Two-dimensional acoustic analysis by concentrated mass model

Satoshi Ishikawa, Shinya Kijimoto, Yosuke Koba, Ryoma Owaki, Yuuki Mori

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

FDTD method and CIP method are used for an acoustic analysis in time domain. However, these methods do not take into account a sound attenuation from viscosity. In our study, we propose a concentrated mass model which consists of spring-mass-damper system to perform a two-dimensional acoustic analysis. The dampers of this model consider viscosity of air. In this paper, we derive mass, connecting springs, connecting dampers, and base support dampers. The characteristic of the connecting spring is derived from the condition of adiabatic change of air, and the connecting damper is derived from the normal stress. To confirm the validity of the proposed model, the numerical results obtained by the concentrated mass model are compared with the theoretical value of the traveling wave, and with the theoretical value of the natural frequency. All numerical computational results agree very well with the theoretical values. Therefore, it is concluded that the proposed model is valid for the two-dimensional acoustic analysis.

本文言語英語
ホスト出版物のタイトル42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013
ホスト出版物のサブタイトルNoise Control for Quality of Life
出版社OAL-Osterreichischer Arbeitsring fur Larmbekampfung
ページ3319-3326
ページ数8
ISBN(印刷版)9781632662675
出版ステータス出版済み - 1 1 2013
イベント42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013 - Innsbruck, オーストリア
継続期間: 9 15 20139 18 2013

出版物シリーズ

名前42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life
4

その他

その他42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013
Countryオーストリア
CityInnsbruck
Period9/15/139/18/13

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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