relation: http://eprints.imtlucca.it/3122/
title: Optimal design of auxetic hexachiral metamaterials with local resonators
creator: Bacigalupo, Andrea
creator: Lepidi, Marco
creator: Gnecco, Giorgio
creator: Gambarotta, Luigi
subject: QA75 Electronic computers. Computer science
subject: T Technology (General)
description: A parametric beam lattice model is formulated to analyse the propagation properties of elastic in-plane waves in an auxetic material based on a hexachiral topology of the periodic cell, equipped with inertial local resonators. The Floquet-Bloch boundary conditions are imposed on a reduced order linear model in the only dynamically active degrees-offreedom. Since the resonators can be designed to open and shift band gaps, an optimal design, focused on the largest possible gap in the low-frequency range, is achieved by solving a maximization problem in the bounded space of the significant geometrical and mechanical parameters. A local optimized solution, for a the lowest pair of consecutive dispersion curves, is found by employing the globally convergent version of the Method of Moving asymptotes, combined with Monte Carlo and quasi-Monte Carlo multi-start techniques.
publisher: IOPScience
date: 2016
type: Article
type: PeerReviewed
identifier:   Bacigalupo, Andrea and Lepidi, Marco and Gnecco, Giorgio and Gambarotta, Luigi  Optimal design of auxetic hexachiral metamaterials with local resonators.  Smart Materials and Structures, 25 (5).   ISSN 0964-1726      (2016)  
relation: http://iopscience.iop.org/0964-1726/page/Forthcoming%20articles;jsessionid=31FBD842F9130CB8755AA993BE1E87FF.c2.iopscience.cld.iop.org#id2