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Journal articles on the topic 'Acoustic-elastic coupling'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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1

Chaplain, Gregory J., Dan Moore, Ian Hooper, Alastair Hibbins, John Sambles, and Timothy Starkey. "Beyond-nearest-neighbour metamaterials." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A156. http://dx.doi.org/10.1121/10.0023108.

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Engineering the dispersion of acoustic or elastic waves using coupling terms that spatially reach beyond the immediate local environment, or unit cell, is an “emerging topic” in Metamaterial design. In this talk, we present experimental studies in acoustic and elastic systems that realize beyond-nearest-neighbour coupling to introduce dispersion relations with extrema within the first Brilloun Zone. In acoustics, we use mixed waveguide-surfacewave coupling, while in elasticity we develop an elastic scaffold (made from meccano) with reconfigurable coupling elements and demonstrate the effects o

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2

Shin, Ye Jeong, Hong Min Seung, and Joo Hwan Oh. "Fluid-like elastic metasurface." Applied Physics Letters 122, no. 10 (2023): 101701. http://dx.doi.org/10.1063/5.0139336.

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What makes elastic waves different from other waves is the existence of various wave modes and coupling between these modes. Accordingly, the manipulation of elastic waves suffers from many limitations due to mode coupling, which is an inherent complex physical property of elastic waves. In this study, we propose fluid-like elastic metasurfaces that act as an acoustic (fluid) surface to perfectly eliminate mode coupling. Because longitudinal and shear waves are decoupled, only reflected longitudinal (or shear) waves exist when longitudinal (or shear) waves are incident. Using a strip-type unit

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3

Cui, Huaifeng, Rufu Hu, and Nan Chen. "Modelling and analysis of acoustic field in a rectangular enclosure bounded by elastic plates under the excitation of different point force." Journal of Low Frequency Noise, Vibration and Active Control 36, no. 1 (2017): 43–55. http://dx.doi.org/10.1177/0263092317693488.

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The coupled acoustic field of fully elastic plate model is described by the modal analysis method. The acoustic potential energy resonance peaks of the fully elastic plate model are significantly more than that of the one elastic plate model due to the influence of the vibration of multi elastic plates. The acoustic field characteristics of the fully elastic plate model are analyzed when the primary excitation source is applied on the different elastic plates. The results show that the coupled acoustic field of the fully elastic plate model is dominated by the structural mode of the elastic pl

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4

Gao, Longfei, and David Keyes. "Explicit coupling of acoustic and elastic wave propagation in finite-difference simulations." GEOPHYSICS 85, no. 5 (2020): T293—T308. http://dx.doi.org/10.1190/geo2019-0566.1.

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We present a mechanism to explicitly couple the finite-difference discretizations of 2D acoustic and isotropic elastic-wave systems that are separated by straight interfaces. Such coupled simulations allow for the application of the elastic model to geological regions that are of special interest for seismic exploration studies (e.g., the areas surrounding salt bodies), with the computationally more tractable acoustic model still being applied in the background regions. Specifically, the acoustic wave system is expressed in terms of velocity and pressure while the elastic wave system is expres

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Dong, Kaiyuan, Yiwen Lv, Peng Wang, Wei Cheng, and Han Li. "Acoustic properties of underwater acoustic metamaterials based on multi-physical field coupling model." Journal of Physics: Conference Series 2713, no. 1 (2024): 012006. http://dx.doi.org/10.1088/1742-6596/2713/1/012006.

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Abstract In this paper, according to the internal structure of underwater acoustic metamaterial, a multi-physical field coupling model of underwater acoustic metamaterial is established by using finite element analysis. Based on the model, the influence of typical underwater acoustic metamaterial structure and material parameters on sound absorption performance is studied. The results show that increasing the height or radius of the local resonance mass unit in the metamaterial is beneficial to improve the low frequency sound absorption performance. With the increase of the distance between ma

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6

Norris, Andrew N., and Douglas A. Rebinsky. "Acoustic coupling to membrane waves on elastic shells." Journal of the Acoustical Society of America 95, no. 4 (1994): 1809–29. http://dx.doi.org/10.1121/1.408688.

