Article
Engineering, Mechanical
Jingwen Guo, Xin Zhang, Yi Fang, Renhao Qu
Summary: This study introduces an ultra-thin sound-absorbing metasurface for low-frequency sound absorption, which demonstrates excellent absorption properties at 180 Hz and achieves multi-frequency band absorption through multiple resonances, making it a promising option for realistic low-frequency sound attenuation applications.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Physics, Multidisciplinary
Baozhu Cheng, Qiuyu Zeng, Yang Liu, Jiansong Weng, Bin Li, Hong Hou
Summary: This paper proposes a design method for achieving low-frequency broadband noise control using curled acoustic metasurface (CAM). By using a multi-parameter control strategy, bending acoustic metasurface (BAM) units were designed with subwavelength thickness to achieve efficient sound absorption.
Article
Materials Science, Multidisciplinary
Yi-jun Guan, Yong Ge, Hong-xiang Sun, Shou-qi Yuan, Yun Lai, Xiao-jun Liu
Summary: The study introduces an ultra-thin metasurface-based low-frequency sound absorber with optimized bandwidth, achieving near-perfect low-frequency sound absorption mainly through high thermal-viscous loss from artificial Mie resonances. By combining 4 units with different diameters of circular holes, the fractional bandwidth of the absorber can be further enhanced.
FRONTIERS IN MATERIALS
(2021)
Article
Physics, Applied
Xiao Lian, Shengsheng Wang, Maolin Liu, Songhui Nie, Jinfeng Peng, Zhuo Zhou, Jiu Hui Wu
Summary: The study found that the low frequency sound insulation performance of the designed thin acoustic black hole is better than traditional acoustic materials, showing potential applications in low frequency sound insulation.
MODERN PHYSICS LETTERS B
(2021)
Article
Acoustics
Min Li, Jiuhui Wu, Bobo Wu, Fuyin Ma, Chongrui Liu, Xiaoyang Yuan, Yangbin Sun
Summary: This paper reveals a near-zero suppression mechanism of aerodynamic acoustic pressure using the ultra-thin low-frequency broadband lotus-pods-neck Helmholtz resonator (LPNHR) metasurface. The LPNHR design increases the bandwidth by changing the single neck of a Helmholtz resonator (HR) to a lotus-pods multi-layer-hole neck. The LPNHR generates stronger multi-vortexes inside its neck, resulting in decreased impedance and suppressing the shift of sound attenuation to higher frequencies. The experimental results show a significant reduction in sound pressure level on the Ahmed body surface using the LPNHR metasurface.
Article
Multidisciplinary Sciences
K. Mahesh, P. P. Anoop, P. Damodaran, S. Kumar Ranjith, R. S. Mini
Summary: An acoustic metasurface composed of pie-sliced resonator segments is proposed for ultra-low-frequency noise cancellation. Multiple types of sound absorbers with different unit cell designs are fabricated and tested. By manipulating the geometrical features, the absorption performance in the ultra-low-frequency regime can be modified.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Acoustics
Xiao Liang, Haofeng Liang, Jiaming Chu, Zhen Yang, Zhuo Zhou, Nansha Gao, Siwen Zhang, Guojian Zhou, Congfang Hu
Summary: This study proposes a composite structure of a multilayer micro-perforated plate and acoustic black holes to achieve ultra-low and ultra-broad-band sound absorption and full-band sound insulation. The composite structure combines the stable sound absorption effect of the multilayer micro-perforated plate in the full frequency band, the sound insulation effect of the acoustic black hole in the low frequency, and the excellent sound absorption effect in the high frequency, achieving an excellent sound control effect with absorption coefficient greater than 0.8 at 600-3150 Hz and sound transmission loss greater than 50 dB at 100-3150 Hz.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Mechanics
Haibin Zhong, Yongjun Tian, Nansha Gao, Kuan Lu, Jiuhui Wu
Summary: This research introduces a new composite underwater honeycomb-type acoustic metamaterial plate with low-frequency broadband sound insulation and high hydrostatic pressure resistance. The structure, consisting of a thin plate clamped between two layers of honeycomb plate, demonstrates good underwater sound insulation performance and local resonance bandgap formation. The theoretical and experimental validations confirm the effectiveness of the proposed metamaterial in achieving significant sound transmission loss performance.
