Acoustic non-reciprocal band structure in a passive, nonlinear, 1D material

Lezheng Fang, Amir Darabi, Alexander F. Vakakis, Michael J. Leamy

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

Abstract

Acoustic non-reciprocity, referring to the phenomenon of path-dependent propagation, has diverse applications in mechanical devices. This paper presents a numerical study on a periodic triangle-shape structure that breaks reciprocity in a passive manner over a broad range of frequency and energy. The proposed structure contains strong nonlinearity and geometric asymmetry, which contributes to a direction-dependent dispersion relationship. When the signal frequency falls in the band pass in one direction, and band gap in the other, a unidirectional wave propagation results. The system achieves giant non-reciprocity with minimal distortion in the frequency content of the signal.

Original languageEnglish (US)
Title of host publication31st Conference on Mechanical Vibration and Noise
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859285
DOIs
StatePublished - Jan 1 2019
EventASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2019 - Anaheim, United States
Duration: Aug 18 2019Aug 21 2019

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume8

Conference

ConferenceASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2019
CountryUnited States
CityAnaheim
Period8/18/198/21/19

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Keywords

  • 1-D periodic structure
  • Asymmetric
  • Dispersion relationship analysis
  • Non-reciprocity
  • Strongly nonlinear

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

Cite this

Fang, L., Darabi, A., Vakakis, A. F., & Leamy, M. J. (2019). Acoustic non-reciprocal band structure in a passive, nonlinear, 1D material. In 31st Conference on Mechanical Vibration and Noise (Proceedings of the ASME Design Engineering Technical Conference; Vol. 8). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/DETC2019-97888