A Comparison of Test-Based and Analytic SEA Models for Vibro-Acoustics of a Light Truck 951329
A number of researchers [3],[4] have shown that Statistical Energy Analysis[1] provides a useful framework for test-based noise path analysis - as well purely analytical models. This paper describes the results of a comparative study of two such models - an analytic SEA model and a test-based SEA parameter model - for predicting the Noise Reduction performance of a light truck body.
First, the different power balance matrix solutions and SEA subsystem definitions are reviewed. Second the results of the two independent models are compared. For some specific cases of structure-borne noise, the test-based method is shown to be more accurate than the analytic model. Third, means by which individual measured SEA parameters can be integrated into an analytic SEA model are proposed and evaluated. Results indicate that the scope for analytical model improvement, but also highlight the need for more rigorous “consistency” in the way test-based SEA parameters are measured.
Citation: Chen, H., O'Keefe, M., and Bremner, P., "A Comparison of Test-Based and Analytic SEA Models for Vibro-Acoustics of a Light Truck," SAE Technical Paper 951329, 1995, https://doi.org/10.4271/951329. Download Citation
Author(s):
Heng-yee Chen, Melissa O'Keefe, Paul Bremner
Affiliated:
Vibro-Acoustic Sciences Inc.
Pages: 8
Event:
SAE Noise and Vibration Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1995 Noise and Vibration Conference-P-291, SAE 1995 Transactions: Journal of Passenger Cars-V104-6
Related Topics:
Light trucks
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