<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Dispersive acoustic waves in elastic periodic media: a non-local dynamic homogenization approach"^^ . "The paper is addressed to the analysis of low-frequency wave propagation in\r\nmaterials with periodic microstructure. A second-gradient continuum model is derived, which\r\nprovides a sufficiently accurate simulation of for a wide range of wavelengths and a useful tool for\r\nthe wave propagation analysis in bounded domains. The multi-scale kinematics is described\r\nthrough micro-fluctuation functions of the displacement field, which are derived by the solution of\r\na recurrent sequence of cell BVPs and obtained as the superposition of a static and dynamic\r\ncontribution. The latters are proportional to the even powers of the phase velocity and\r\nconsequently the micro-fluctuation functions also depend on the direction of propagation.\r\nTherefore, both the higher order elastic moduli and the inertial terms results to depend on\r\ndynamic correctors. This approach is applied to the study of wave propagation in layered bimaterials\r\nwith orthotropic phases, having an axis of orthotropy parallel to the direction of layering,\r\nin which case, the overall elastic and inertial constants can be determined analytically. The\r\nreliability of the proposed procedure is analysed by comparing the obtained dispersion functions\r\nwith those derived by the Floquet-Bloch theory."^^ . "2013-09" . . . . . . . . . . "Luigi"^^ . "Gambarotta"^^ . "Luigi Gambarotta"^^ . . "Andrea"^^ . "Bacigalupo"^^ . "Andrea Bacigalupo"^^ . . . . "AIMETA 2013 XX congresso dell'Associazione Italiana di Meccanica Teorica e Applicata"^^ . . . . . "Torino (Italy)"^^ . . . . . "HTML Summary of #2511 \n\nDispersive acoustic waves in elastic periodic media: a non-local dynamic homogenization approach\n\n" . "text/html" . . . "TJ Mechanical engineering and machinery"@en . .