Viscoelastic effects on the frequency response of elastomeric metastructures

Connor Pierce, Vincent Chen, James Hardin, Carson Willey, J. Daniel Berrigan, Abigail Juhl, Kathryn Matlack

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Metastructures exhibit vast potential for novel control of elastic wave propagation through careful engineering of their geometry. Recent research has studied such engineered materials and structures that utilize the coupled magneto-mechanical response of magnetoactive elastomers (MAE) to enable adaptive control of dynamic properties. However, MAEs exhibit viscoelastic behavior that strongly influences their frequency-dependent vibration transmission. Here, we computationally study the influence of viscoelasticity on the vibration transmission of an example metastructure using finite element method (FEM) simulations. Frequency-sweep simulations of the metastructure show strong dips in the transmission spectra that are associated with band gaps. A viscoelastic material model is employed, and the loss factor is parametrically varied to study the influence of different damping intensities. Furthermore, the effect of spatially-varying damping on the transmission spectrum is studied through partitioning of the material models used in the FEM simulations. The results show that increased damping causes a smoothing of structural peaks and widening of the transmission trough, with the maximum attenuation unaffected and even enhanced.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems XIII
EditorsPaul Fromme, Zhongqing Su
PublisherSPIE
ISBN (Electronic)9781510625990
DOIs
StatePublished - Jan 1 2019
EventHealth Monitoring of Structural and Biological Systems XIII 2019 - Denver, United States
Duration: Mar 4 2019Mar 7 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10972
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceHealth Monitoring of Structural and Biological Systems XIII 2019
CountryUnited States
CityDenver
Period3/4/193/7/19

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Keywords

  • Band gaps
  • Magneto-active elastomer
  • Metastructure
  • Vibration
  • Viscoelasticity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Pierce, C., Chen, V., Hardin, J., Willey, C., Berrigan, J. D., Juhl, A., & Matlack, K. (2019). Viscoelastic effects on the frequency response of elastomeric metastructures. In P. Fromme, & Z. Su (Eds.), Health Monitoring of Structural and Biological Systems XIII [109720I] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10972). SPIE. https://doi.org/10.1117/12.2513912