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A Multipole Magnetoactive Elastomer for Vibration-Driven Locomotion.

Marius Reiche1, Tatiana I Becker1, Gennady V Stepanov2

  • 1Technical Mechanics Group, Faculty of Mechanical Engineering, Technische Universität Ilmenau, Ilmenau, Germany.

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|April 3, 2023
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Summary
This summary is machine-generated.

Magnetoactive elastomers (MAEs) enable vibration-driven robots. These smart materials bend in magnetic fields, creating locomotion dependent on actuation frequency.

Keywords:
bendinglocomotionmagnetic actuationmagnetoactive elastomermobile robotvibration

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Area of Science:

  • Materials Science
  • Robotics
  • Physics

Background:

  • Magnetoactive elastomers (MAEs) are smart materials with tunable elastic and magnetic properties.
  • Incorporating magnetic particles transforms MAEs into elastic magnets, responsive to external magnetic fields.
  • These properties offer significant potential for advanced scientific research and engineering applications.

Purpose of the Study:

  • To investigate a multipole magnetoactive elastomer (MAE) as an actuation element for vibration-driven locomotion robots.
  • To analyze the quasi-static bending behavior of a three-pole MAE beam with silicone bristles.
  • To demonstrate unidirectional locomotion using magnetic actuation.

Main Methods:

  • Experimental investigation of MAE quasi-static bending in a uniform magnetic field.
  • Development of a theoretical model utilizing magnetic torque to predict field-induced bending.
  • Fabrication and testing of two prototype elastomeric bristle-bots utilizing external or integrated alternating magnetic field sources.

Main Results:

  • The MAE exhibits field-induced bending, enabling actuation.
  • A theoretical model accurately describes the bending shapes based on magnetic torque.
  • Unidirectional locomotion was achieved, with speed showing strong resonant dependency on magnetic actuation frequency.

Conclusions:

  • Multipole MAEs can serve as effective actuation elements for vibration-driven robots.
  • The locomotion principle relies on asymmetric friction and inertia forces generated by field-induced bending vibrations.
  • Optimizing actuation frequency is crucial for maximizing robot speed and performance.