期刊
出版社
AMER SOC MECHANICAL ENGINEERS
关键词
1-D periodic structure; strongly nonlinear; asymmetric; non-reciprocity; dispersion relationship analysis
资金
- National Science Foundation under Emerging Frontiers in Research and Innovation (EFRI) Grant [1741565]
- Emerging Frontiers & Multidisciplinary Activities
- Directorate For Engineering [1741565] Funding Source: National Science Foundation
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.
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