Résumé
We establish a homogenization result and a corrector result for a vibration problem of elasticity. We assume that the data depend in a periodic way on a small parameter Ɛ. We assume also that the Lam e coeffi cients take possibly high values in a periodical set of disconnected inclusions and take values of the order Ɛ² elsewhere. In the fi bered case, torsional vibrations take place at an infi nitesimal scale and give rise to non-local e ffects.