COMPOSITE STRUCTURES
(2021)
Article
Acoustics
Jung -San Chen, Yu-Ting Chung, Cheng-Yi Wang, Chien-Hao Liu, Chi-Hua Yu, I-Ling Chang, Tzy-Rong Lin
Summary: A novel compact design for an acoustic metasurface containing coplanar arch-like channels (ALC) is proposed in this study. The ALC is compressed within a compact disk-shaped volume with a small thickness for absorbing undesired sound energy at low frequencies in limited-volume circumstances. An impedance-based analytical model is proposed and used for accurately determining the absorption characteristics of arch-like channels. Varied channel widths can effectively lower the operating frequency compared to a uniform cross-section. The use of multiple branches with different width arrangements can create a multi-peak absorption profile and broaden the absorption bandwidth. The proposed structure has great potential for applications in noise abatement.
Article
Materials Science, Multidisciplinary
Ya-jun Xin, Rui-ning Huang, Peng Li, Quan Qian, Qun Yan, Yong-tao Sun, Qian Ding, Yu-jie Huang, Shu-liang Cheng
Summary: This study focuses on the design of labyrinthine acoustic metamaterials and their potential applications in sound insulation and noise reduction. The physical mechanisms behind the transmission valleys and acoustic isolation peaks are analyzed, and an ultra-sparse distribution hypersurface is designed to achieve effective acoustic isolation and noise reduction at a specific frequency.
RESULTS IN PHYSICS
(2023)
Article
Acoustics
Yingli Li, Jiahui Yan, Yonglin Zhang
Summary: This paper presents a multilayer honeycomb membrane-type acoustic metamaterial with an interlayer structure, which can effectively reduce sound energy transmission by varying the eigenmode characteristics of the membrane. The design of interlayer structures can break the bottleneck of ultrathin and lightweight requirements and achieve high sound insulation in a wide frequency range by shifting the transmission loss valley to a higher frequency.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Engineering, Mechanical
Yanni Zhang, Li Cheng
Summary: An ultra-thin meta-absorber design is proposed to achieve broadband low-frequency underwater sound absorption by inserting circular-elastic-plate scatterers (CPSs) into an elastomer matrix. The design enables high and quasi-perfect sound absorption at multiple frequencies and a broad low-frequency range. Experimentally confirmed, this research offers a novel and effective solution for broadband low-frequency underwater sound absorption.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Multidisciplinary Sciences
Ruichen Li, Yutong Jiang, Rongrong Zhu, Yijun Zou, Lian Shen, Bin Zheng
Summary: This study proposes a reverse design method for ultra-thin underwater acoustic metasurfaces for low-frequency broadband using a tandem fully connected deep neural network. The designed metasurfaces show a flat phase variation and almost equal phase shift interval, and the energy loss in the echo direction is greater than 10 dB. This work opens up new possibilities for low-frequency wideband underwater acoustic devices.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Yifan Zhu, Aurelien Merkel, Krupali Donda, Shiwang Fan, Liyun Cao, Badreddine Assouar
Summary: The study introduces the concept of a nonlocal acoustic metasurface absorber using a bridge structure to improve performance, achieving ultrabroadband sound absorption with deep-wavelength thickness. The nonlocality introduces three specific effects, optimizing effective acoustic impedances, shifting Fabry-Perot resonant frequencies, and enhancing coupling effects between adjacent unit cells, contributing to improved bandwidth and efficiency.
Article
Chemistry, Multidisciplinary
Juan Mo, Zongren Peng, Xu Wang
Summary: This paper presents theoretical and numerical studies on the vibrating mechanisms of acoustic micromembranes (A mu Ms) and demonstrates their unique behavior in terms of sound insulation. The results provide a theoretical foundation for designing large-scale, high-insulation assemblies of A mu Ms.
