The low-frequency bandgap characteristics of a new three-dimensional multihole phononic crystal

Xu, Gang-Gang; Sun, Xiaowei; Li, Ren-Sheng; Zhang, Zhengrong; Song, Tao; Zi-jiang, Liu

doi:10.1007/s00339-021-04958-z

Cited by 10 publications

(2 citation statements)

References 39 publications

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“…Phononic crystals, as a significant branch of artificial composite periodic structures with distinct characteristics have demonstrated excellent control capabilities over mid-to-low-frequency elastic waves. By utilizing the principle of “small size controlling large wavelengths”, phononic crystals offer a promising avenue for controlling low-frequency vibrations and noise [ 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Topological Design of Two-Dimensional Phononic Crystals Based on Genetic Algorithm

et al. 2023

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Phononic crystals are a kind of artificial acoustic metamaterial whose mass density and elastic modulus are periodically arranged. The precise and efficient design of phononic crystals with specific bandgap characteristics has attracted increasing attention in past decades. In this paper, an improved adaptive genetic algorithm is proposed for the reverse customization of two-dimensional phononic crystals designed to maximize the relative bandwidth at low frequencies. The energy band dispersion relation and transmission loss of the optimal structure are calculated by the finite-element method, and the effective wave-attenuation effect in the bandgap range is verified. This provides a solution for the custom-made design of acoustic metamaterials with excellent low-frequency bandgap sound insulation or other engineering applications.

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Section: Introductionmentioning

confidence: 99%

Topological Design of Two-Dimensional Phononic Crystals Based on Genetic Algorithm

et al. 2023

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“…So the vibration properties can be studied by analogy with electronic crystals by calculating their elastic wave energy band structure. It was found that the anti-phase vibrations driven by inertial effects produce a locally resonant band gap, i.e., a frequency range in which elastic waves cannot propagate, when heavy materials are periodically combined with light and soft materials to form vibrators in the substrate [5] . For vibration isolation, locally resonant elastic metamaterials are widely studied because such structures are generally at the subwavelength scale and can achieve effective attenuation of low-frequency elastic waves through smaller geometries [6] .…”

Section: Introductionmentioning

confidence: 99%

A local-resonance elastic metamaterial for the transport of wheel-rail vertical vibrations

Gao

et al. 2022

J. Phys.: Conf. Ser.

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The subwavelength artificial elastic metamaterials can be used for efficient transmission of vibration energies in a tunable frequency range. A local-resonance equal-thickness elastic metamaterial plate is designed in this work. The triangular resonators in the rhombic unit cell are used to exploit the valley degeneracy of the out-of-plane locally resonant modes under hexagonal symmetry conditions. The resonators consist of high-density cores wrapped by soft elastic material, and the differences in the intrinsic frequencies produce a topological band gap caused by the double resonant effect. The reversal of the energy bands proves that the band gap has a non-trivial topology effect, i.e., there exists edge states with robustness and high transmission efficiency. This structure can be utilized in railway transportation as an advanced elastic wave medium material to improve the efficiency of sensing and harvesting the energy of vertical vibrations between vehicles and rails.

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Multi-frequency and low frequency bandgap characteristics of concentric ring cement-based locally resonant phononic crystal

Xiao,

Miao,

Zheng

et al. 2024

Appl. Phys. A

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The low-frequency bandgap characteristics of a new three-dimensional multihole phononic crystal

Cited by 10 publications

References 39 publications

Topological Design of Two-Dimensional Phononic Crystals Based on Genetic Algorithm

Topological Design of Two-Dimensional Phononic Crystals Based on Genetic Algorithm

A local-resonance elastic metamaterial for the transport of wheel-rail vertical vibrations

Multi-frequency and low frequency bandgap characteristics of concentric ring cement-based locally resonant phononic crystal

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