Noise reduction using the concept of acoustic black holes designed based on modal analysis

Bjørnar Saurdal; Daniel Villadsen; Sergey V. Sorokin; Lasse S. Ledet

Noise reduction using the concept of acoustic black holes designed based on modal analysis

Bjørnar Saurdal, Daniel Villadsen, Sergey V. Sorokin, Lasse S. Ledet

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

Abstract

The classical theory of acoustic black holes (ABHs) is quite complex with its application being limited to simple plates and beams. The aim of this paper is to promote ABHs for the community of engineers well familiar with finite element analysis (FEA). Firstly, a validation of FEA as a tool to analyze and design ABHs is done by conventional FE studies replicating experiments, which have already been conducted. Then the concept of modal analysis-based design of ABH is proposed and verified by means of harmonic analysis (both using standard ANSYS software). As the damping layer is an essential part of any real fabricated products utilizing the ABH effect, the influence of its size and thickness are studied by the means of FEM and compared to what has been found in earlier experiments.

Original language	English
Title of host publication	EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings : Volume II
Editors	Manolis Papadrakakis, Michalis Fragiadakis, Costas Papadimitriou
Number of pages	8
Publisher	Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA)
Publication date	2020
Pages	2489-2496
ISBN (Electronic)	978-618850721-0
Publication status	Published - 2020
Event	11th International Conference on Structural Dynamics, EURODYN 2020 - Virtual, Athens, Greece Duration: 23 Nov 2020 → 26 Nov 2020

Conference

Conference	11th International Conference on Structural Dynamics, EURODYN 2020
Country/Territory	Greece
City	Virtual, Athens
Period	23/11/2020 → 26/11/2020

Series	Proceedings of the International Conference on Structural Dynamic , EURODYN
Volume	2
ISSN	2311-9020

Bibliographical note

Publisher Copyright:
© 2020 European Association for Structural Dynamics. All rights reserved.

Keywords

Acoustic Black Holes
Eigenmodes
Modal Analysis
Noise
Vibrations

Access to Document

https://generalconferencefiles.s3-eu-west-1.amazonaws.com/eurodyn_2020_ebook_procedings_vol2.pdf

AUB Link

Search for the material in Aalborg University Library's search engine

Cite this

Saurdal, B., Villadsen, D., Sorokin, S. V., & Ledet, L. S. (2020). Noise reduction using the concept of acoustic black holes designed based on modal analysis. In M. Papadrakakis, M. Fragiadakis, & C. Papadimitriou (Eds.), EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings: Volume II (pp. 2489-2496). Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA). https://generalconferencefiles.s3-eu-west-1.amazonaws.com/eurodyn_2020_ebook_procedings_vol2.pdf

Saurdal, Bjørnar ; Villadsen, Daniel ; Sorokin, Sergey V. et al. / Noise reduction using the concept of acoustic black holes designed based on modal analysis. EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings: Volume II. editor / Manolis Papadrakakis ; Michalis Fragiadakis ; Costas Papadimitriou. Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA), 2020. pp. 2489-2496 (Proceedings of the International Conference on Structural Dynamic , EURODYN, Vol. 2).

@inproceedings{c67a871da2314c26bc3e98637ddea07b,

title = "Noise reduction using the concept of acoustic black holes designed based on modal analysis",

abstract = "The classical theory of acoustic black holes (ABHs) is quite complex with its application being limited to simple plates and beams. The aim of this paper is to promote ABHs for the community of engineers well familiar with finite element analysis (FEA). Firstly, a validation of FEA as a tool to analyze and design ABHs is done by conventional FE studies replicating experiments, which have already been conducted. Then the concept of modal analysis-based design of ABH is proposed and verified by means of harmonic analysis (both using standard ANSYS software). As the damping layer is an essential part of any real fabricated products utilizing the ABH effect, the influence of its size and thickness are studied by the means of FEM and compared to what has been found in earlier experiments.",

keywords = "Acoustic Black Holes, Eigenmodes, Modal Analysis, Noise, Vibrations",

author = "Bj{\o}rnar Saurdal and Daniel Villadsen and Sorokin, {Sergey V.} and Ledet, {Lasse S.}",

note = "Publisher Copyright: {\textcopyright} 2020 European Association for Structural Dynamics. All rights reserved.; 11th International Conference on Structural Dynamics, EURODYN 2020 ; Conference date: 23-11-2020 Through 26-11-2020",

