Research on the influence of airflow resistance of layered porous structures on the sound absorption coefficient

• Autorzy: Flach Artur

Identyfikatory

DOI

10.21008/j.0860-6897.2022.3.11

• Języki publikacji: EN

Abstrakty

EN

The paper presents the research on the influence of airflow resistance on the sound absorption coefficient of layered porous structures. For the calculation of the sound absorption coefficient, the models of layered sound-absorbing structures were developed with the use of numerical computational models. Using the developed models, optimization was carried out to maximize the average sound absorption coefficient of the structures for a given frequency range. As a result of the research, the dependence of the change in airflow resistance for the successive layers of the material was determined. The results of the work will be particularly useful in the design of wedges used in anechoic chambers.

Słowa kluczowe

EN

airflow resistance; anechoic wedges; transfer matrix method; optimization; PSO; particle swarm optimization

PL

opór przepływu powietrza; kliny akustyczne; metoda macierzy przejścia; optymalizacja; PSO; optymalizacja roju cząstek

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2022
• Tom: Vol. 33, nr 3
• Strony: art. no. 2022311
• Opis fizyczny: Bibliogr. 6 poz., fot. kolor., 1 rys., wykr.

Twórcy

autor

Flach Artur

• AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland

• https://orcid.org/0000-0002-5439-2551

Bibliografia

• 1. M. E. Delany, E. N. Bazley; Acoustical properties of fibrous absorbent materials; Applied Acoustics 1970, 3, 105-116.
• 2. Y. Miki; Acoustical properties of porous materials - modifications of Delany-Bazley models; J. Acoust. Soc. Jpn. (E) 1990, 11(1), 19-24.
• 3. J. Kennedy, R. Eberhart; Particle Swarm Optimization; International Conference on Neural Networks, Perth, Australia, November 27 - December 1, 1995. DOI: 10.1109/ICNN.1995.488968
• 4. EN ISO 10534-2, 2003 Acoustics, Determination of sound absorption coefficient and impedance in impedance tubes, Part 2: Transfer-function method, 2003.
• 5. PN-EN ISO 9053-1, 2019 Acoustics - Determination of airflow resistance - Part 1: Static airflow method, 2019.
• 6. M.L. Munjal; Acoustics of Ducts and Mufflers, 2nd ed.; Wiley: Chichester, USA, 2014.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).