Bandgap widening by optimized disorder in one-dimensional locally resonant piezoelectric metamaterials

Thomes, Renan Lima; Mosquera-Sánchez, Jaime A.; Marqui, Carlos De

doi:10.1016/j.jsv.2021.116369

Cited by 29 publications

(4 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, energy harvesting has been extensively explored over the past decade for the purpose of enabling self-powered microelectronics and wireless sensors for various monitoring applications. Electromechanical coupling in energy harvesting systems brings potentials for simultaneous power extraction from ambient vibration sources and vibration mitigation with the added electric damping [42][43][44][45][46]. For example, Hu et al [47] conducted an analytical study of a multifunctional system that combines acoustic-elastic metamaterial with energy-harvesting capabilities, achieving simultaneous vibration suppression and energy harvesting through the utilization of a double-valley phenomenon and parametric optimization.…”

Section: Introductionmentioning

confidence: 99%

Aeroelastic metastructure for simultaneously suppressing wind-induced vibration and energy harvesting under wind flows and base excitations

Chen,

Xu,

Zhao

2024

Smart Mater. Struct.

View full text Add to dashboard Cite

This paper proposes an innovative dual-functional aeroelastic metastructure that effectively suppresses wind-induced structural vibrations under either pure aerodynamic galloping or concurrent galloping and base excitations, while simultaneously harnessing the vibratory energy to potentially allow for self-powered onboard low-power sensing applications. Two configurations are theoretically and experimentally analysed and compared, one consisting of simply regular locally resonating masses subjected to no external forces, while the other comprising locally resonating bluff bodies which experience additional aerodynamic galloping forces. Numerical investigation is conducted based on an established aero-electro-mechanically coupled model. Wind tunnel wind tunnel and base vibration experiments are carried out using a fabricated aeroelastic metastructure prototype to characterize the energy transfer mechanisms and validate the numerical results. The mutual effects of key system parameters, including the frequency ratio, mass ratio, load resistance and electromechanical coupling strength, on the dual-functional capabilities are examined, providing a comprehensive design guideline for efficiently enhancing the energy transfer and conversion. Experimentally, the galloping displacement of the primary structure is attenuated by 78% with a measured power output of 2.63mW from a single auxiliary oscillator at a wind speed of 8m/s. This research opens new possibilities for designing novel metastructures in practical scenarios where both wind-induced vibration suppression and energy harvesting are crucial.

show abstract

Section: Introductionmentioning

confidence: 99%

Aeroelastic metastructure for simultaneously suppressing wind-induced vibration and energy harvesting under wind flows and base excitations

Chen,

Xu,

Zhao

2024

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…This phenomenon is known as disorder, i.e., real conditions deviating from the ideal ones [12][13][14]. Investigations have demonstrated that the dynamical properties of disordered systems create considerable changes due to the asymmetry of the structures, and many researchers have carried out studies on the vibration properties of disordered periodic structures [15][16][17][18]. Laxalde and Pierre [19] established the reducedorder dynamics model for multi-stage disordered cyclic symmetric bladed disk assemblies, explored the modal localization properties of the disordered bladed disk, and analyzed the influence of the disorder degree on the sensitivity of the bladed disk.…”

Section: Introductionmentioning

confidence: 99%

Vibration Characteristics of Asymmetric Flexible Cantilever Beams Connected to a Central Rigid Body

Gong,

Wei,

Liu

et al. 2024

Machines

View full text Add to dashboard Cite

A satellite with two solar wings can be modeled using a pair of symmetric flexible cantilever beams connected to a central rigid body. Due to certain reasons, the symmetric flexible cantilever beams may be turned into asymmetric ones, which will inevitably influence the vibration properties of the structural system. By changing the structural sizes and adding local mass on one side of the two beams, a structural system with asymmetric mass distribution is obtained and its vibration characteristics are investigated. Hamilton’s principle with the assumed mode method is employed to establish the equation of motion of the asymmetric structural system. The natural frequencies, mode shapes, frequency response curves and displacement time histories of the system are calculated, and they are compared with those of the structural system with a symmetric mass distribution. The correctness and feasibility of the present analytical method are verified by means of the finite element method (FEM) and a vibration experiment. The analytical results show that the mass asymmetry of the two beams leads to the mode localization phenomenon, and the coupling effect between the two beams and the central rigid body is enhanced. The larger the mass asymmetry is and the closer the position of the added local mass to the end of the cantilever beam is, the more obvious of the mode localization phenomenon is and the more obvious of the coupling effect between the two beams and the central rigid body is. The present investigation results are helpful for the dynamic analysis and design of spacecraft structures composed of flexible solar wings and a central rigid body.

show abstract

“…Such intelligent systems have been applied to manipulate different mechanical properties and attenuate vibration and elastic waves. Placement of the piezo sensors periodically induces locally resonant (LR) open bandgaps [16], as attributed by frequency zones where energy propagation is forbidden [17]. It includes techniques such as multimodal [12,61], negative capacitance [20], and variations in the resistive-indutivecapacitive circuit [21].…”

Section: Introductionmentioning

confidence: 99%

Bandgap manipulation of single and multi-frequency smart metastructures with random impedance disorder

Machado¹,

Moura²,

Dey³

et al. 2022

Smart Mater. Struct.

View full text Add to dashboard Cite

Randomness in the media breaks its periodicity aﬀecting the vibration and wave propagation performance. Such disorder caused by the variability may lead to interesting physical phenomena such as trapping and scattering waves, wave reﬂection, and energy localisation. While the randomness may be attributed to manufacturing irregularities and quantifying its eﬀect is crucial for ensuring adequate performance of a range of smart systems, these eﬀects can also be exploited for manipulating the wave properties. Here we investigate a smart metastructure in the form of a beam integrated with piezoelectric transducers coupled to a resonant shunt circuit. The piezoelectric shunt in a periodical arrangement can induce locally resonant bandgaps that can be employed in wave and vibration manipulation (and control). This paper quantiﬁes the uncertainty associated with electrical circuit components that aﬀect the circuit impedance. Such uncertainty essentially propagates to the beam smart metamaterial, inﬂuencing its wave and vibration control feature. Numerical results of the unimorph meta-beam with single and multi-frequency shunt conﬁguration show that the bandgap behaviour is sensitive to the random disorder associated with circuit impedance parameters, which can, in turn, be exploited for enhanced functionalities based on optimal RL shunt circuits for controlling structural vibration response along with wave propagation and attenuation.

show abstract

Bandgap widening by optimized disorder in one-dimensional locally resonant piezoelectric metamaterials

Cited by 29 publications

References 43 publications

Aeroelastic metastructure for simultaneously suppressing wind-induced vibration and energy harvesting under wind flows and base excitations

Aeroelastic metastructure for simultaneously suppressing wind-induced vibration and energy harvesting under wind flows and base excitations

Vibration Characteristics of Asymmetric Flexible Cantilever Beams Connected to a Central Rigid Body

Bandgap manipulation of single and multi-frequency smart metastructures with random impedance disorder

Contact Info

Product

Resources

About