Design parameters for magneto-elastic soft actuators

Novel soft actuators can be designed from ferrogels by combining the elastic behavior of a polymer matrix with the magnetic properties of a magnetic filler. A thorough understanding of the mechanical behavior of ferrogel actuation is essential for optimizing actuator performance. For actuation by li...

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Bibliographic Details
Published in:Smart materials and structures 2010-05, Vol.19 (5), p.055017-055017
Main Authors: Snyder, R L, Nguyen, V Q, Ramanujan, R V
Format: Article
Language:English
Subjects:
Actuation
Actuators
Applied sciences
Composites
Deformation
Design parameters
Elongation
Exact sciences and technology
Forms of application and semi-finished materials
General equipment and techniques
Hysteresis
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Magnetic fields
Magnetic properties
Magnetostriction
Physics
Polymer industry, paints, wood
Technology of polymers
Transducers
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Summary:Novel soft actuators can be designed from ferrogels by combining the elastic behavior of a polymer matrix with the magnetic properties of a magnetic filler. A thorough understanding of the mechanical behavior of ferrogel actuation is essential for optimizing actuator performance. For actuation by linear magnetostriction, the influence of geometrical parameters on the onset and magnitude of hysteretic loss, the range for the continuous deformation ratio, the rate of change of the deformation ratio with respect to the field strength, and the saturation elongation were modeled. These results demonstrate that geometrical design parameters such as specimen length, aspect ratio, and distance from the magnetic field source can be used to tune the performance of ferrogels.
ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/19/5/055017