Theoretical and Experimental Analysis of Bifurcation Induced Passive Bandgap Reconfiguration

  • Michael J. Mazzoleni
  • Brian P. Bernard
  • Nicolas Garraud
  • David P. Arnold
  • Brian P. Mann
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

This paper presents a theoretical analysis and experimental validation of passively reconfigurable bandgaps in a 1D chain of oscillators. Nonlinearities in the system result in a morphing of the bandgap structure when the excitation amplitude passes a certain threshold. Specifically, an asymmetric bistability is used to achieve amplitude dependent filtering through passive bandgap reconfiguration. The experimental system consists of a 1D chain of axially aligned pendulums arranged in dimer unit cells with nearest neighbor coupling. Repulsive magnets are used to induce bistability in the pendulums. Comparisons between experiments and theory show good agreement.

Keywords

Vibrations Wave propagation Bandgaps Bifurcations Bistability 

Notes

Acknowledgements

The authors would like to thank Xiao Wen, Jake Greenstein, Charlie Arentzen, and Jared Little for their contributions to this project. This project was primarily funded by the NSF through grants CMMI-1300307 and CMMI-1300658, and it was also supported by the ARO.

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Copyright information

© The Society for Experimental Mechanics, Inc. 2016

Authors and Affiliations

  • Michael J. Mazzoleni
    • 1
  • Brian P. Bernard
    • 2
  • Nicolas Garraud
    • 3
  • David P. Arnold
    • 3
  • Brian P. Mann
    • 1
  1. 1.Dynamical Systems Laboratory, Department of Mechanical Engineering and Materials ScienceDuke UniversityDurhamUSA
  2. 2.Autonomous Systems Laboratory, Department of MathematicsSchreiner UniversityKerrvilleUSA
  3. 3.Interdisciplinary Microsystems Group, Department of Electrical and Computer EngineeringUniversity of FloridaGainesvilleUSA

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