A panorama of dispersion curves for the weighted isotropic relaxed micromorphic model - Laboratoire SMS-ID Accéder directement au contenu
Article Dans Une Revue Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik Année : 2017

A panorama of dispersion curves for the weighted isotropic relaxed micromorphic model

Résumé

We consider the weighted isotropic relaxed micromorphic model and provide an in depth investigation of the characteristic dispersion curves when the constitutive parameters of the model are varied. The weighted relaxed micromorphic model generalizes the classical relaxed micromorphic model previously introduced by the authors, since it features the Cartan-Lie decomposition of the tensors P,t and Curl P in their dev, dev sym, skew and spheric part. It is shown that the split of the tensor P,t in the micro-inertia provide an independent control of the cut-offs of the optic benches. This is crucial for the future calibration of the relaxed micromorphic model on real band-gap metamaterials. Even if the physical interest of the introduction of the split of the tensor Curl P is less evident than in the previous case, we discuss in detail which is its effect on the dispersion curves. Finally, we also provide a complete parametric study involving all the constitutive parameters of the introduced model, so giving rise to an exhaustive panorama of dispersion curves for the relaxed micromorphic model.
Fichier principal
Vignette du fichier
1610.03296.pdf (5.93 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01720473 , version 1 (01-03-2018)

Identifiants

Citer

Marco Valerio d'Agostino, Gabriele Barbagallo, Ionel-Dumitrel Ghiba, Angela Madeo, Patrizio Neff. A panorama of dispersion curves for the weighted isotropic relaxed micromorphic model. Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2017, ⟨10.1002/zamm.201600227⟩. ⟨hal-01720473⟩
62 Consultations
24 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More