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Article
Materials Science, Multidisciplinary
Yuanhao Xiong et al.
Summary: This article presents a design method for a periodic elastic metamaterial plate based on the locally resonant band-gap mechanism. The band-gap characteristics of the plate are calculated using the finite element method and validated through spectral element analysis and vibration experiments. An effective asymptotic optimization method is used to optimize the band-gap characteristics, aiming at specific frequency bands to achieve superior vibration reduction capacity.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Review
Mechanics
Ganesh U. Patil et al.
Summary: Phononic materials are arranged building blocks that can manipulate mechanical waves with potential applications in various disciplines. Moving beyond linear materials, research has shifted towards exploring nonlinearity and its role in enabling rich nonlinear wave responses in phononic materials. By investigating the origins and effects of nonlinearity, the field has evolved and faced new challenges and opportunities for future advancement.
Article
Physics, Applied
Rui Yang et al.
Summary: This paper proposes a hybrid acoustic cloaking technology composed of binary splitting metasurfaces (BSMs) and near-zero-index metamaterials (NZIMs). The BSMs form the cloaking effect by diffracting the incident waves around the obstacle, while NZIMs transfer the waves to and control the emergent waves from the BSMs. The hybrid cloaking is simple in structure and can achieve better efficiency through an optimization method.
APPLIED PHYSICS LETTERS
(2022)
Article
Acoustics
Huihuang Bao et al.
Summary: The study proposes a locally resonant metamaterial beam to reduce low-frequency vibrations, and enhancing vibration suppression performance by increasing the number of units, damping ratio, mass, and stiffness.
JOURNAL OF VIBRATION AND CONTROL
(2022)
Article
Physics, Applied
Fuyin Ma et al.
Summary: This tutorial provides a comprehensive overview of the basic principles and traditional methods of acoustic focusing and imaging. It further discusses the progress in sub-wavelength focusing and super-resolution imaging achieved through artificial acoustic devices such as phononic crystals and acoustic metamaterials. The tutorial also explores the potential future trends and practical application prospects in this field.
JOURNAL OF APPLIED PHYSICS
(2022)
Review
Materials Science, Multidisciplinary
Srajan Dalela et al.
Summary: Mechanical metamaterials exhibit superior mechanical properties, with the ability to optimize unit-cell arrays for different frequency ranges and have wide applications in vibration control.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Mechanical
Yuqiang Gao et al.
Summary: This paper proposes a nonlocal active metamaterial with feedback control. The tunable bandgap and negative effective stiffness of a symmetric feedback metamaterial are discussed. The bandgap is significantly broadened by symmetric displacement feedback control, and the vibration amplitude can be rapidly attenuated by combined velocity feedback control. In an asymmetric feedback metamaterial, the spatial symmetries of the control force are broken, allowing for the achievement of non-Hermitian skin effects. The modes of localization are determined by topological properties with winding number, which can be changed by the asymmetrical feedback control gain. The nonlocal active metamaterials can achieve nonreciprocal wave propagation and directional amplification across a broad frequency range. Results from numerical simulations confirm the nonreciprocal wave propagation and directional amplification characteristics of this metamaterial. The nonlocal active metamaterials introduced in this paper can achieve superior bandgap tuning as well as nonreciprocal wave propagation and directional amplification. The switching of feedback control signals allows for function switching between bandgap control and nonreciprocity.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Physics, Applied
Zhenyu Chen et al.
Summary: This study investigates the propagation of robust large-area elastic transverse waves in an actively tunable membrane-type acoustic metamaterial. The research focuses on designing a waveguide with multiple degrees of freedom to control the width of the interface mode. By employing a finite element model, the study exhibits topologically protected interface states with tunable degrees of freedom. Furthermore, the study examines the transmission performance of large-area transverse waves at sharp corners.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Mechanical
Zexin Chen et al.
Summary: By designing and prototyping a metamaterial MRE isolator with controllable vibration bandgaps, the vibration attenuation capacity can be improved. The mechanism of the formation of vibration bandgaps was analyzed using the mass-spring model, and the equivalent negative stiffness of the metamaterial MRE isolator was studied. The evaluation experiments demonstrate that the new isolator possesses controllable bandgaps and provides improved vibration isolation performance.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Review
Physics, Multidisciplinary
Geon Lee et al.
Summary: Mechanical metamaterials and phononic crystals can localize, focus, and guide elastic or acoustic waves in various ways. These man-made structures allow for more efficient collection of energy and have a wide range of potential applications in renewable energy transformation.
COMMUNICATIONS PHYSICS
(2022)
Article
Mechanics
Zhimiao Yan et al.
