Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
The influence of tyre cavity on road noise: A theoretical and experimental comparison
Submission Author:
Guilherme Henrique Godoi , MG
Co-Authors:
Lázaro Donadon, Rafael Morais Cunha, Frederico Luiz de Carvalho Moura, WAGNER BARBOSA, Guilherme Henrique Godoi
Presenter: Guilherme Henrique Godoi
doi://10.26678/ABCM.COBEM2017.COB17-2854
Abstract
Consumers are increasingly linking the vehicle quality to its vibroacoustic comfort, considering this an important factor in purchasing decisions. Most of vehicle noise are related to powertrain, wind and tyre/road interaction, which is currently the most important source of noise. In this sense, the present work aims to study how the tyre cavity resonances influences the interior noise due to the vibration transmission across the wheel and the suspension system into the vehicle compartment. First, two analytical models are presented to estimate the tyre cavity resonance frequencies. Then, road tests are performed to correlate the experimental results with the analytical models and theoretical concepts. Through the measurements was verified that tyre cavity resonances are the main contributions to the interior noise. Complementarily, applying the multiple coherence function it was confirmed that the noise measured in the microphones has a high correlation with the vibration measured in the suspension knuckles, proving that the interior noise is prominently originated by structural transmission.
Keywords
Tyre/road noise, tyre cavity resonance, vehicle interior noise
