4.7 Article

Attenuation band splitting in a finite plate strip with two-dimensional acoustic black holes

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Engineering, Mechanical

Frequency attenuation band with low vibration transmission in a finite-size plate strip embedded with 2D acoustic black holes

Hongli Ji et al.

Summary: This study investigates the vibration transmission characteristics of a plate strip embedded with multiple 2D ABH without additional damping material. The results show vibration attenuation phenomenon below the cut-on frequency of ABHs, with the width and position of the attenuation bands depending on the number of ABHs. The analysis reveals dual physical effects and the important role of local structural resonances induced by ABHs in reducing modal transmission and cancellation. The attenuation phenomenon enriches the understanding of ABH structures and expands the design perspective for vibration attenuation through band creation.

MECHANICAL SYSTEMS AND SIGNAL PROCESSING (2022)

Article Physics, Applied

Thermal imaging of vibrational energy dissipated in a 2D acoustic black hole pit

Thomas Durand-Texte et al.

Summary: An Acoustic Black Hole (ABH) is an effective method for passively damping flexural vibrations in plates. By gradually reducing the thickness and increasing the amplitude of vibrations through a decreasing local wavelength, a trapping effect occurs in the central area where visco-elastic coatings efficiently dissipate localized energy. The role of the constraining layer of visco-elastic material in the efficiency of the ABH is shown experimentally.

APPLIED PHYSICS LETTERS (2021)

Article Acoustics

A light-weight periodic plate with embedded acoustic black holes and bandgaps for broadband sound radiation reduction

Liling Tang et al.

Summary: This paper investigates a structure that combines Acoustic Black Hole (ABH) and sub-wavelength bandgap features, reducing sound radiation properties by tangling ABH elements. The proposed structure shows potential as a lightweight solution for broadband noise reduction by extending the actual dimensions of ABH and lowering its onset frequency.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2021)

Article Physics, Applied

Wave trapping by acoustic black hole: Simultaneous reduction of sound reflection and transmission

Yongzhen Mi et al.

Summary: Acoustic metamaterials, including the concept of Acoustic Black Hole (ABH), show great potential for trapping and dissipating sound energy. In a duct ABH with continuous cross-sectional reduction and impedance variation, the sound speed can be progressively reduced to trap sound waves within the structure. Research on the simultaneous reduction of sound reflection and transmission is promising and could overcome limitations of traditional noise control devices.

APPLIED PHYSICS LETTERS (2021)

Article Construction & Building Technology

Computational analysis of phononic crystal vibration isolators via FEM coupled with the acoustic black hole effect to attenuate railway-induced vibration

Caiyou Zhao et al.

Summary: This study investigates a novel phononic crystal vibration isolator to address the issue of ambient vibration caused by urban rail transit, improving vibration isolation capability through optimization of the structural design and energy distribution. Results demonstrate that the new phononic crystal vibration isolator exhibits better vibration isolation performance under various track irregularities.

CONSTRUCTION AND BUILDING MATERIALS (2021)

Article Acoustics

Complex band structure and evanescent Bloch wave propagation of periodic nested acoustic black hole phononic structure

Nansha Gao et al.

Summary: This study presents a periodic nested acoustic black hole phononic structure and discusses its complex band structures and Bloch wave propagation. The research shows that the acoustic black hole structure has positive application value in vibration reduction design.

APPLIED ACOUSTICS (2021)

Article Mechanics

Broad band gaps for flexural wave manipulation in plates with embedded periodic strip acoustic black holes

Jie Deng et al.

Summary: This paper introduces a new class of phononic crystal consisting of two crossed strip ABHs to open broad and complete BGs in plates, based on the dual benefit of local resonance and Bragg scattering effect. The results show that the BGs can be modulated to very low frequencies via adjusting the ABH parameters, while maintaining the broadband characteristics.

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES (2021)

Article Acoustics

Complete sub-wavelength flexural wave band gaps in plates with periodic acoustic black holes

Liling Tang et al.

Summary: The study proposes a new type of plate structure containing periodically arranged double-layer ABH cells, which provide complete and omnidirectional band gaps. By adjusting ABH parameters and enhancing Bragg scattering, the band gap frequencies can be widened and lowered.

JOURNAL OF SOUND AND VIBRATION (2021)

Article Mathematics, Applied

Merging phononic crystals and acoustic black holes

Xiaofei Lyu et al.

APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION (2020)

Review Acoustics

The acoustic black hole: A review of theory and applications

Adrien Pelat et al.

JOURNAL OF SOUND AND VIBRATION (2020)

Article Acoustics

Design and experimental investigation of V-folded beams with acoustic black hole indentations

Nansha Gao et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2019)

Article Engineering, Mechanical

Gaussian expansion for the vibration analysis of plates with multiple acoustic black holes indentations

Jie Deng et al.

MECHANICAL SYSTEMS AND SIGNAL PROCESSING (2019)

Article Acoustics

Ultrawide band gaps in beams with double-leaf acoustic black hole indentations

Liling Tang et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2017)

Article Physics, Applied

Loss of acoustic black hole effect in a structure of finite size

Liling Tang et al.

APPLIED PHYSICS LETTERS (2016)

Article Acoustics

Wave Energy Focalization in a Plate With Imperfect Two-Dimensional Acoustic Black Hole Indentation

Wei Huang et al.

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME (2016)

Article Mechanics

On the effect of damping on dispersion curves in plates

Elisabetta Manconi et al.

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES (2013)

Article Acoustics

Modelling wave propagation in two-dimensional structures using finite element analysis

Brian R. Mace et al.

JOURNAL OF SOUND AND VIBRATION (2008)

Article Materials Science, Multidisciplinary

Three-component elastic wave band-gap material

ZY Liu et al.

PHYSICAL REVIEW B (2002)