Title: Evaluation of road-induced interior noise of vehicle based on virtual experiment

Authors: Guangqiang Wu, Yuan Fang, Xianjie Meng

Addresses: School of Automotive Engineering, Tongji University, Shanghai 200092, PR China. ' School of Automotive Engineering, Tongji University, Shanghai 200092, PR China. ' School of Automotive Engineering, Tongji University, Shanghai 200092, PR China

Abstract: According to the mathematical model for the road-induced noise deduced, local stiffness and noise sensitivities at chassis-body connection points are important in evaluating the interior noise of low frequency range as well as modal analysis of car body and acoustic cavity. A rigid-elastic coupled model of full vehicle, an acoustic-structure interaction model of the car body and a roughness road model were built. The interior noise near the driver|s ear was analysed, including measurements of Input Point Inertance (IPI) and Noise Transfer Function (NTF) at body joints, Operating Deflection Shape (ODS) and Transfer Path Analysis (TPA).

Keywords: road-induced noise; IPI; input point inertance; NTF; noise transfer function; ODS; operating deflection shape; TPA; transfer path analysis; vehicle noise; vehicle design; mathematical modelling; interior noise; acoustic-structure interaction.

DOI: 10.1504/IJVD.2008.021152

International Journal of Vehicle Design, 2008 Vol.48 No.1/2, pp.65 - 80

Published online: 06 Nov 2008 *

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