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A Programmable Hybrid Energy Harvester: Leveraging Buckling and Magnetic Multistability.

Azam Arefi1, Abhilash Sreekumar1, Dimitrios Chronopoulos1

  • 1Department of Mechanical Engineering & Mecha(tro)nic System Dynamics (LMSD), KU Leuven, 9000 Gent, Belgium.

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Summary

This study presents a hybrid energy harvester for ultra-low-frequency vibrations. It offers programmable control over monostable, bistable, and multistable states for efficient energy capture in devices.

Keywords:
bistabilitybuckled beamdesign optimizationmagnetoelastic couplingmultistabilitysnap-throughvibration energy harvesting

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Area of Science:

  • Nonlinear Dynamics and Energy Harvesting
  • Mechanical Engineering
  • Materials Science

Background:

  • Increasing demand for self-powered devices necessitates efficient ultra-low-frequency vibration energy harvesting.
  • Existing harvesters often lack tunability for diverse ambient vibration environments.

Purpose of the Study:

  • To introduce a hybrid energy harvester with programmable multistable potential energy landscapes.
  • To enable tailored vibrational response and broadened operating bandwidths for enhanced energy capture.

Main Methods:

  • Development of a hybrid system combining elastic buckling and magnetic forces.
  • Utilizing an energy-based modeling framework in MATLAB to analyze system parameters.
  • Employing an inverse design approach to match target force-displacement profiles.

Main Results:

  • Demonstrated programmable transitions among monostable, bistable, and multistable regimes.
  • Identified key parameters (buckling amplitude, magnet spacing, polarity offset) for shaping potential energy landscapes.
  • Showcased feasibility of matching industrial force-displacement profiles.

Conclusions:

  • The proposed hybrid energy harvester offers modularity and tunability for low-frequency energy harvesting.
  • Insights into static potential landscapes provide a foundation for dynamic analyses and prototype validation.
  • The technology holds promise for adaptive vibration isolation and other nonlinear applications.