Statistical Energy Analysis of Airborne and Structure-Borne Automobile Interior Noise

971970

05/20/1997

Event
SAE Noise and Vibration Conference and Exposition
Authors Abstract
Content
This paper describes the application of Statistical Energy Analysis (SEA) and Experimental SEA (ESEA) to calculating the transmission of air-borne and structure-borne noise in a mid-sized sedan. SEA can be applied rapidly in the early stages of vehicle design where the degree of geometric detail is relatively low. It is well suited to the analysis of multiple paths of vibrational energy flow from multiple sources into the passenger compartment at mid to high frequencies. However, the application of SEA is made difficult by the geometry of the vehicle's subsystems and joints. Experience with current unibody vehicles leads to distinct modeling strategies for the various frequency ranges in which airborne or structure-borne noise predominates. The theory and application of ESEA to structure-borne noise is discussed. ESEA yields loss factors and input powers which are combined with an analytical SEA model to yield a single hybrid model. Results from model validation and correlation with measured data are presented.
Meta TagsDetails
DOI
https://doi.org/10.4271/971970
Pages
10
Citation
Parrett, A., Hicks, J., Burton, T., and Hermans, L., "Statistical Energy Analysis of Airborne and Structure-Borne Automobile Interior Noise," SAE Technical Paper 971970, 1997, https://doi.org/10.4271/971970.
Additional Details
Publisher
Published
May 20, 1997
Product Code
971970
Content Type
Technical Paper
Language
English