68 citations · 133 across the 14 of their papers we have counts for
17 papers
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…
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…
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…
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…
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…
Dispersive wave propagation in two-dimensional rigid periodic blocky materials with elastic interfaces
Andrea Bacigalupo, Luigi Gambarotta
Dispersive waves in two-dimensional blocky materials with periodic microstructure made up of equal rigid units having polygonal centro-symmetric shape with mass and gyroscopic iner…
Wave propagation in non-centrosymmetric beam-lattices with lumped masses: discrete and micropolar modelling
Andrea Bacigalupo, Luigi Gambarotta
The in-plane acoustic behavior of non-centrosymmetric lattices having nodes endowed with mass and gyroscopic inertia and connected by massless ligaments with asymmetric elastic pro…
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…
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…
Simplified modelling of chiral lattice materials with local resonators
Andrea Bacigalupo, Luigi Gambarotta
A simplified model of periodic chiral beam-lattices containing local resonators has been formulated to obtain a better understanding of the influence of the chirality and of the dy…
Homogenization of periodic hexa- and tetrachiral cellular solids
Andrea Bacigalupo, Luigi Gambarotta
The homogenization of auxetic cellular solids having periodic hexachiral and tetrachiral microstructure is dealt with two different techniques. The first approach is based on the r…