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7

Yoon, Gil Ho. "Unified Analysis with Mixed Finite Element Formulation for Acoustic-Porous-Structure Multiphysics System." Journal of Computational Acoustics 23, no. 01 (2015): 1550002. http://dx.doi.org/10.1142/s0218396x15500022.

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This research aims to develop a novel unified analysis method for an acoustic-porous-structure multiphysics interaction system when the porous medium is modeled by the empirical Delany–Bazley formulation. Multiphysics analysis of acoustic structure interaction is commonly performed by solving the linear elasticity and Helmholtz equations separately and enforcing a mutual coupling boundary condition. If the pressure attenuation from a porous material is additionally considered, the multiphysics analysis becomes highly intricate, because three different media (acoustic, porous, and elastic struc

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8

MAR-OR, ASSAF, and DAN GIVOLI. "A FINITE ELEMENT STRUCTURAL-ACOUSTIC MODEL OF COUPLED MEMBRANES." Journal of Computational Acoustics 12, no. 04 (2004): 605–18. http://dx.doi.org/10.1142/s0218396x04002407.

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A simple model displaying structural-acoustic behavior is considered. The model comprises of two parallel infinitely-long flat membranes lying on elastic foundations and the acoustic medium separating them. The structural-acoustic coupling manifests itself in that a vibrational excitation of one of the membranes triggers vibrations in the other. The governing equations are stated, and the associated finite element formulation is constructed. The model is then analyzed numerically and its vibrational properties are investigated. The proposed model is especially simple, being two-dimensional and

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9

Hsiao, Fu-Li, Ying-Pin Tsai, Wei-Shan Chang, Chien-Chang Chiu, Bor-Shyh Lin, and Chi-Tsung Chiang. "Photo-Elastic Enhanced Optomechanic One Dimensional Phoxonic Fishbone Nanobeam." Crystals 12, no. 7 (2022): 890. http://dx.doi.org/10.3390/cryst12070890.

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We investigated the strength of acousto-optical (AO) interaction in one-dimensional fishbone silicon nanobeam computationally. The structure can generate phononic and photonic band gaps simultaneously. We use defect cavity optical mode and slow light mode to interact with acoustic defect modes. The AO coupling rates are obtained by adding the optical frequency shifts, which result from photo-elastic effect and moving-boundary effect disturbances. The AO coupling rates are strongly dependent on the overlap of acoustic and optical mode distribution. The strength of AO interaction can be enhanced

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10

Jiao, Ren Qiang, Jian Run Zhang, and Dong Lu. "Research on Acoustic Radiation Characteristic for Cylindrical Structure with Elastic Plate Cap in Mid-Frequency Region." Key Engineering Materials 656-657 (July 2015): 706–11. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.706.

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An advanced method named hybrid FE-SEA method was introduced to study the acoustic radiation characteristic for cylindrical structure with elastic plate cap in medium-frequency region. This method consists of the finite element method (FEM) for low-frequency region and the statistical energy analysis (SEA) for high-frequency region, which can be employed to deal with the problem of acoustic radiation result from model coupling of elastic connection effectively. According to the FE-SEA theory, a hybrid model of cylindrical structure with elastic plate cap was built to validated whether the hybr

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11

Di Bartolo, Leandro, Rosário Romão Manhisse, and Cleberson Dors. "Efficient acoustic-elastic FD coupling method for anisotropic media." Journal of Applied Geophysics 174 (March 2020): 103934. http://dx.doi.org/10.1016/j.jappgeo.2019.103934.

