Volume 11, Issue 2 (6-2021)                   ASE 2021, 11(2): 3626-3636 | Back to browse issues page

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Tabatabaei S H, Moradi Haghighi S, Kiani A, Ghasemian K. A New Optimized Sound Package for the Vehicle Dash Panel. ASE 2021; 11 (2) :3626-3636
URL: http://www.iust.ac.ir/ijae/article-1-528-en.html
A New Optimized Sound Package for the Vehicle Dash Panel
Seyyed Hamed Tabatabaei , Saeed Moradi Haghighi , AmirHossein Kiani , Kasra Ghasemian
Mechanical Engineering Department, South Tehran Branch of Islamic Azad University, Tehran, Iran
Abstract:   (8234 Views)
In this paper, an optimized insulator for sound packaging of the vehicle dash panel is proposed. The combination of the micro perforated panel and porous layers has been selected to insulate the dash panel of a vehicle.  The main advantages of the mentioned combination are light weight and various tunable parameters in comparison with other insulators. These provide significant flexibility to achieve an optimal performance for the noise attenuation of the vehicle cabin. Therefore, the parameters of the selected sound package have been optimized in order to achieve suitable sound absorption in a selected frequency range. Furthermore, the Genetic Algorithm (GA) is used to optimize the parameters. It can achieve more reliable and more accurate outcomes compared to the conventional method.  Full vehicle SEA (Statistical Energy Analysis) simulations are used to evaluate the optimized sound package. The results indicate that the optimized concept has maximum sound absorption capability.  Consequently, the proposed sound package improves the vehicle's engine noise reduction by 5 dB in comparison with un-optimized sample in mid and high frequency ranges.
Keywords: Sound Package, NVH, Optimization, Vehicle, Genetic Algorithm
Full-Text [PDF 845 kb]   (6055 Downloads)    
Type of Study: Research | Subject: Vibration, noise, Acoustic
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