Publications (12)
Modeling real phononic crystals via the weighted relaxed micromorphic model with free and gradient micro-inertia
Angela Madeo, Manuel Collet, Marco Miniaci +3
In this paper the relaxed micromorphic continuum model with weighted free and gradient micro-inertia is used to describe the dynamical behavior of a real two-dimensional phononic c…
Proof of concept for an ultrasensitive meta-device to detect and localize nonlinear elastic sources
Marco Miniaci, Antonio S. Gliozzi, Bruno Morvan +4
The appearance of nonlinear effects in elastic wave propagation is one of the most reliable and sensitive indicators of the onset of material damage. However, these effects are usu…
Spider-Web Inspired Mechanical Metamaterials
Marco Miniaci, Anastasiia Krushynska, Alexander B. Movchan +2
Spider silk is a remarkable example of bio-material with superior mechanical characteristics. Its multilevel structural organization of dragline and viscid silk leads to unusual an…
Band gap enhancement in periodic frames using hierarchical structures
VinÃcius F. Dal Poggetto, Federico Bosia, Marco Miniaci +1
The quest for novel designs for lightweight phononic crystals and elastic metamaterials with wide lowfrequency band gaps has proven to be a significant challenge in recent years. I…
Spectral flow of a localized mode in elastic media
Marco Miniaci, Florian Allein, Raj Kumar Pal
The introduction of structural defects in otherwise periodic media is well known to grant exceptional space control and localization of waves in various physical fields, including…
Shapely Atoms
Andrea Bergamini, Marco Miniaci, Tommaso Delpero +3
The study of vibrational properties in engineered periodic structures relies on the early intuitions of Haüy and Boscovich, who regarded crystals as ensembles of periodically arra…
An ultrasensitive device with embedded phononic crystals for the detection and localisation of nonlinear guided waves
PaweÅ Kudela, Maciej Radzienski, Marco Miniaci +2
In this work, a novel approach for the detection and localisation of nonlinear guided waves often associated with the presence of damage in structural components is proposed. The m…
Bio-inspired hierarchical dissipative metamaterials
Marco Miniaci, Anastasiia Krushynska, Federico Bosia +1
Hierarchical structures with constituents over multiple length scales are found in various natural materials like bones, shells, spider silk and others, all of which display enhanc…
Longitudinal-flexural wave mode conversion via periodically undulated waveguides with constant and graded profiles
Vinicius F. Dal Poggetto, Fabio Nistri, Nicola M. Pugno +3
Wave mode conversion allows to transform energy from one propagating wave type to another at a boundary where a change in material properties or geometry occurs. Converting longitu…
A frequency-preserving and time-invariant metamaterial-based nonlinear acoustic diode
Antonio S. Gliozzi, Marco Miniaci, Anastasiia O. Krushynska +4
We present the realization of an acoustic diode or rectifier, exploiting symmetry-breaking nonlinear effects like harmonic generation and wave mixing and the filtering capabilities…
Valley based splitting of topologically protected helical waves in elastic plates
Marco Miniaci, Raj Kumar Pal, Raffaele Manna +1
Topological protection offers unprecedented opportunities for wave manipulation and energy transport in various fields of physics, including elasticity, acoustics, quantum mechanic…
Relaxed micromorphic modeling of the interface between a homogeneous solid and a band-gap metamaterial: new perspectives towards meta-structural design
Angela Madeo, Gabriele Barbagallo, Manuel Collet +3
In the present paper, the material parameters of the isotropic relaxed micromorphic model derived for a specific metamaterial in a previous contribution are used to model its trans…