A fast numerical model for vehicle interior acoustics

Eric J. Sorosiak, Mingfeng Li, Teik C. Lim, Takeshi Abe, Ming Ran Lee, Ming Te Cheng, Wayne Vanhaaften

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Vehicle noise, vibration and harshness (NVH) problems can be analyzed using numerical methods such as finite element analysis, which is generally complex and time consuming. In order to speed the analysis and reduce the calculation burden, this paper discusses the development, use and verification of an enhanced, simplified numerical acoustic cavity modeling approach for the analysis of vehicle NVH problems. The proposed simplified vehicle model can incorporate multiple acoustic cavities, such as an engine compartment, passenger compartment, and connecting bulkhead compartment, joined by several flexible panels. The damping matrix of the model is constructed from measured acoustic absorption data and panel properties. Utilizing this modeling approach, both single-cavity and three-cavity models are created, different floor panel configurations are investigated, and transfer functions predicted by these models are compared with corresponding transfer functions from measured data. More specifically, airborne noise created by the structure-borne road noise vibrations introduced into the passenger compartment floor is observed from the perspective of the vehicle occupants. The transfer functions representing the road noise transmission path are determined experimentally and compared with model prediction results. The comparison results imply that the developed simplified model provides reasonable accuracy for the analysis and simulation study.

Original languageEnglish (US)
Title of host publicationInstitute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
Pages1467-1476
Number of pages10
StatePublished - 2008
Externally publishedYes
Event23rd National Conference on Noise Control Engineering, NOISE-CON 2008 and 3rd Sound Quality Symposium, SQS 2008 - Dearborn, MI, United States
Duration: Jul 28 2008Jul 31 2008

Publication series

NameInstitute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
Volume3

Conference

Conference23rd National Conference on Noise Control Engineering, NOISE-CON 2008 and 3rd Sound Quality Symposium, SQS 2008
Country/TerritoryUnited States
CityDearborn, MI
Period7/28/087/31/08

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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