Summary: This paper proposes an effective dynamic method to estimate the band-gap edge frequencies of local resonant elastic metamaterials. Through the study of four representative resonators, it is found that the elastic metamaterial with necked resonators exhibits superior low-frequency and broadband performance.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Xin Fang et al.
Summary: This study systematically investigates the vibration and sound radiation of nonlinear acoustic metamaterials (NAMs) and proposes two design strategies for achieving ultra-low and broadband vibration and sound radiation suppression. Furthermore, the study clarifies the mechanisms underlying these characteristics.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Mechanical
Pengcheng Zhao et al.
Summary: This study established a dynamic model of a 3D chiral mechanical metamaterial to analyze the band structure and transmission response under different configurations. The results show that chirality can convert longitudinal waves into transverse waves, leading to vibration attenuation and the ability to predict band gaps.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Review
Physics, Multidisciplinary
Tianxi Jiang et al.
Summary: This review introduces the advances in spatial information coding with artificially engineered structures for acoustic and elastic wave sensing. It covers enhanced spatial wave sensing with metastructures and computational sensing approaches that combine spatial transmission coding structures with reconstruction algorithms. The review also discusses representative progress of computational sensing with metastructures and random scattering media in audio source separation, ultrasonic imaging, and vibration information identification.
FRONTIERS IN PHYSICS
(2022)
Article
Engineering, Mechanical
Pengcheng Zhao et al.
Summary: This paper investigates the dynamic properties of a 3D chiral mechanical metamaterial, showing that the isotactic configuration converts longitudinal waves into transverse waves due to chirality, leading to vibration attenuation independent of band gaps. Band gaps appear in the syndiotactic configuration's band structures, and the vibration mode of ligaments can be used to predict band gaps. The study also demonstrates the potential for practical applications of vibration suppression using gradient and programmable design.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Guobiao Hu et al.
Summary: This paper investigates a technique for broadband vibration suppression using a graded metamaterial beam, proposes a design strategy and defines three figures of merit to evaluate its performance. A parametric study reveals the effects of frequency spacing and damping ratio on the vibration suppression performance, and shows that by tuning these parameters, a significant increase in attenuation bandwidth can be achieved.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Physics, Applied
Nan Gao et al.
Summary: This study focuses on the design of tunable phononic crystal plates with Y-shaped prisms to support valley transport of elastic waves based on an analogy of the quantum valley Hall effect, breaking mirror symmetry to open new bandgaps. By designing interfaces between ETIs with different symmetry-broken geometries, topologically protected edge states are supported. A reconfigurable device for elastic wave channel switching and beam splitting is demonstrated both numerically and experimentally, showing potential for practical applications in broadband elastic wave transmission.
APPLIED PHYSICS LETTERS
(2021)
Review
Materials Science, Multidisciplinary
Xujin Yuan et al.
Summary: Metamaterials, utilizing unconventional properties achieved through microarchitectural designs, have become a research hotspot in electromagnetic, acoustic, mechanical, and physics fields. However, the challenge lies in integrating mechanical features and specific functions. The trend is towards incorporating multifunctional designs into single integrated structures, requiring mechanical-driven designs and structural level innovations for future advancements.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2021)
Article
Engineering, Mechanical
Hui-Kai Zhang et al.
Summary: This paper proposes a soft metamaterial with chiral and hierarchical structures, which can easily regulate its elastic wave bandgaps through postbuckling-induced evolution. The postbuckling behavior of chiral hierarchical structures is investigated and analyzed for their stress-strain curves, phase diagram of uniaxial critical compressive strength, and tunable elastic wave bandgaps.
EXTREME MECHANICS LETTERS
(2021)
Article
Mechanics
Yongqing Cai et al.
Summary: The paper proposes a lightweight, thin-plate elastic metamaterial with transverse, longitudinal, and torsional wave polarization band gaps, achieved through ingenious microstructure design, enabling selective suppression of elastic waves exhibiting different polarization forms. This elastic metamaterial structure provides a practical implementation scheme for the separation and manipulation of elastic waves in different polarization forms in solid structures.
COMPOSITE STRUCTURES
(2021)
Article
Physics, Applied
Bryan Chem et al.
Summary: This study introduces simple and hierarchical resonant metamaterials made of soft polydimethylsiloxane rubber and removable steel insets, which are able to produce wider bandgaps compared to most resonant materials of the same class and outperform structures with a stiff epoxy matrix. The study highlights the role of matrix compliance in widening bandgaps and shifting vibrational modes, leading to an overall increase in bandgap width. Additionally, viscous dissipation, friction, and geometrical inaccuracies common in additive manufacturing were found to shape transmission loss curves and associated bandgaps to varying degrees.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Chunbo Lan et al.
