Calcul de l’effet dièdre d’un pneumatique avec des sculptures

Bin Wang (1, 2) , Denis Duhamel (2, 1)

1 navier umr 8205 - Laboratoire Navier
2 Dynamique des structures et identification

This paper proposes a method to compute the horn effect for tire with treads. The main feature of the method is that it can easily get the sound pressure around the horn-like structure which has grooves with small cross sections on the surfaces. It greatly saves computational costs and gives more physical informations. It is based on the boundary element method, and divides the computational domain of horn effect into an exterior subdomain of tire and several interior subdomains of junctions. It needs BEM system matrices and excitation vector, and also the relation of pressure and velocity between the subdomains ends which can be obtained by analytical or numerical methods. This method is applied to study some simple examples for which analytical or numerical results are available. Good agreements between the proposed method and known results can check its efficiency and accuracy. Then horn effect of tires with treads is computed by this method, and comparisons with smooth tires are made.

Domaines: Matériaux et structures en mécanique [physics.class-ph]; Acoustique [physics.class-ph]; Electrons fortement corrélés [cond-mat.str-el]; Physique Atomique [physics.atom-ph]

Bin Wang, Denis Duhamel. Calcul de l’effet dièdre d’un pneumatique avec des sculptures. 12ème Congrès Français d'acoustique, Apr 2014, Poitiers, France. ⟨hal-01118306⟩