3D auxetic single material periodic structure with ultra-wide tunable bandgap

L D'Alessandro, V Zega, R Ardito, A Corigliano - Scientific reports, 2018 - nature.com
The design and the combination of innovative metamaterials are attracting increasing
interest in the scientific community because of their unique properties that go beyond the …

Isogeometric shape optimization of smoothed petal auxetic structures via computational periodic homogenization

ZP Wang, LH Poh, J Dirrenberger, Y Zhu… - Computer Methods in …, 2017 - Elsevier
An important feature that drives the auxetic behaviour of the star-shaped auxetic structures is
the hinge-functional connection at the vertex connections. This feature poses a great …

Machine-learning techniques for the optimal design of acoustic metamaterials

A Bacigalupo, G Gnecco, M Lepidi… - Journal of Optimization …, 2020 - Springer
Recently, an increasing research effort has been dedicated to analyze the transmission and
dispersion properties of periodic acoustic metamaterials, characterized by the presence of …

Lightweight mechanical metamaterials designed using hierarchical truss elements

L Mizzi, A Spaggiari - Smart Materials and Structures, 2020 - iopscience.iop.org
Rotating unit systems constitute one of the main classes of auxetic metamaterials. In this
work, a new design procedure for lightweight auxetic systems based on this deformation …

[HTML][HTML] Study of tunable locally resonant metamaterials: Effects of spider-web and snowflake hierarchies

S Sepehri, H Jafari, MM Mashhadi, MRH Yazdi… - International Journal of …, 2020 - Elsevier
The present research is an effort to enhance and control locally resonant bandgaps in
periodic metamaterials of hexagonal and triangular topologies by introducing spider-web …

Computational design of innovative mechanical metafilters via adaptive surrogate-based optimization

A Bacigalupo, G Gnecco, M Lepidi… - Computer Methods in …, 2021 - Elsevier
Architected materials and metamaterials are a challenging frontier for the development of
optimal design strategies targeted at the active and passive control of elastic wave …

[HTML][HTML] Optimal design of low-frequency band gaps in anti-tetrachiral lattice meta-materials

A Bacigalupo, G Gnecco, M Lepidi… - Composites Part B …, 2017 - Elsevier
The elastic wave propagation is investigated in a beam lattice material characterized by a
square periodic cell with anti-tetrachiral microstructure. With reference to the Floquet-Bloch …

Auxetic behavior and acoustic properties of microstructured piezoelectric strain sensors

ML De Bellis, A Bacigalupo - Smart Materials and Structures, 2017 - iopscience.iop.org
The use of multifunctional composite materials adopting piezo-electric periodic cellular
lattice structures with auxetic elastic behavior is a recent and promising solution in the …

Band-gap structure in two-and three-dimensional cellular locally resonant materials

M Moscatelli, R Ardito, L Driemeier, C Comi - Journal of Sound and …, 2019 - Elsevier
Wave propagation in periodic locally resonant materials (LRM) is characterized by the
presence of band-gaps occurring at relatively low frequencies which can be exploited for …

Design of tunable acoustic metamaterials with periodic piezoelectric microstructure

A Bacigalupo, ML De Bellis, D Misseroni - Extreme Mechanics Letters, 2020 - Elsevier
An innovative special class of tunable periodic metamaterials is designed, suitable for
realizing high-performance acoustic filters. The metamaterial is made up of a phononic …