Sound absorption structure optimization based on material absorption models and noise rating curves

Author

Sifa, Zheng ; Binxing, Wang ; Peng, Hao ; Xiaomin, Lian ; Keqiang, Li

Author_Institution

State key Lab. of Automotive Safety & Energy, Tsinghua Univ., Beijing, China

fYear

2010

fDate

26-28 June 2010

Firstpage

2551

Lastpage

2554

Abstract

The sound absorption materials are more and more widely used in vehicles. An novel optimal design method is proposed in this paper, which mainly includes two steps: (i) the determination of expected absorbing curve based on noise reduction goal and noise rating curve; (ii) choice of absorption materials and optimization of the material thickness based on the sound absorption model. The method has been applied to the absorption performance improvement of some vehicle´s engine cabin and the results prove to be satisfactory. The absorption coefficients have been improved by 0.2 in the frequency range of 0-1200Hz.

Keywords

acoustic wave absorption; design engineering; noise abatement; vehicle dynamics; absorbing curve; absorption coefficients; material absorption model; material thickness; noise rating curves; noise reduction goal; optimal design; sound absorption structure optimization; vehicle engine cabin; Absorption; Acoustic materials; Acoustic noise; Automotive engineering; Design methodology; Design optimization; Engines; Frequency; Noise reduction; Vehicle safety; noise rating curve; optimal design; sound absorption materials; sound absorption model;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-7737-1

Type

conf

DOI

10.1109/MACE.2010.5536426

Filename

5536426