☆ 4.7 Article

Complex frequency analysis and source of losses in rectangular sonic black holes

JOURNAL OF SOUND AND VIBRATION (2024)

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 Acoustics

Multiple resonances in lossy acoustic black holes- theory and experiment

Olga Umnova et al.

Summary: This study investigates the acoustic properties of the metamaterial graded absorber, also known as the "acoustic black hole," through experimental and numerical modeling. It demonstrates that the absorber exhibits high absorption coefficients across a range of frequencies, attributed to the resonances along the structure and variations in the properties of the air inside the channel. The model is validated using impedance tube measurements and finite element simulations, showing that the elasticity of the plates affects the absorption coefficient at plate resonances and frequencies lower than them.

JOURNAL OF SOUND AND VIBRATION (2023)

添加到收藏夹

Article Acoustics

How the waveguide acoustic black hole works: A study of possible damping mechanisms

Abbas Mousavi et al.

Summary: The acoustic black hole effect in waveguides was studied using finite element simulations, and the damping mechanisms involved were investigated. The results showed that adding damping material to the end of the waveguide did not significantly contribute to the performance, and local absorption effects on the outer surface of the cylinder were identified as the primary damping source.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2022)

添加到收藏夹

Article Acoustics

On the role of resonance and thermoviscous losses in an implementation of acoustic black holefor sound absorption in air

M. Cervenka et al.

Summary: In this work, a mathematical model of a sound-absorbing structure called the acoustic black hole is proposed. The structure consists of rigid rings separated by narrow fluid-filled cavities, and the wave speed in this structure can theoretically decrease to zero, reducing the reflection coefficient. The numerical results show that the absorption of acoustic energy in this structure is related to resonances in the cavities rather than the slow-down of the acoustic wave. The geometrical details strongly influence the behavior of the structure, indicating the possibility of optimizing it as an efficient absorber of acoustic energy in a wide frequency range.

WAVE MOTION (2022)

添加到收藏夹

Article Acoustics

Broadband and low frequency sound absorption by Sonic black holes with Micro-perforated boundaries

Zhang Xiaoqi et al.

Summary: This paper proposes a Sonic black hole (SBH) sound absorber inside a circular duct in conjunction with the use of Microperforated panels (MPPs) to achieve broadband and low-frequency sound absorption. Through finite element simulations and experimental confirmation, the device is shown to have superior sound absorption performance and potential advantages over traditional noise control devices.

JOURNAL OF SOUND AND VIBRATION (2021)

添加到收藏夹

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)

添加到收藏夹

Article Engineering, Multidisciplinary

Application of the transfer matrix approximation for wave propagation in a metafluid representing an acoustic black hole duct termination

Oriol Guasch et al.

APPLIED MATHEMATICAL MODELLING (2020)

添加到收藏夹

Article Acoustics

Application of fractional order operators to the simulation of ducts with acoustic black hole terminations

John P. Hollkamp et al.

JOURNAL OF SOUND AND VIBRATION (2020)

添加到收藏夹

Article Acoustics

One-dimensional sonic black holes: Exact analytical solution and experiments

Mikhail Mironov et al.

JOURNAL OF SOUND AND VIBRATION (2020)

添加到收藏夹

Article Acoustics

Interpretation of the Acoustic Black Hole effect based on the concept of critical coupling

J. Leng et al.

JOURNAL OF SOUND AND VIBRATION (2020)

添加到收藏夹

Review Acoustics

The acoustic black hole: A review of theory and applications

Adrien Pelat et al.

JOURNAL OF SOUND AND VIBRATION (2020)

添加到收藏夹

Article Acoustics

Perfect Absorption of Sound by Rigidly-Backed High-Porous Materials

Noe Jimenez et al.

ACTA ACUSTICA UNITED WITH ACUSTICA (2018)

添加到收藏夹

Article Acoustics

Transfer matrices to characterize linear and quadratic acoustic black holes in duct terminations

Oriol Guasch et al.

JOURNAL OF SOUND AND VIBRATION (2017)

添加到收藏夹

Article Acoustics

Deterministic and statistical characterization of rigid frame porous materials from impedance tube measurements

M. Niskanen et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2017)

添加到收藏夹

Article Multidisciplinary Sciences

Rainbow-trapping absorbers: Broadband, perfect and asymmetric sound absorption by subwavelength panels for transmission problems

Noe Jimenez et al.

SCIENTIFIC REPORTS (2017)

添加到收藏夹

Article Materials Science, Multidisciplinary

Quasiperfect absorption by subwavelength acoustic panels in transmission using accumulation of resonances due to slow sound

Noe Jimenez et al.

PHYSICAL REVIEW B (2017)

添加到收藏夹

Article Acoustics

Use of slow sound to design perfect and broadband passive sound absorbing materials

J. -P. Groby et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2016)

添加到收藏夹

Article Acoustics

Use of complex frequency plane to design broadband and sub-wavelength absorbers

V. Romero-Garcia et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2016)

添加到收藏夹

Article Multidisciplinary Sciences

Perfect and broadband acoustic absorption by critically coupled sub-wavelength resonators

V. Romero-Garcia et al.

SCIENTIFIC REPORTS (2016)

添加到收藏夹

Article Physics, Applied

The use of slow waves to design simple sound absorbing materials

J. -P. Groby et al.

JOURNAL OF APPLIED PHYSICS (2015)

添加到收藏夹

Article Physics, Applied

Omnidirectional acoustic absorber with a porous core and a metamaterial matching layer

A. S. Elliott et al.

JOURNAL OF APPLIED PHYSICS (2014)

添加到收藏夹

Article Acoustics

Total absorption peak by use of a rigid frame porous layer backed by a rigid multi-irregularities grating

J. -P. Groby et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2010)

添加到收藏夹

Article Acoustics

One-dimensional acoustic waves in retarding structures with propagation velocity tending to zero

MA Mironov et al.

ACOUSTICAL PHYSICS (2002)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.