68 citations · 301 across the 29 of their papers we have counts for
36 papers
The generalized Floquet-Bloch spectrum for periodic thermodiffusive layered materials
Francesca Fantoni, Lorenzo Morini, Andrea Bacigalupo +1
The dynamic behaviour of periodic thermodiffusive multi-layered media excited by harmonic oscillations is studied. In the framework of linear thermodiffusive elasticity, periodic l…
On principal component analysis of the convex combination of two data matrices and its application to acoustic metamaterial filters
Giorgio Gnecco, Andrea Bacigalupo
In this short paper, a matrix perturbation bound on the eigenvalues found by principal component analysis is investigated, for the case in which the data matrix on which principal…
Variational-asymptotic homogenization of thermoelastic periodic materials with thermal relaxation
Deison Préve, Andrea Bacigalupo, Marco Paggi
A multiscale asymptotic homogenization method for periodic microstructured materials in presence of thermoelasticity with periodic spatially dependent one relaxation time is introd…
Enhanced dynamic homogenization of hexagonally packed granular materials with elastic interfaces
Andrea Bacigalupo, Luigi Gambarotta
It is well known that the classical energetically consistent micropolar model has limits in simulating the frequency band structure of packed granular materials (see Merkel et al.,…
A dynamic high-frequency consistent continualization of beam-lattice materials
Andrea Bacigalupo, Luigi Gambarotta
The main purpose of the present paper is to solve the thermodynamic inconsistencies that result when deriving equivalent micropolar models of periodic beam-lattice materials throug…
Principal Component Analysis Applied to Gradient Fields in Band Gap Optimization Problems for Metamaterials
Giorgio Gnecco, Andrea Bacigalupo, Francesca Fantoni +1
A promising technique for the spectral design of acoustic metamaterials is based on the formulation of suitable constrained nonlinear optimization problems. Unfortunately, the stra…
Chiral two-dimensional periodic blocky materials with elastic interfaces: auxetic and acoustic properties
Andrea Bacigalupo, Luigi Gambarotta
Two novel chiral block lattice topologies are here conceived having interesting auxetic and acoustic behavior. The architectured chiral material is made up of a periodic repetition…
Identification of non-local continua for lattice-like materials
Andrea Bacigalupo, Luigi Gambarotta
The paper is focused on the dynamic homogenization of lattice-like materials with lumped mass at the nodes to obtain energetically consistent models providing accurate descriptions…
Wave propagation modeling in periodic elasto-thermo-diffusive materials via multifield asymptotic homogenization
Francesca Fantoni, Andrea Bacigalupo
A multifield asymptotic homogenization technique for periodic thermo-diffusive elastic materials is provided in the present study. Field equations for the first-order equivalent me…
Design of tunable acoustic metamaterials with periodic piezoelectric microstructure
Andrea Bacigalupo, Maria Laura De Bellis, Diego Misseroni
An innovative special class of tunable periodic metamaterials is designed, suitable for realising high-performance acoustic filters. The metamaterial is made up of a phononic cryst…
Free and forced wave propagation in beam lattice metamaterials with viscoelastic resonators
F Vadalà, A Bacigalupo, M Lepidi +1
Beam lattice materials are characterized by a periodic microstructure realizing a geometrically regular pattern of elementary cells. In these microstructured materials, the dispers…
Machine-learning techniques for the optimal design of acoustic metamaterials
Andrea Bacigalupo, Giorgio Gnecco, Marco Lepidi +1
Recently, an increasing research effort has been dedicated to analyse the transmission and dispersion properties of periodic acoustic metamaterials, characterized by the presence o…
A phase field approach for damage propagation in periodic microstructured materials
Francesca Fantoni, Andrea Bacigalupo, Marco Paggi +1
In the present work, the evolution of damage in periodic composite materials is investigated through a novel finite element-based multiscale computational approach. The methodology…
A novel layered topology of auxetic materials based on the tetrachiral honeycomb microstructure
Ferdinando Auricchio, Andrea Bacigalupo, Luigi Gambarotta +3
Microstructured honeycomb materials may exhibit exotic, extreme and tailorable mechanical properties, suited for innovative technological applications in a variety of modern engine…
Characterization of hybrid piezoelectric nanogenerators through dynamic asymptotic homogenization
Maria Laura De Bellis, Andrea Bacigalupo, Giorgio Zavarise
In the framework of energy scavenging for applications in flexible/strechable electronics, hybrid piezoelectric nanogenerators, made up with Zinc oxyde nanorods, embedded in a poly…
Acoustic waveguide filters made up of rigid stacked materials with elastic joints
Andrea Bacigalupo, Luigi Gambarotta, Marco Lepidi +1
The acoustic dispersion properties of monodimensional waveguide filters can be assessed by means of the simple prototypical mechanical system made of an infinite stack of periodic…
Complex frequency band structure of periodic thermo-diffusive materials by Floquet-Bloch theory
Andrea Bacigalupo, Maria Laura De Bellis, Giorgio Gnecco
This work deals with the micromechanical study of periodic thermo-diffusive elastic multi-layered materials, which are of interest for the fabrication of solid oxide fuel cells (SO…
Dynamic asymptotic homogenization for periodic viscoelastic materials
Rosaria Del Toro, Andrea Bacigalupo, Marco Paggi
A non-local dynamic homogenization technique for the analysis of a viscoelastic heterogeneous material which displays a periodic microstructure is herein proposed. The asymptotic e…
Generalized micropolar continualization of 1D beam lattices
Andrea Bacigalupo, Luigi Gambarotta
The enhanced continualization approach proposed in this paper is aimed to overcome some drawbacks observed in the homogenization of beam lattices. To this end an enhanced homogeniz…
Identification of higher-order continua equivalent to a Cauchy elastic composite
A. Bacigalupo, M. Paggi, F. Dal Corso +1
A heterogeneous Cauchy elastic material may display micromechanical effects that can be modeled in a homogeneous equivalent material through the introduction of higher-order elasti…
Design of thermo-piezoelectric microstructured bending actuators via multi-field asymptotic homogenization
Francesca Fantoni, Andrea Bacigalupo, Marco Paggi
The use of integrated MicroElectroMechanical systems (MEMS) is recently spread thanks to their improved sensitivity, accuracy and reliability. Accurate preliminary computations bor…
Bloch wave filtering in tetrachiral materials via mechanical tuning
Francesca Vadalà, Andrea Bacigalupo, Marco Lepidi +1
The periodic cellular topology characterizing the microscale structure of a heterogeneous material may allow the finest functional customization of its acoustic dispersion properti…
Acoustic wave polarization and energy flow in periodic beam lattice materials
Andrea Bacigalupoa, Marco Lepidi
The free propagation of acoustic plane waves through cellular periodic materials is generally accompanied by a flow of mechanical energy across the adjacent cells. The paper focuse…
Multi-parametric sensitivity analysis of the band structure for tetrachiral acoustic metamaterials
Marco Lepidi, Andrea Bacigalupo
Tetrachiral materials are characterized by a cellular microstructure made by a periodic pattern of stiff rings and flexible ligaments. Their mechanical behaviour can be described b…