Shendy, Mohamed, Maftoon, Nima et Salehian, Armaghan.
2025.
« The existence of truncation resonance in TPMS-based periodic acoustic metamaterials ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
Truncation resonance represents peaks that manifest within the bandgap frequency range of periodic metamaterials. This phenomenon stands in contrast to the general conclusion regarding the absence of peaks within bandgap frequency ranges. Truncation resonance is attributed to finite periodic metamaterials, whereas bandgaps pertain to infinite periodic metamaterials. The present study examined the occurrence of truncation resonance in one-dimensional periodic metamaterials constructed from repeated primitive unit cells, observed within the acoustic spectrum. The investigation was geometric-based, considering 10 periodic metamaterials with different relative densities and number of repeated unit cells. This investigation employed both bandgap data and modal analysis, wherein natural frequencies, modeshapes, and Acoustic Pressure Responses (APRs) were integral components of the modal analysis. Following an analysis of APRs, the study was further inspired to scrutinize the numerator of the modal-solved APR. Through analyzing the APR numerator, this work demonstrated the coexistence of truncation resonance and bandgaps in periodic metamaterials.
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:32 |
| Dernière modification: | 18 déc. 2025 15:32 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32502 |
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