Acoustical topology optimization for Zwicker's loudness model - Application to noise barriers

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Acoustical topology optimization for Zwicker's loudness model - Application to noise barriers. / Kook, Junghwan; Koo, Kunmo; Hyun, Jaeyub; Jensen, Jakob Søndergaard; Wang, Semyung.

In: Computer Methods in Applied Mechanics and Engineering, Vol. 237-240, 2012, p. 130-151.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Kook, Junghwan; Koo, Kunmo; Hyun, Jaeyub; Jensen, Jakob Søndergaard; Wang, Semyung / Acoustical topology optimization for Zwicker's loudness model - Application to noise barriers.

In: Computer Methods in Applied Mechanics and Engineering, Vol. 237-240, 2012, p. 130-151.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{a959d9a5308742efb1a41ca7d66e6e94,
title = "Acoustical topology optimization for Zwicker's loudness model - Application to noise barriers",
keywords = "Topology optimization, Zwicker’s loudness, Main specific loudness, Noise barriers, 1/3-Octave band",
publisher = "Elsevier BV",
author = "Junghwan Kook and Kunmo Koo and Jaeyub Hyun and Jensen, {Jakob Søndergaard} and Semyung Wang",
year = "2012",
doi = "10.1016/j.cma.2012.05.004",
volume = "237-240",
pages = "130--151",
journal = "Computer Methods in Applied Mechanics and Engineering",
issn = "0045-7825",

}

RIS

TY - JOUR

T1 - Acoustical topology optimization for Zwicker's loudness model - Application to noise barriers

A1 - Kook,Junghwan

A1 - Koo,Kunmo

A1 - Hyun,Jaeyub

A1 - Jensen,Jakob Søndergaard

A1 - Wang,Semyung

AU - Kook,Junghwan

AU - Koo,Kunmo

AU - Hyun,Jaeyub

AU - Jensen,Jakob Søndergaard

AU - Wang,Semyung

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - Traditionally, the objective of design optimization of an acoustic system is to reduce physical acoustic properties, i.e., sound pressure and power. However, since these parameters are not sufficient to present the relation of physical sound stimulus with human perceptual judgment, physical acoustic properties may not represent adequate parameters for optimizing acoustic devices. In this paper, we first present a design method for acoustical topology optimization by considering human's subjective conception of sound. To consider human hearing characteristics. Zwicker's loudness is calculated according to DIN45631 (ISO 532B). The main objective of this work is to minimize the main specific loudness of a target critical band rate by optimizing the distribution of the reflecting material in a design domain. The Helmholtz equation is used to model acoustic wave propagation and, it is solved using the finite element method. The sensitivity of the main specific loudness is calculated using the adjoint variable method and the chain rule. To demonstrate the effectiveness of the proposed method, various examples of noise barriers are presented with different source and receiver locations. The results obtained, using the optimized noise barriers that consider Zwicker's loudness, are compared with the results for straight and T-shaped barriers. The results are also compared with topology optimization using 1/3-octave band level as an objective function. The optimized noise barrier using the proposed method shows the best result with respect to a human's hearing sensation. (c) 2012 Elsevier B.V. All rights reserved.

AB - Traditionally, the objective of design optimization of an acoustic system is to reduce physical acoustic properties, i.e., sound pressure and power. However, since these parameters are not sufficient to present the relation of physical sound stimulus with human perceptual judgment, physical acoustic properties may not represent adequate parameters for optimizing acoustic devices. In this paper, we first present a design method for acoustical topology optimization by considering human's subjective conception of sound. To consider human hearing characteristics. Zwicker's loudness is calculated according to DIN45631 (ISO 532B). The main objective of this work is to minimize the main specific loudness of a target critical band rate by optimizing the distribution of the reflecting material in a design domain. The Helmholtz equation is used to model acoustic wave propagation and, it is solved using the finite element method. The sensitivity of the main specific loudness is calculated using the adjoint variable method and the chain rule. To demonstrate the effectiveness of the proposed method, various examples of noise barriers are presented with different source and receiver locations. The results obtained, using the optimized noise barriers that consider Zwicker's loudness, are compared with the results for straight and T-shaped barriers. The results are also compared with topology optimization using 1/3-octave band level as an objective function. The optimized noise barrier using the proposed method shows the best result with respect to a human's hearing sensation. (c) 2012 Elsevier B.V. All rights reserved.

KW - Topology optimization

KW - Zwicker’s loudness

KW - Main specific loudness

KW - Noise barriers

KW - 1/3-Octave band

U2 - 10.1016/j.cma.2012.05.004

DO - 10.1016/j.cma.2012.05.004

JO - Computer Methods in Applied Mechanics and Engineering

JF - Computer Methods in Applied Mechanics and Engineering

SN - 0045-7825

VL - 237-240

SP - 130

EP - 151

ER -