Analytical characterization of the dynamic response of viscoelastic metamaterials

Valappil, Sabiju Valiya; Krushynska, Anastasiia O.; Aragón, Alejandro M.

doi:10.1016/j.commatsci.2023.112385

Cited by 2 publications

(1 citation statement)

References 68 publications

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“…In metamaterials engineering, wave attenuation due to viscous losses remains scarcely understood, despite continuous developments in analysis techniques, including wave finite method [5], structural damping approach [6], different formulations of the finite-element method [7], [8], spectral element method [9], etc. The key reasons behind this are the lack of comprehensive data about viscoelastic properties, especially for additively manufactured materials, and the limitations of mass-spring-damper models that often fail in correctly reproducing viscous dissipation in real materials.…”

Section: Introductionmentioning

confidence: 99%

Material dissipation effects on wave propagation in polycarbonate elastic metamaterial plates

Krushynska,

Battegazzore,

Fina

et al. 2023

2023 IEEE International Ultrasonics Symposium (IUS)

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Section: Introductionmentioning

confidence: 99%

Material dissipation effects on wave propagation in polycarbonate elastic metamaterial plates

Krushynska,

Battegazzore,

Fina

et al. 2023

2023 IEEE International Ultrasonics Symposium (IUS)

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A viscoelastic metamaterial beam for integrated vibration isolation and energy harvesting

Zhao,

Lu,

Ding

et al. 2024

Appl. Math. Mech.-Engl. Ed.

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Locally resonant metamaterials have low-frequency band gaps and the capability of converging vibratory energy in the band gaps at resonant cells. It has been demonstrated by several researchers that the dissipatioin of vibratory energy within the band gap can be improved by using viscoelastic materials. This paper designs an integrated viscoelastic metamaterial for energy harvesting and vibration isolation. The viscoelastic metamaterial is achieved by a viscoelastic beam periodically arrayed with spatial ball-pendulum nonlinear energy harvesters. The nonlinear resonator with an energy harvesting function is achieved by placing a free-rolling magnetic ball in a spherical cavity with an additional induction coil. The dynamic equations of viscoelastic metamaterials under transverse excitation are established, and the energy harvesting and vibration isolation characteristics within the dispersion relation of viscoelastic metamaterials are analyzed. The results show that the vibrations of the main body of the viscoelastic metamaterial beam are significantly suppressed in the frequency range of the local resonance band gap. At the same time, the elastic waves are limited in the nonlinear resonator with an energy harvesting function, which improves the energy output. Finally, an experimental platform of viscoelastic metamaterial vibration is established for validation purposes.

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Analytical characterization of the dynamic response of viscoelastic metamaterials

Cited by 2 publications

References 68 publications

Material dissipation effects on wave propagation in polycarbonate elastic metamaterial plates

Material dissipation effects on wave propagation in polycarbonate elastic metamaterial plates

A viscoelastic metamaterial beam for integrated vibration isolation and energy harvesting

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