Original Research ARTICLE
Between science and art: thin sound absorbers inspired by Slavic ornaments
- 1Department of Civil, Environmental and Mechanical Engineering, University of Trento, Italy
Acoustic metamaterials have opened promising opportunities for manipulation of low-frequency sound and development of compact structures with a broadband acoustic performance for noise mitigation applications, room, and architectural acoustics. So far, several mechanisms have been studied to achieve broadband sound absorption at subwavelength frequencies, when the system thickness is much smaller than the wavelength of sound waves. In this paper, we analyze two other approaches based on the use of interacting and coupled resonators with the aim to further reduce a structural thickness. We numerically demonstrate that properly designed panels with interacting resonators allow extending a single-peak absorption to broadband frequencies, while coupled resonators enable achieving broadband absorption at several frequency ranges. The developed designs are inspired by ancient Slavic folk patterns, attracting attention by their delicate ligature, multi-layered structure, and concealed meaning. Our results open new possibilities for creating acoustic metamaterials with art effects, which provide meaning to occupied space and make these metamaterials more appealing for applications.
Keywords: Slavic ornament, dispersion, sound absorption, Helmholtz resonator, acoustic metamaterial, wave dynamics
Received: 27 Nov 2018;
Accepted: 10 Jul 2019.
Edited by:Asa Barber, London South Bank University, United Kingdom
Reviewed by:Ettore Barbieri, Japan Agency for Marine-Earth Science and Technology, Japan
Domenico De Tommasi, Politecnico di Bari, Italy
Copyright: © 2019 Krushynska. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Dr. Anastasiia O. Krushynska, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy, email@example.com