APPLIED SCIENCES-BASEL
(2022)
Article
Acoustics
Lingzhi Huang, Yong Xiao, Jihong Wen, Hao Zhang, Xisen Wen
JOURNAL OF SOUND AND VIBRATION
(2018)
Article
Acoustics
Haibin Yang, Yong Xiao, Honggang Zhao, Jie Zhong, Jihong Wen
JOURNAL OF SOUND AND VIBRATION
(2019)
Article
Physics, Applied
Fei Wu, Yong Xiao, Dianlong Yu, Honggang Zhao, Yang Wang, Jihong Wen
APPLIED PHYSICS LETTERS
(2019)
Article
Acoustics
Shengbing Chen, Yubao Song, Hao Zhang
SHOCK AND VIBRATION
(2019)
Article
Mechanics
Jiajia Guo, Yong Xiao, Shufeng Zhang, Jihong Wen
COMPOSITE STRUCTURES
(2019)
Article
Physics, Multidisciplinary
Jiajia Guo, Jianzhi Cao, Yong Xiao, Huijie Shen, Jihong Wen
Article
Physics, Applied
Hao Zhang, Shengbing Chen, Zongzheng Liu, Yubao Song, Yong Xiao
APPLIED PHYSICS EXPRESS
(2020)
Article
Acoustics
Yong Xiao, Jihong Wen
JOURNAL OF SOUND AND VIBRATION
(2020)
Article
Engineering, Mechanical
Yong Xiao, Jianzhi Cao, Shuaixing Wang, Jiajia Guo, Jihong Wena, Hao Zhang
Summary: Recent studies have shown the promising applications of plate-type metastructures in low-frequency sound insulation, addressing key issues such as efficient prediction of sound transmission loss (STL), understanding unusual STL behavior, and designing parameters for optimal STL. Analysis of dynamic surface mass density and parametric analysis provide insights into predicting and optimizing the sound insulation performance of metastructures. Experimental validation of design guidelines offers practical guidance for the design of sound insulation metastructures.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Physics, Applied
Shuaixing Wang, Yong Xiao, Jiajia Guo, Hao Zhang, Jihong Wen
Summary: A composite acoustic metamaterial is proposed, consisting of double layer metamaterial plates lined with porous material, which can produce very high diffuse field sound transmission loss beyond the mass law. The material has promising applications in noise control engineering due to its simple construction, light weight, and thinness. Measurements show excellent diffuse field sound transmission loss at broadband low frequencies.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Mechanical
Yong Xiao, Shuaixing Wang, Yongqiang Li, Jihong Wen
Summary: This work aims to develop efficient formulas for bandgap estimation and design of metastructures to control vibration and noise of mechanical structures. The closed-form formulas developed can accurately estimate bandgaps, design improved bandgaps, and their broad applicability is numerically verified in various beam-type metastructures with different scales.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Engineering, Mechanical
Yongqiang Li, Yong Xiao, Jiajia Guo, Zhijun Zhu, Jihong Wen
Summary: In this study, we proposed a single-phase metabeam with flexible tunability of multi-polarization modes, achieved through the design of resonators and exploitation of bandgap coupling effects. The proposed metabeam demonstrated significant three-directional vibration suppression in a broadband frequency range, even with a small added resonator weight.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Mechanical
Jiajia Guo, Yong Xiao, Heng Ren, Huimin Chen, Dianlong Yu, Jihong Wen
Summary: Lattice truss-core sandwich plates have gained attention for their mechanical properties and multifunctionality, but their lightweight feature hampers low-frequency sound insulation. To address this, a perforated faceplate is introduced to utilize the sandwich core as an acoustic cavity, creating a double-panel metastructure with a homogeneous plate. A semi-analytical method combining effective medium theory and dynamic homogenization is developed for efficient sound transmission loss (STL) prediction. Numerical and experimental results demonstrate that the double-panel metastructure exhibits remarkable sound insulation performance within a broadband low-frequency range.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)