68 citations · 75 across the 8 of their papers we have counts for
11 papers
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 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…
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…
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…
Optimal design of low-frequency band gaps in anti-tetrachiral lattice meta-materials
Andrea Bacigalupo, Giorgio Gnecco, Marco Lepidi +1
The elastic wave propagation is investigated in the beam lattice material characterized by a square periodic cell with anti-tetrachiral microstructure. With reference to the Floque…
Design of acoustic metamaterials through nonlinear programming
Andrea Bacigalupo, Giorgio Gnecco, Marco Lepidi +1
The dispersive wave propagation in a periodic metamaterial with tetrachiral topology and inertial local resonators is investigated. The Floquet-Bloch spectrum of the metamaterial i…
High-frequency parametric approximation of the Floquet-Bloch spectrum for anti-tetrachiral materials
Andrea Bacigalupo, Marco Lepidi
The engineered class of anti-tetrachiral cellular materials is phenomenologically characterized by a strong auxeticity of the elastic macroscopic response. The auxetic behavior, ac…
Optimal design of auxetic hexachiral metamaterials with local resonators
Andrea Bacigalupo, Marco Lepidi, Giorgio Gnecco +1
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…