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PubMed Publications| Keyword search (4,163 papers available) |  |
"Wu J" Authored Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | Parametric instability in discrete models of spatiotemporally modulated materials | Wu J; Yousefzadeh B; | 41250313 ENCS |
| 2 | Developmental exposure to the physical and social world and responses to risk among college students from four cultural contexts | Chentsova-Dutton Y; Gürcan-Yildirim D; Wu J; Zakharov I; Ryder AG; | 40147255 CONCORDIA |
| 3 | Linear nonreciprocal dynamics of coupled modulated systemsa) | Wu J; Yousefzadeh B; | 39976602 ENCS |
| 4 | Modeling and tracking control of dielectric elastomer actuators based on fractional calculus | Wu J; Xu Z; Zhang Y; Su CY; Wang Y; | 36792481 ENCS |
| Title: | Linear nonreciprocal dynamics of coupled modulated systemsa) | ||||
| Authors: | Wu J, Yousefzadeh B | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/39976602/ | ||||
| DOI: | 10.1121/10.0035882 | ||||
| Publication: | The Journal of the Acoustical Society of America | ||||
| Keywords: | |||||
| PMID: | 39976602 | Category: | Date Added: | 2025-02-20 | |
| Dept Affiliation: |
ENCS
1 Department of Mechanical Industrial and Aerospace Engineering, Concordia University, Montreal, Quebec, Canada. |
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Description: |
Waveguides subject to spatiotemporal modulations are known to exhibit nonreciprocal vibration transmission, whereby interchanging the locations of the source and receiver changes the end-to-end transmission characteristics. The scenario of typical interest is unidirectional transmission in long, weakly modulated systems: when transmission is possible in one direction only. Here, with a view toward expanding their potential application as devices, we explore the vibration characteristics of spatiotemporally modulated systems that are short and strongly modulated. Focusing on two coupled systems, we develop a methodology to investigate the nonreciprocal vibration characteristics of both weakly and strongly modulated systems. In particular, we highlight the contribution of phase to nonreciprocity, a feature that is often overlooked. We show that the difference between the transmitted phases is the main contributor to breaking reciprocity in short systems. We clarify the roles of primary and sideband resonances, and their overlaps, in breaking reciprocity. We discuss the influence of modulation amplitude and wavenumber on the resonances of the modulated system. We hope this work brings more attention to the dynamics of strongly modulated systems. |
