Attenuation of Vehicle Noise using Different Trunk Insulation Systems

2009-01-2122

05/19/2009

Event
SAE 2009 Noise and Vibration Conference and Exhibition
Authors Abstract
Content
Attenuation of noise from the rear of a vehicle was evaluated for different trunk insulation systems using a combination of poro-elastic material modeling and a full vehicle SEA model. The model considered the interaction between the trunk and the passenger cabin. The sound absorption coefficients and acoustic impedance for each of the material systems used in the trunk were measured and the poro-elastic Biot properties were calculated to define the acoustic treatments in the SEA model. Several levels of acoustical treatment for the trunk were studied ranging from a trunk with no decorative liner to a trunk with a liner and maximum acoustical treatment. The results show the contribution of the trunk material in reducing cabin noise for different levels of noise originating at the rear of the vehicle. These results demonstrate the value of combining poro-elastic material modeling and SEA models for selecting efficient material systems early in a vehicle design. They also highlight vehicle designs that require acoustically tuned trunk material to prevent compromises in the overall NVH performance.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-2122
Pages
7
Citation
Wyerman, B., and Connelly, T., "Attenuation of Vehicle Noise using Different Trunk Insulation Systems," SAE Technical Paper 2009-01-2122, 2009, https://doi.org/10.4271/2009-01-2122.
Additional Details
Publisher
Published
May 19, 2009
Product Code
2009-01-2122
Content Type
Technical Paper
Language
English