Elsevier

Procedia Engineering

Volume 199, 2017, Pages 3296-3301
Procedia Engineering

Road noise input identification for vehicle interior noise by multi-reference Transfer Path Analysis

https://doi.org/10.1016/j.proeng.2017.09.412Get rights and content
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Abstract

Multi-reference Transfer Path Analysis with matrix inversion and Principal Component Decomposition is a standard technique in automotive NVH, where multiple sources contribute in a semi-coherent manner, such as the wheels of a vehicle in cruise.

In the present work, the road noise contribution from each vehicle axle is examined by modular application of TPA, exploring the dynamics of chassis and body responsible for delivering the acoustic amplification in the cabin. The typical vehicle development setup involves reference sensors located at the wheel suspension hubs, around the chassis-to-body connection points and at the receiver in the cabin. These three sets of references for principal component decomposition are presented, and their application is explored considering their physical meaning and an understanding of the vehicle structural dynamics.

The results are evaluated for extracting appropriate load cases to be applied to full vehicle CAE development.

Keywords

Structure Borne Road Noise (SBRN)
Transfer Path Analysis (TPA)
Principal Component Analysis (PCA)

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