Road stiffness influence on rolling noise: Parametric study using a rolling tire model

J.-F. Hamet (1) , P. Klein (1)

1 INRETS/LTE - Laboratoire Transport et Environnement

Comments: the INRETS-LTE edition of the report SILVIA-INRETS-008-WP2 published in July 2003. Summary: The influence of the road mechanical stiffness on tire road noise has been a research subject since the late 70's. Research efforts have addressed principally the measurement procedures of the road mechanical stiffness and the development of poro-elastic surfaces, including implementation on pilote sites. This report is an attempt to quantify the influence of this mechanic stiffness on tire road noise. The estimation is performed by simulation using a rolling tire algorithm developed at INRETS. The stiffness of present pavements is much larger than the tire sicknesses. It appears that a reduction of this pavement stiffness could reduce substantially the rolling noise. For his, the pavement stiffness must be of the same order of magnitude than the pavement stiffness (pavement stiffness/tire stiffness <10). The noise reduction would be practically independent of speed and could reach 5 dB(A). The reduction appears to occur mainly at medium and high frequencies.

Mots clés: rolling noise; road sti®ness; modelling

Domaines: Acoustique [physics.class-ph]; Acoustique [physics.class-ph]

J.-F. Hamet, P. Klein. Road stiffness influence on rolling noise: Parametric study using a rolling tire model. 2004, 23p. ⟨hal-00546101⟩