期刊論文

標題 Analysis of mode shapes of a rigidly backed cylindrical foam using three-dimensional finite element acoustical analysis
學年 97
學期 1
出版(發表)日期 2008/09/01
作品名稱 Analysis of mode shapes of a rigidly backed cylindrical foam using three-dimensional finite element acoustical analysis
作品名稱(其他語言)
著者 Tsay, Huoy-Shyi; Yeh, Fung-Huei
單位 淡江大學機械與機電工程學系
出版者 Oxford: Pergamon
著錄名稱、卷期、頁數 Applied Acoustics 69(9), pp.778-788
摘要 In this study, the three-dimensional finite element frequency domain acoustical analysis is used to determine the modal shapes of cylindrical foam with a rigid backing and subjected to a unit normal incidence impulsive sound pressure loading while placed in the impedance tube. The acoustic results predicted for the foam are validated by data from the two-microphone acoustic measurements, and good agreement between the measured and predicted acoustic results is observed. The mode shapes of the incident face of the foam at a low frequency, resonant and anti-resonant frequencies as well as the frequency that occurring the peak loss modulus are illustrated. It is found that the modal behaviors of the cylindrical foam are dominated by the fluid, although the acoustic properties of the cylindrical foam are also influenced by the circumferential edge constraints and the modal movements of the solid skeleton.
關鍵字 Mode shape; Polyurethane foam; Finite element analysis; Frequency domain
語言 英文
ISSN 0003-682X
期刊性質 國外
收錄於 SCI;EI
產學合作
通訊作者 Tsay, Huoy-Sshyi
審稿制度
國別 英國
公開徵稿
出版型式 紙本