Summary: This paper explores the use of topological metamaterials for vibration energy harvesting, utilizing the interface state feature to achieve low-frequency vibration energy collection. By establishing governing equations and dispersion relations, the mechanism and advantages of the interface mode are analyzed, and stiffness tuning and defect enhancement methods are proposed to further improve energy harvesting performance.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Multidisciplinary Sciences
Muhammad et al.
Summary: This study presents a novel proposal for 3-D monolithic phononic metastructures with the capability to induce low frequency ultrawide three-dimensional bandgaps. The research methodology, modeling, and design strategy provide a foundation for the development of novel meta-devices to control vibration and noises over a broadband frequency range. Experimental validation shows the presence of an ultrawide vibration attenuation zone over a broadband frequency spectrum.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Hai-Fei Zhu et al.
Summary: A novel two-dimensional tunable phononic crystal plate was studied, with bandgap characteristics calculated and low-frequency bandgap mechanism discussed. The influence of geometric parameters on bandgap characteristics was analyzed, along with studying bandgap adjustability under prestretch strain. Results showed lower bandgap starting frequency and wider bandwidth compared to traditional structures, with the ability to actively control low-frequency bandgap in real-time by applying prestretch strain.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Applied
Hongqing Dai et al.
Summary: Acoustic topological insulators enable non-contact particle manipulations, such as microparticle trapping and separation. Based on the SSH model, we can separate particles of the same size and density.
APPLIED PHYSICS LETTERS
(2021)
Article
Mechanics
Chenyang Xi et al.
Summary: A four-bar inertial amplification mechanism was proposed to enhance the low-frequency vibration reduction capability of corrugated-core sandwich panels (CSPs). Numerical studies showed that CSPs with this mechanism attached can achieve wide bandgaps in the low-frequency range, providing broader band attenuation compared to CSPs with local resonators attached.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
Hao Li et al.
Summary: This study proposes a strategy to achieve broadband low-frequency vibration suppression by combining the design concepts of locally resonant metamaterials and lightweight lattice-truss-core sandwich structures. By designing meta-lattice sandwich panels and using 3D printing technology, remarkable vibration suppression within the low-frequency range is successfully achieved.
COMPOSITES PART B-ENGINEERING
(2021)
Editorial Material
Materials Science, Multidisciplinary
Daining Fang et al.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2021)
Article
Engineering, Mechanical
Miao Yu et al.
Summary: The combination of linear and nonlinear elastic metamaterials can introduce new ways to explore wave suppression with improved robustness, efficiency, and bandwidth. This combinational design offers both bandgaps and chaotic bands, enhancing the wave suppression effect compared to single type metamaterials.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Physics, Applied
Fuyin Ma et al.
Summary: Using well-designed acoustic metamaterial structures can achieve many advanced physical properties, with thin-walled structures attracting attention from researchers and engineers in various specialized fields. This tutorial systematically introduced the structural design methods, acoustic/elastic wave attenuation and regulation principles, and engineering applications of thin-walled acoustic metamaterials.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Engineering, Multidisciplinary
Zhang Peng et al.
Summary: This study proposed three-dimensional novel hybrid lattice structures with exceptional mechanical properties and energy absorbing performances for potential mechanical applications. Experimental and finite element simulation comparisons were performed to study the deformation process and failure mechanisms of the hybrid metamaterials. Results showed that the energy absorption efficiency of the novel hybrid lattice structures can be tailored by altering the types or sizes of basic unit cells.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Review
Mechanics
Yan-Feng Wang et al.
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(2020)
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Long Li et al.
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(2020)
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INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2020)
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Acoustics
Xiyue An et al.
JOURNAL OF SOUND AND VIBRATION
(2020)
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Multidisciplinary Sciences
Tianxi Jiang et al.
NATURE COMMUNICATIONS
(2020)
Article
Engineering, Mechanical
Xu Yin et al.
EXTREME MECHANICS LETTERS
(2020)
Article
Engineering, Mechanical
Kai Wang et al.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2020)
Article
Acoustics
Chong Li et al.
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(2020)
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Xiaojun Tan et al.
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(2020)
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Muhammad et al.
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(2020)
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Quan Zhang et al.
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Yiwei Xia et al.
APPLIED PHYSICS LETTERS
(2019)
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Penglin Gao et al.
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(2019)
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Zhao JinFeng et al.
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Review
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