TY - GEN
T1 - Acoustic non-reciprocal band structure in a passive, nonlinear, 1D material
AU - Fang, Lezheng
AU - Darabi, Amir
AU - Vakakis, Alexander F.
AU - Leamy, Michael J.
N1 - Publisher Copyright:
Copyright © 2019 ASME.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
KW - 1-D periodic structure
KW - Asymmetric
KW - Dispersion relationship analysis
KW - Non-reciprocity
KW - Strongly nonlinear
UR - http://www.scopus.com/inward/record.url?scp=85076532636&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85076532636&partnerID=8YFLogxK
U2 - 10.1115/DETC2019-97888
DO - 10.1115/DETC2019-97888
M3 - Conference contribution
AN - SCOPUS:85076532636
T3 - Proceedings of the ASME Design Engineering Technical Conference
BT - 31st Conference on Mechanical Vibration and Noise
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2019
Y2 - 18 August 2019 through 21 August 2019
ER -