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Alessandro Spadoni

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Related publications (35)

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Composite chiral structures for morphing airfoils: Numerical analyses and development of a manufacturing process

Alessandro Spadoni

This paper investigates complex composite cellular structures featuring a chiral topology with the ability to undergo large overall displacements with limited straining of its components. Numerical analyses are performed to exploit such properties in the d ...

2010

Vibration and Wave Propagation Control of Plates with Periodic Arrays of Shunted Piezoelectric Patches

Alessandro Spadoni

Periodic arrays of shunted, piezoelectric patches are employed to control waves propagating over the surface of plate structures, and corresponding vibrations. The shunted, piezoelectric patches act as sources of impedance mismatch, which gives rise to int ...

SAGE Publications2009

Phononic properties of hexagonal chiral lattices

Alessandro Spadoni

The manuscript reports the outcome of investigations on the phononic properties of a chiral cellular structure. The considered geometry features in-plane hexagonal symmetry, whereby circular nodes are connected through six ligaments tangent to the nodes th ...

Elsevier2009

Vibration isolation via linear and nonlinear periodic devices

Alessandro Spadoni

The current manuscript deals with the design of passive mechanical filters for vibration attenuation a low frequencies. Traditionally, this has been addressed employing dissipation as the attenuation mechanism. While such strategy provides broadfrequency e ...

2009

Wave propagation and band-gap characteristics of chiral lattices

Alessandro Spadoni

Plane wave propagation in a chiral lattice is investigated through the application of Bloch's theorem. Two-dimensional dispersion relations are estimated and analyzed to illustrate peculiar properties of chiral or non-centrosymmetric configurations and inv ...

American Soc Mechanical Engineers, Three Park Avenue, New York, Ny 10016-5990 Usa2008

Vibroacoustics and wave propagation of novel chiral honeycombs - art. no. 69280J

Alessandro Spadoni

Novel tetrachiral honeycomb structures are evaluated for the first time from the vibroacoustic point of view. A numerical method based on Bloch wave approximations for Finite Element models of the unit cells is applied to simulate the pass-stop band charac ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2008

Static aeroelastic response of chiral-core airfoils

Alessandro Spadoni

Extensive research is being devoted to the analysis and application of cellular solids for the design of innovative structural components. The chiral geometry in particular features a unique mechanical behavior which is here exploited for the design of 2D ...

SAGE Publications2007

Numerical and experimental analysis of the static compliance of chiral truss-core airfoils

Alessandro Spadoni

This paper presents an innovative wing profile featuring an internal truss-like structure of chiral topology. The chiral design is selected because of its unique deformation characteristics, which produce a theoretical, in-plane Poisson's ratio of -1. Such ...

2007

Structural and acoustic behavior of chiral truss-core beams

Alessandro Spadoni

This paper analyzes the structural and acoustic behavior of sandwich beams with a chiral truss-core. This particular core configuration is considered to exploit some of the unique properties of the chiral geometry and to explore their potential benefits in ...

American Society of Mechanical Engineers2006

Dynamic response of chiral truss-core assemblies

Alessandro Spadoni

Periodic cellular configurations with negative Poisson's ratio have attracted the attention of several researchers because of their superior dynamic characteristics. Among the geometries with a negative Poisson's ratio, the chiral topology features localiz ...

SAGE Publications2006