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12

Du, Xiaofei, Xin Liao, Qidi Fu, and Chaoyong Zong. "Vibro-Acoustic Analysis of Rectangular Plate-Cavity Parallelepiped Coupling System Embedded with 2D Acoustic Black Holes." Applied Sciences 12, no. 9 (2022): 4097. http://dx.doi.org/10.3390/app12094097.

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An acoustic black hole (ABH) has the ability to concentrate and manipulate flexural waves, which can be used for structural vibration suppression and noise attenuation. In this paper, a 2D ABH rectangular plate is designed and a 2D ABH plate-cavity coupling system is constructed using the 2D ABH plate and five rectangular elastic plates of uniform thickness. Series of vibro-acoustic FEM models of the plate-cavity parallelepiped coupling system embedded with 2D ABHs are established, and the vibro-acoustic coupling simulation is conducted to analyze the effects of ABHs on the coupling modes, vib

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13

Park, Jeonghoon, Dongwoo Lee, and Junsuk Rho. "Recent Advances in Non-Traditional Elastic Wave Manipulation by Macroscopic Artificial Structures." Applied Sciences 10, no. 2 (2020): 547. http://dx.doi.org/10.3390/app10020547.

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Metamaterials are composed of arrays of subwavelength-sized artificial structures; these architectures give rise to novel characteristics that can be exploited to manipulate electromagnetic waves and acoustic waves. They have been also used to manipulate elastic waves, but such waves have a coupling property, so metamaterials for elastic waves uses a different method than for electromagnetic and acoustic waves. Since researches on this type of metamaterials is sparse, this paper reviews studies that used elastic materials to manipulate elastic waves, and introduces applications using extraordi

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14

Zhou, Qi Zheng, De Shi Wang, and Shu Yang. "Acoustic and Vibration Characteristics of Finite Cylindrical Shell-Circular Plate Based on Lagrange Equations." Applied Mechanics and Materials 302 (February 2013): 401–5. http://dx.doi.org/10.4028/www.scientific.net/amm.302.401.

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An analysis based on Lagrange equations was presented for acoustic and vibration characteristics of finite cylindrical shell-circular plate underwater. The boundary conditions and coupling conditions between the shell and plate expressed using springs, the model of finite shell with circular plate was set up. Considering the elastic potential energy in springs and the work due to fluid loading, the vibro-acoustic equations of finite cylinder with circular plate under excitation were established by Lagrange equations. The influences of boundary conditions and coupling conditions to the acoustic

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15

Jin, Zhong Kun, and Tong Qing Wang. "Calculation on Acoustic Scattering of Viscoelastic Layer Coupling with Elastic Shell." Applied Mechanics and Materials 248 (December 2012): 107–13. http://dx.doi.org/10.4028/www.scientific.net/amm.248.107.

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This paper is devoted to numerical research on coupling between elastic spherical shell and the coated viscoelastic layer as well as the scattering of incident plane wave by the double-layer spherical shell. The scattering sound field is solved based on impedance boundary condition by boundary element method (BEM). Dynamic finite element method (FEM) is used to numerically simulate the acoustic impedance boundary condition which involved in the coupled spherical shell. Impedance distribution for elastic spherical shell and elastic spherical shell coated viscoelastic layer is calculated and its

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16

POBLET-PUIG, J., and A. RODRÍGUEZ-FERRAN. "THE BLOCK GAUSS–SEIDEL METHOD IN SOUND TRANSMISSION PROBLEMS." Journal of Computational Acoustics 18, no. 01 (2010): 13–30. http://dx.doi.org/10.1142/s0218396x10004036.

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Sound transmission through partitions can be modeled as an acoustic fluid–elastic structure interaction problem. The block Gauss–Seidel iterative method is used in order to solve the finite element linear system of equations. The blocks are defined, respecting the fluid and structural domains. The convergence criterion is analyzed and interpreted in physical terms by means of simple one-dimensional problems. This analysis highlights the negative influence on the convergence of a strong degree of coupling between the acoustic domains and the structure. A selective coupling strategy has been dev

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17

HU, Zhi, Gongmin LIU, Xiaochen ZHAO, and Zhenfei ZANG. "Study of the acoustic transmission characteristics of a pipe opening with a baffle considering structural elasticity." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 8 (2024): 3282–91. http://dx.doi.org/10.3397/in_2024_3304.

