Periodic piezoelectric sensor-actuator array for vibration suppression on a beam

Beck, Benjamin S.; Cunefare, Kenneth A.; Collet, Manuel; Ruzzene, Massimo

doi:10.1117/12.847750

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…A long cantilever beam with a patch array and necessary data acquisition equipment was assembled to investigate the effect of the negative capacitance shunts. The beam, Figure 2, has been tested in previous work (Beck, Cunefare et al 2010). A photograph of the beam is shown in Figure 7.…”

Section: Methodsmentioning

confidence: 99%

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Beck

Cunefare

Ruzzene

et al. 2011

Journal of Intelligent Material Systems and Structures

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The use of both shunted piezoelectric elements and periodic arrays have been investigated independently as well as used in conjunction to modify the vibration of a system. Piezoelectric patches bonded to a cantilever beam which are shunted with an active circuit, specifically a negative capacitance shunt, can control broadband flexural vibrations of a structure. Also, periodic arrays integrated into a structure allow for modification of propagating waves through the mechanical "stop-bands". The performance of a combined shunted periodic piezoelectric patch array will be analyzed here by investigating the velocity amplitude of the beam upstream and downstream of the array section, and the number of control elements in the array. The negative capacitance shunts caused a global spatial average velocity reduction of 5 dB at the modal peaks from 500 to 5000 Hz. The reduction is shown to be greater in the downstream section of the beam. Also, by increasing the number of patches in the array the attenuation of the resonances increased nonlinearly. The results show that a negative capacitance periodic control array is an effective global vibration reduction system and has the ability to localize energy near the forcing of a structure.

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Section: Methodsmentioning

confidence: 99%

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Beck

Cunefare

Ruzzene

et al. 2011

Journal of Intelligent Material Systems and Structures

Self Cite

View full text Add to dashboard Cite

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Tunable in-plane topologically protected edge waves in continuum Kagome lattices

Riva

Quadrelli

Cazzulani

et al. 2018

Journal of Applied Physics

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In this paper, we report the evidence of topologically protected edge waves (TPEWs) in continuum Kagome lattice. According to the bulk edge correspondence principle, such edge states are inherently linked with the topological characteristics of the material band structure and can, therefore, be predicted evaluating the associated topological invariant. Due to the non-trivial band structures shown in the context of quantum valley Hall effect, TPEWs are supported at the interface between two lattices characterized by different valley Chern numbers. The break of lattice symmetry is obtained here, in contrast with other similar works in continuum elastic structures, biasing in the stiffness properties of the unit cell, instead of manipulating mass at sublattice points. This opens new promising possibilities related to waveguide tunability and wave propagation control, exploiting the established techniques for stiffness modulation in elastic structures. A sensitivity analysis of robustness of the supported energy transport is provided, showing the amount of de-localized disorder the waveguide is immune to, and how performances are affected by perturbations in the nominal parameters of the lattice.

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Periodic piezoelectric sensor-actuator array for vibration suppression on a beam

Cited by 2 publications

References 11 publications

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Tunable in-plane topologically protected edge waves in continuum Kagome lattices

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