Homogénéisation de matériaux périodiques à l'aide de la méthode des éléments finis, dans la limite des grandes longueurs d'onde

A numerical model has been developed to study the propagation of plane harmonic waves in single, doubly or triply periodic materials. The homogenized properties of porous materials are determined with the help of an anisotropic model, in the limit of large wavelengths. A validation has been carried out with periodically perforated plates, the resonance frequencies of which have been measured