An active metamaterial cell concept for nonreciprocal vibroacoustic transmission

Jalšić, Marin; Alujević, Neven; Garma, Tonko; Ćatipović, Ivan; Jokić, Marko; Wolf, Hinko

doi:10.1016/j.ymssp.2022.109829

Cited by 12 publications

(9 citation statements)

References 35 publications

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“…Currently, there are many studies focused on breaking the reciprocity and achieve unidirectional wave propagations [9][10][11][12]. Non-reciprocity has many applications, such as energy flow control [13,14],…”

Section: Introductionmentioning

confidence: 99%

Non-Reciprocal Wave Propagations in a One-Dimensional Periodic Structure Modified with a Linkage Mechanism

Wang,

Zhao,

Wang

et al. 2024

Preprint

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Reciprocity is a fundamental property of wave propagations, and many researchers devoted their efforts to breaking the reciprocity and implementing unidirectional wave propagations. At present, the main method to realize non-reciprocal waves uses aperiodic structure as the wave propagation medium. The non-reciprocal bandgap achieved by this method is narrow and difficult to adjust actively. To improve the controllability of non-reciprocal bandwidth, a one-dimensional (1D) periodic lattice structure based on linkage element is proposed in the work. The linkage element enables the lattice structure to have nonlinear stiffness with respect to the asymmetry of the equilibrium position. This stiffness asymmetry leads to the non-reciprocity of wave propagation, which provides a new idea for the design of non-reciprocal structures. To deal with the strong nonlinearity and high dimensional characteristics of the structure, the improved incremental harmonic balance (IHB) method is used to analyze the dispersion and bandgap characteristics of the structure. The results show that the structure has two bidirectional bandgaps (high and low frequency) and four unidirectional bandgaps, and the position, width and direction of the bandgap can be adjusted by the equilibrium position and mechanical parameters of the structure. The obtained structural properties are verified by numerical experiments.

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Section: Introductionmentioning

confidence: 99%

Non-Reciprocal Wave Propagations in a One-Dimensional Periodic Structure Modified with a Linkage Mechanism

Wang,

Zhao,

Wang

et al. 2024

Preprint

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“…Breaking reciprocity allows to realize rich and unconventional phenomena, including, but not limited to, unidirectional wave propagation, adiabatic energy pumping [5,6], frequency conversion [7]. These effects can be leveraged to design novel devices such as acoustic rectifiers [8], circulators [9], and topological insulators [10], which can find applications in acoustic communication, signal processing, energy harvesting and vibration isolation [11,12,13].…”

Section: Introductionmentioning

confidence: 99%

A Multiple Scattering Formulation for Elastic Wave Propagation in Space-Time Modulated Metamaterials

Marzani

Palermo³

2023

Preprint

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“…In fluids and solids, the principle of reciprocity in acoustics and elastodynamics codifies a relation of symmetry between action and reaction, which is hard to overcome when time-reversal symmetry applies 24 . Materials exhibiting nonreciprocity, also termed Willis coupling for elastic waves in solids [55][56][57] , however, promise to regulate waves unidirectionally [58][59][60][61][62][63][64][65][66][67][68][69][70] . Coulais et al showed that it is possible to break reciprocity in slightly non-linear static systems, obtaining mechanical metamaterials with asymmetric output under excitation from different directions 23 .…”

Section: Introductionmentioning

confidence: 99%

Non-reciprocal and Non-Newtonian Mechanical Metamaterials

Wang

Martínez

Ulliac

et al. 2023

Preprint

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Non-Newtonian liquids are characterized by a stress and velocity-dependent dynamical response. In elasticity, and in particular in the field of phononics, reciprocity in the equations acts against obtaining a directional response for passive media. Active stimuli-responsive materials have been conceived to overcome it. Significantly, Milton and Willis have shown theoretically in 2007 that quasi-rigid bodies containing masses at resonance can display a very rich dynamical behavior, hence opening a route toward the design of non-reciprocal and non-Newtonian metamaterials. In this paper, we design a solid structure that displays unidirectional shock resistance, thus going beyond Newton’s second law in analogy to non-Newtonian fluids. We design the mechanical metamaterial with finite element analysis and fabricate it using 3D printing at the centimetric scale (with fused deposition modeling – FDM) and at the micrometric scale (with two-photon lithography – TPL). The non-Newtonian elastic response is measured via dynamical velocity-dependent experiments. Reversing the direction of the impact, we further highlight the intrinsic non-reciprocal response.

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An active metamaterial cell concept for nonreciprocal vibroacoustic transmission

Cited by 12 publications

References 35 publications

Non-Reciprocal Wave Propagations in a One-Dimensional Periodic Structure Modified with a Linkage Mechanism

Non-Reciprocal Wave Propagations in a One-Dimensional Periodic Structure Modified with a Linkage Mechanism

A Multiple Scattering Formulation for Elastic Wave Propagation in Space-Time Modulated Metamaterials

Non-reciprocal and Non-Newtonian Mechanical Metamaterials

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