emerging class of smart materials whose mechanical behavior varies in the presence of a magnetic field. Historically MREs have been comprised of soft-magnetic iron particles in a compliant matrix such as silicone elastomer. Numerous works have experimentally cataloged the MRE effect, or increase in shear stiffness, versus the applied field. Several other researchers have derived constitutive models for the large deformation behavior of MREs. In almost all cases the arrays of embedded particles, and or the particles themselves, are assumed magnetically symmetric with respect to the external magnetic field, i.e. the bulk materials exhibit magnetic symmetry in the given experimental or analytical configuration. In this work the author presents results of dynamic shear experiments, Lagrangian dynamic analysis, and static shear simulations on MRE material systems that exhibit broken magnetic symmetry. These new materials utilize barium hexaferrite powder as the magnetically anisotropic filler combined with a compliant silicone elastomer matrix. Simulations of representative laminate structures comprised of varied arrays of magnetic particles exhibit novel actuation behaviors including reversible shearing deformation, variable magnetostriction, and most surprisingly, piezomagnetism. Results of dynamic shear experiments and analytical modeling support predicted shearing actuation responses in MREs having broken symmetry and only in those systems.

Original languageEnglish (US)
Title of host publicationASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012
Pages177-184
Number of pages8
DOIs
StatePublished - Dec 1 2012
EventASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012 - Stone Mountain, GA, United States
Duration: Sep 19 2012Sep 21 2012

Publication series

NameASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012
Volume1

Other

OtherASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012
CountryUnited States
CityStone Mountain, GA
Period9/19/129/21/12

Fingerprint

Elastomers
Experiments
Shearing
Silicones
Magnetic fields
Intelligent materials
Magnetostriction
Magnetic materials
Barium
Constitutive models
Dynamic analysis
Laminates
Fillers
Stiffness
Iron
Powders

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Civil and Structural Engineering
  • Mechanics of Materials

Cite this

Vonlockette, P. R. (2012). Actuation behavior in patterned magnetorheological elastomers: Simulation, experiment, and modeling. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012 (pp. 177-184). (ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012; Vol. 1). https://doi.org/10.1115/SMASIS2012-8143
Vonlockette, Paris R. / Actuation behavior in patterned magnetorheological elastomers : Simulation, experiment, and modeling. ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. 2012. pp. 177-184 (ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012).
@inproceedings{536809f3cdab4c7ba82f17c3e5883c6f,
title = "Actuation behavior in patterned magnetorheological elastomers: Simulation, experiment, and modeling",
abstract = "Magnetorheological elastomers (MREs) are an emerging class of smart materials whose mechanical behavior varies in the presence of a magnetic field. Historically MREs have been comprised of soft-magnetic iron particles in a compliant matrix such as silicone elastomer. Numerous works have experimentally cataloged the MRE effect, or increase in shear stiffness, versus the applied field. Several other researchers have derived constitutive models for the large deformation behavior of MREs. In almost all cases the arrays of embedded particles, and or the particles themselves, are assumed magnetically symmetric with respect to the external magnetic field, i.e. the bulk materials exhibit magnetic symmetry in the given experimental or analytical configuration. In this work the author presents results of dynamic shear experiments, Lagrangian dynamic analysis, and static shear simulations on MRE material systems that exhibit broken magnetic symmetry. These new materials utilize barium hexaferrite powder as the magnetically anisotropic filler combined with a compliant silicone elastomer matrix. Simulations of representative laminate structures comprised of varied arrays of magnetic particles exhibit novel actuation behaviors including reversible shearing deformation, variable magnetostriction, and most surprisingly, piezomagnetism. Results of dynamic shear experiments and analytical modeling support predicted shearing actuation responses in MREs having broken symmetry and only in those systems.",
author = "Vonlockette, {Paris R.}",
year = "2012",
month = "12",
day = "1",
doi = "10.1115/SMASIS2012-8143",
language = "English (US)",
isbn = "9780791845097",
series = "ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012",
pages = "177--184",
booktitle = "ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012",

}

Vonlockette, PR 2012, Actuation behavior in patterned magnetorheological elastomers: Simulation, experiment, and modeling. in ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012, vol. 1, pp. 177-184, ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012, Stone Mountain, GA, United States, 9/19/12. https://doi.org/10.1115/SMASIS2012-8143

Actuation behavior in patterned magnetorheological elastomers : Simulation, experiment, and modeling. / Vonlockette, Paris R.

ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. 2012. p. 177-184 (ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012; Vol. 1).

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

TY - GEN

T1 - Actuation behavior in patterned magnetorheological elastomers

T2 - Simulation, experiment, and modeling

AU - Vonlockette, Paris R.

PY - 2012/12/1

Y1 - 2012/12/1

N2 - Magnetorheological elastomers (MREs) are an emerging class of smart materials whose mechanical behavior varies in the presence of a magnetic field. Historically MREs have been comprised of soft-magnetic iron particles in a compliant matrix such as silicone elastomer. Numerous works have experimentally cataloged the MRE effect, or increase in shear stiffness, versus the applied field. Several other researchers have derived constitutive models for the large deformation behavior of MREs. In almost all cases the arrays of embedded particles, and or the particles themselves, are assumed magnetically symmetric with respect to the external magnetic field, i.e. the bulk materials exhibit magnetic symmetry in the given experimental or analytical configuration. In this work the author presents results of dynamic shear experiments, Lagrangian dynamic analysis, and static shear simulations on MRE material systems that exhibit broken magnetic symmetry. These new materials utilize barium hexaferrite powder as the magnetically anisotropic filler combined with a compliant silicone elastomer matrix. Simulations of representative laminate structures comprised of varied arrays of magnetic particles exhibit novel actuation behaviors including reversible shearing deformation, variable magnetostriction, and most surprisingly, piezomagnetism. Results of dynamic shear experiments and analytical modeling support predicted shearing actuation responses in MREs having broken symmetry and only in those systems.

AB - Magnetorheological elastomers (MREs) are an emerging class of smart materials whose mechanical behavior varies in the presence of a magnetic field. Historically MREs have been comprised of soft-magnetic iron particles in a compliant matrix such as silicone elastomer. Numerous works have experimentally cataloged the MRE effect, or increase in shear stiffness, versus the applied field. Several other researchers have derived constitutive models for the large deformation behavior of MREs. In almost all cases the arrays of embedded particles, and or the particles themselves, are assumed magnetically symmetric with respect to the external magnetic field, i.e. the bulk materials exhibit magnetic symmetry in the given experimental or analytical configuration. In this work the author presents results of dynamic shear experiments, Lagrangian dynamic analysis, and static shear simulations on MRE material systems that exhibit broken magnetic symmetry. These new materials utilize barium hexaferrite powder as the magnetically anisotropic filler combined with a compliant silicone elastomer matrix. Simulations of representative laminate structures comprised of varied arrays of magnetic particles exhibit novel actuation behaviors including reversible shearing deformation, variable magnetostriction, and most surprisingly, piezomagnetism. Results of dynamic shear experiments and analytical modeling support predicted shearing actuation responses in MREs having broken symmetry and only in those systems.

UR - http://www.scopus.com/inward/record.url?scp=84892658372&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84892658372&partnerID=8YFLogxK

U2 - 10.1115/SMASIS2012-8143

DO - 10.1115/SMASIS2012-8143

M3 - Conference contribution

SN - 9780791845097

T3 - ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012

SP - 177

EP - 184

BT - ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012

ER -

Vonlockette PR. Actuation behavior in patterned magnetorheological elastomers: Simulation, experiment, and modeling. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. 2012. p. 177-184. (ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012). https://doi.org/10.1115/SMASIS2012-8143