@inproceedings{oai:jaxa.repo.nii.ac.jp:00005416, author = {村上, 桂一 and 青山, 剛史 and Murakami, Keiichi and Aoyama, Takashi}, book = {宇宙航空研究開発機構特別資料: 第40回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2008論文集, JAXA Special Publication: Proceedings fo 40th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2008}, month = {Feb}, note = {第40回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2008. 会期: 2008年6月12日-6月13日. 会場: 東北大学片平キャンパス, This paper provides the results of a numerical analysis on sound transmission loss of a thin aluminum plate. The finite difference time domain (FDTD) method is used in this study because it simultaneously solves both sound wave propagation in fluid and elastic wave propagation in solid. The calculated value of sound transmission loss gives good agreement with that of mass law. Sound transmission of saw-shaped wave approximated by the sum of sine waves is also calculated. As a result, it is considered that even if a non-linear sound wave reaches to a thin plate, its high frequency components are reduced and the transmitted wave can be treated as a linear wave under the condition which an incident plane wave transmits to infinitely large thin plate., 形態: カラー図版あり, 資料番号: AA0064303014, レポート番号: JAXA-SP-08-009}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {FDTD法による音響透過損失の数値解析}, volume = {JAXA-SP-08-009}, year = {2009} }