Transfer Path Analysis of Road Noise: Overview and Customized Approaches for Road Rumble Noise

2010-36-0448

10/06/2010

Event
SAE Brasil 2010 Congress and Exhibit
Authors Abstract
Content
The purpose of this paper is to experimentally analyze structural-borne contributions of noise, vibration and harshness during tire rolling, also called Road NVH, in a passenger vehicle using energy transfer path analysis method (TPA), applied in a case study. During the investigation, the influences of the accelerations and forces through the A-arm front suspension bushings are highlighted due their contribution to the estimated overall interior noise, which is correlated to measured overall interior noise. The structural contribution begins as a direct result of tire vibration from surface interactions. These mechanical vibrations, mainly below 450 Hz, are transmitted to all chassis and body subsystems, resulting into noise and vibration perceived by the passengers in the cabin interior. This study is motivated by improvements in Powertrain NVH and Wind Noise, which unbalance Road NVH on various conditions. Thus, when seeking the refinement of tactile, psycho-acoustic and dynamic comfort, motivated by the market that requires increasingly lighter vehicles, with less environmental impact, low cost and high quality, it is necessary to develop the concepts of the entire chassis, hard points and body to optimize dynamic performance ratio versus NVH sources balance.
Meta TagsDetails
DOI
https://doi.org/10.4271/2010-36-0448
Pages
15
Citation
da Silva, C., Neto, A., and de Oliveira, L., "Transfer Path Analysis of Road Noise: Overview and Customized Approaches for Road Rumble Noise," SAE Technical Paper 2010-36-0448, 2010, https://doi.org/10.4271/2010-36-0448.
Additional Details
Publisher
Published
Oct 6, 2010
Product Code
2010-36-0448
Content Type
Technical Paper
Language
English