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Special Topics in Structural Dynamics, Volume 6 pp 561–570Cite as

Harvesting of Ambient Floor Vibration Energy Utilizing Micro-Electrical Mechanical Devices

Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Recent advances in device fabrication and energy harvesting technology combined with an increasing need for sustainable energy generation have encouraged the development of the micro-electro-mechanical (MEMS) energy harvesting model for floor vibrations presented herein. By calibrating arrays of MEMS energy harvesters in resonance with floor vibrations, building occupants become sustainable energy sources. Optimization of these harvesters to frequency ranges of floor vibrations, subsequent synchronization of harvester location to occupant flow and improved electromechanical modeling may result in an efficient, passive power source for low-demand applications independent of external environmental conditions.

A model of a floor-harvester system is developed, utilizing ambient floor vibration to excite MEMS energy harvesters via harmonic base translation. These devices then convert the mechanical vibrations to electrical power. Design considerations for piezoelectric-based energy harvesters inspired by MEMS-scale arrays are investigated. Single degree of freedom and distributed beam parameter electromechanical models are employed to predict performance, by optimization of resonant frequencies from measured low-level ambient vibrations. A simplified analytical expression for a frequency correction factor accounting for shear deformation and rotatory inertia effects is derived in terms of fundamental system parameters. Floor and energy harvesting device models are validated by comparison to experimental results and numerical modeling, respectively.

Keywords

  • Energy harvesting
  • Floor vibration
  • Timoshenko beam
  • Resonance
  • MDOF model

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Acknowledgements

The prior research performed on the experimental floor system was supported in part by National Science Foundation Grant No. CMS-9900099. The authors wish to acknowledge the work completed by the principal investigator of that research initiative, Dr. Linda Hanagan.

Author information

Authors and Affiliations

  1. Department of Civil and Environmental Engineering, Marquette University, Milwaukee, WI, 53233, USA

    Joshua A. Schultz

  2. Department of Civil and Architectural Engineering and Construction Management, Milwaukee School of Engineering, Milwaukee, WI, 53202, USA

    Christopher H. Raebel

Authors
  1. Joshua A. Schultz
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  2. Christopher H. Raebel
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Corresponding author

Correspondence to Joshua A. Schultz .

Editor information

Editors and Affiliations

  1. University of Cincinnati, Cincinnati, 45221-0018, Ohio, USA

    Randall Allemang

  2. , The Enterprise Program, Michigan Technological University, Townsend Drive 1400, Houghton, 49931, Mississippi, USA

    James De Clerck

  3. , Dept. of Mechanical Engineering, University of Massachusetts Lowell, Riverside St. 197, Lowell, 01854, Massachusetts, USA

    Christopher Niezrecki

  4. & State University, Department of Mechanical Engineering, Virginia Polytechnic Institute, Randolph Hall 114 T, Blacksburg, 24060, Virginia, USA

    Alfred Wicks

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Schultz, J.A., Raebel, C.H. (2013). Harvesting of Ambient Floor Vibration Energy Utilizing Micro-Electrical Mechanical Devices. In: Allemang, R., De Clerck, J., Niezrecki, C., Wicks, A. (eds) Special Topics in Structural Dynamics, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6546-1_59

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  • DOI: https://doi.org/10.1007/978-1-4614-6546-1_59

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