year = "2020",

language = "English",

series = "Proceedings of the International Conference on Structural Dynamic , EURODYN",

publisher = "Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA)",

pages = "2489--2496",

editor = "Manolis Papadrakakis and Michalis Fragiadakis and Costas Papadimitriou",

booktitle = "EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings",

}

Saurdal, B, Villadsen, D, Sorokin, SV & Ledet, LS 2020, Noise reduction using the concept of acoustic black holes designed based on modal analysis. in M Papadrakakis, M Fragiadakis & C Papadimitriou (eds), EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings: Volume II. Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA), Proceedings of the International Conference on Structural Dynamic , EURODYN, vol. 2, pp. 2489-2496, 11th International Conference on Structural Dynamics, EURODYN 2020, Virtual, Athens, Greece, 23/11/2020. <https://generalconferencefiles.s3-eu-west-1.amazonaws.com/eurodyn_2020_ebook_procedings_vol2.pdf>

Noise reduction using the concept of acoustic black holes designed based on modal analysis. / Saurdal, Bjørnar; Villadsen, Daniel; Sorokin, Sergey V. et al.
EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings: Volume II. ed. / Manolis Papadrakakis; Michalis Fragiadakis; Costas Papadimitriou. Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA), 2020. p. 2489-2496 (Proceedings of the International Conference on Structural Dynamic , EURODYN, Vol. 2).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Noise reduction using the concept of acoustic black holes designed based on modal analysis

AU - Saurdal, Bjørnar

AU - Villadsen, Daniel

AU - Sorokin, Sergey V.

AU - Ledet, Lasse S.

PY - 2020

Y1 - 2020

N2 - The classical theory of acoustic black holes (ABHs) is quite complex with its application being limited to simple plates and beams. The aim of this paper is to promote ABHs for the community of engineers well familiar with finite element analysis (FEA). Firstly, a validation of FEA as a tool to analyze and design ABHs is done by conventional FE studies replicating experiments, which have already been conducted. Then the concept of modal analysis-based design of ABH is proposed and verified by means of harmonic analysis (both using standard ANSYS software). As the damping layer is an essential part of any real fabricated products utilizing the ABH effect, the influence of its size and thickness are studied by the means of FEM and compared to what has been found in earlier experiments.

AB - The classical theory of acoustic black holes (ABHs) is quite complex with its application being limited to simple plates and beams. The aim of this paper is to promote ABHs for the community of engineers well familiar with finite element analysis (FEA). Firstly, a validation of FEA as a tool to analyze and design ABHs is done by conventional FE studies replicating experiments, which have already been conducted. Then the concept of modal analysis-based design of ABH is proposed and verified by means of harmonic analysis (both using standard ANSYS software). As the damping layer is an essential part of any real fabricated products utilizing the ABH effect, the influence of its size and thickness are studied by the means of FEM and compared to what has been found in earlier experiments.

KW - Acoustic Black Holes

KW - Eigenmodes

KW - Modal Analysis

KW - Noise

KW - Vibrations

UR - http://www.scopus.com/inward/record.url?scp=85098741192&partnerID=8YFLogxK

M3 - Article in proceeding

AN - SCOPUS:85098741192

T3 - Proceedings of the International Conference on Structural Dynamic , EURODYN

SP - 2489

EP - 2496

BT - EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings

A2 - Papadrakakis, Manolis

A2 - Fragiadakis, Michalis

A2 - Papadimitriou, Costas

PB - Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA)

T2 - 11th International Conference on Structural Dynamics, EURODYN 2020

Y2 - 23 November 2020 through 26 November 2020

ER -

Saurdal B, Villadsen D, Sorokin SV, Ledet LS. Noise reduction using the concept of acoustic black holes designed based on modal analysis. In Papadrakakis M, Fragiadakis M, Papadimitriou C, editors, EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings: Volume II. Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA). 2020. p. 2489-2496. (Proceedings of the International Conference on Structural Dynamic , EURODYN, Vol. 2).

Noise reduction using the concept of acoustic black holes designed based on modal analysis

Abstract

Conference

Bibliographical note

Keywords

Access to Document

AUB Link

Other files and links

Fingerprint

Cite this