The Application of SEA in Automobile Dash Sound Transmission Loss Numerical Calculation

In order to study the structure-borne sound radiation, statistical energy analysis (SEA) was adopted and an automobile dash was divided into 31 subsystems; the modal density, damping loss factor (DLF) and coupling loss factor (CLF) were acquired, which were the basic parameters of SEA; then dash tra...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 152-154; pp. 894 - 899
Main Authors Mao, Jie, Hao, Zhi Yong, Yang, Ji, Chen, Xin Rui
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.01.2012
Subjects
TL
Dash
Magnesium Alloy
MHF
SEA
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Summary:In order to study the structure-borne sound radiation, statistical energy analysis (SEA) was adopted and an automobile dash was divided into 31 subsystems; the modal density, damping loss factor (DLF) and coupling loss factor (CLF) were acquired, which were the basic parameters of SEA; then dash transmission loss (TL) at the middle and high frequency (MHF) ranging from 100 Hz to 10k Hz was calculated. The most outstanding advantage of SEA was that calculation could be fast done, which was more convenient than FEM (Finite Element Method) and BEM (Boundary Element Method). Finally, a TL experiment was designed to verify the feasibility and reliability of numerical calculation. The 1/3 octave TL curves of the simulation and experiment show a good consistency and the error is engineering permitted, which means SEA simulation possesses high credibility and can guide the engineering research.
Bibliography:Selected, peer reviewed papers from the 2012 International Conference on Mechanical Engineering and Materials (ICMEM 2012), January 15-16, 2012, Melbourne, Australia
ISBN:9783037853528
3037853522
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.152-154.894