Stochastic sensitivity analysis of a panel speaker structure with a locally resonant material

J. Kim; J. Jung; I. Lee

Stochastic sensitivity analysis of a panel speaker structure with a locally resonant material

J. Kim^*, J. Jung^*, I. Lee^*

^*Corresponding author for this work

Korea Advanced Institute of Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

A design optimization based on topology optimization was recently applied to a panel speaker structure to create band gaps using locally resonant metamaterials (LRMs). However, under practical environment, deterministically optimized designs cannot always perform as expected. This undesirable phenomenon occurs due to uncertainties such as variations of material properties or misplacement of resonators. The uncertainties should be considered during the optimization process to obtain reliable designs. To tackle the probabilistic problem in the design optimization under uncertainties, a stochastic sensitivity analysis must be preceded. This study aims to investigate the effects of uncertainties and analyze sensitivities of uncertainties concerning the performance of an LRM for further optimization.

Original language	English
Title of host publication	Proceedings of 2020 International Congress on Noise Control Engineering (INTER-NOISE 2020)
Editors	Jin Yong Jeon
Publisher	Korean Society of Noise and Vibration Engineering
Publication date	2020
ISBN (Electronic)	978-899402136-2
Publication status	Published - 2020
Event	49^th International Congress and Exposition on Noise Control Engineering - Virtual event, Seoul, Korea, Republic of Duration: 23 Aug 2020 → 26 Aug 2020 https://internoise2020.org/

Conference

Conference	49^th International Congress and Exposition on Noise Control Engineering
Location	Virtual event
Country/Territory	Korea, Republic of
City	Seoul
Period	23/08/2020 → 26/08/2020
Internet address	https://internoise2020.org/

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title = "Stochastic sensitivity analysis of a panel speaker structure with a locally resonant material",

abstract = "A design optimization based on topology optimization was recently applied to a panel speaker structure to create band gaps using locally resonant metamaterials (LRMs). However, under practical environment, deterministically optimized designs cannot always perform as expected. This undesirable phenomenon occurs due to uncertainties such as variations of material properties or misplacement of resonators. The uncertainties should be considered during the optimization process to obtain reliable designs. To tackle the probabilistic problem in the design optimization under uncertainties, a stochastic sensitivity analysis must be preceded. This study aims to investigate the effects of uncertainties and analyze sensitivities of uncertainties concerning the performance of an LRM for further optimization.",

author = "J. Kim and J. Jung and I. Lee",

year = "2020",

language = "English",

editor = "Jeon, {Jin Yong}",

booktitle = "Proceedings of 2020 International Congress on Noise Control Engineering (INTER-NOISE 2020)",

publisher = "Korean Society of Noise and Vibration Engineering",

note = "49<sup>th</sup> International Congress and Exposition on Noise Control Engineering, Inter-Noise 2020 ; Conference date: 23-08-2020 Through 26-08-2020",

url = "https://internoise2020.org/",

}

Kim, J, Jung, J & Lee, I 2020, Stochastic sensitivity analysis of a panel speaker structure with a locally resonant material. in JY Jeon (ed.), Proceedings of 2020 International Congress on Noise Control Engineering (INTER-NOISE 2020). Korean Society of Noise and Vibration Engineering, 49^th International Congress and Exposition on Noise Control Engineering, Seoul, Korea, Republic of, 23/08/2020.

Stochastic sensitivity analysis of a panel speaker structure with a locally resonant material. / Kim, J.; Jung, J.; Lee, I.

Proceedings of 2020 International Congress on Noise Control Engineering (INTER-NOISE 2020). ed. / Jin Yong Jeon. Korean Society of Noise and Vibration Engineering, 2020.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Stochastic sensitivity analysis of a panel speaker structure with a locally resonant material

AU - Kim, J.

AU - Jung, J.

AU - Lee, I.

PY - 2020

Y1 - 2020

N2 - A design optimization based on topology optimization was recently applied to a panel speaker structure to create band gaps using locally resonant metamaterials (LRMs). However, under practical environment, deterministically optimized designs cannot always perform as expected. This undesirable phenomenon occurs due to uncertainties such as variations of material properties or misplacement of resonators. The uncertainties should be considered during the optimization process to obtain reliable designs. To tackle the probabilistic problem in the design optimization under uncertainties, a stochastic sensitivity analysis must be preceded. This study aims to investigate the effects of uncertainties and analyze sensitivities of uncertainties concerning the performance of an LRM for further optimization.

AB - A design optimization based on topology optimization was recently applied to a panel speaker structure to create band gaps using locally resonant metamaterials (LRMs). However, under practical environment, deterministically optimized designs cannot always perform as expected. This undesirable phenomenon occurs due to uncertainties such as variations of material properties or misplacement of resonators. The uncertainties should be considered during the optimization process to obtain reliable designs. To tackle the probabilistic problem in the design optimization under uncertainties, a stochastic sensitivity analysis must be preceded. This study aims to investigate the effects of uncertainties and analyze sensitivities of uncertainties concerning the performance of an LRM for further optimization.

M3 - Article in proceedings

AN - SCOPUS:85101323588

BT - Proceedings of 2020 International Congress on Noise Control Engineering (INTER-NOISE 2020)

A2 - Jeon, Jin Yong

PB - Korean Society of Noise and Vibration Engineering

T2 - 49<sup>th</sup> International Congress and Exposition on Noise Control Engineering

Y2 - 23 August 2020 through 26 August 2020

ER -

Stochastic sensitivity analysis of a panel speaker structure with a locally resonant material

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