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Noise can radiate to the external environment through pipe openings. The acoustic transmission characteristics of the pipe openings greatly affect the efficiency of sound radiation. In fluid-filled elastic pipelines, the sound radiation is significantly influenced by the coupling between the fluid and the elastic structure. The elastic structure studied in this paper includes the pipe wall, as well as the baffle attached to it. Waveguide analysis of fluid-filled elastic pipelines shows that the coupling results in the presence of several types of propagating waves within the pipeline, even bel

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18

Liu, Jinpeng, Zheng Zhu, Yongqiang Ji, Ziyang Chen, Chao Zhang, and Dejiang Shang. "Prediction of Sound Scattering from Deep-Sea Targets Based on Equivalence of Directional Point Sources." Applied Sciences 11, no. 11 (2021): 5160. http://dx.doi.org/10.3390/app11115160.

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A fast prediction method is proposed for calculating the sound scattering of targets in the deep-sea acoustic channel by equating the sound scattering field of a complex elastic target to the acoustic field excited by a directional point source. In deep-sea conditions, the effects of the sea surface on the impedance characteristics of the elastic target surface can be ignored. Through the finite element simulation of the acoustic scattering of the target in the free field, the sound scattering field is equated to the radiation field of a directional point source. Subsequently, the point source

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19

Metiri, W., F. Hadjoub, A. Doghmane, and Z. Hadjoub. "Coupling liquids acoustic velocity effects on elastic metallic bioglass properties." Physics Procedia 2, no. 3 (2009): 1421–24. http://dx.doi.org/10.1016/j.phpro.2009.11.111.

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20

Čermák, Petr, Astrid Schneidewind, Benqiong Liu, et al. "Magnetoelastic hybrid excitations in CeAuAl3." Proceedings of the National Academy of Sciences 116, no. 14 (2019): 6695–700. http://dx.doi.org/10.1073/pnas.1819664116.

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Nearly a century of research has established the Born–Oppenheimer approximation as a cornerstone of condensed-matter systems, stating that the motion of the atomic nuclei and electrons may be treated separately. Interactions beyond the Born–Oppenheimer approximation are at the heart of magneto-elastic functionalities and instabilities. We report comprehensive neutron spectroscopy and ab initio phonon calculations of the coupling between phonons, CEF-split localized 4f electron states, and conduction electrons in the paramagnetic regime ofCeAuAl3, an archetypal Kondo lattice compound. We identi

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21

Viswanathan, K. S. "Elastic and gyrotropic anomalies and acoustic activity in lead germanate." Canadian Journal of Physics 72, no. 9-10 (1994): 568–73. http://dx.doi.org/10.1139/p94-072.

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The paper discusses elastic and gyrotropic anomalies as well as the acoustic activity of lead germanate during the phase transition from the space group C3h to C3. Expressions are derived for all the anomalies of the elastic constants, and relations among them have been established. We show that the elastic constants C11, C33, C12, and C13 suffer a dip at the transition temperature, in agreement with experimental results. Several invariants involving the order parameter, strain variables, and their derivatives are constructed and from these the contribution to the coupling energy of the gyrotr

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22

BU, GANG, DAUMANTAS CIPLYS, MICHAEL S. SHUR, LEO J. SCHOWALTER, SANDRA B. SCHUJMAN, and REMIS GASKA. "LEAKY SURFACE ACOUSTIC WAVES IN SINGLE-CRYSTAL AlN SUBSTRATE." International Journal of High Speed Electronics and Systems 14, no. 03 (2004): 837–46. http://dx.doi.org/10.1142/s0129156404002922.

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We report on the velocity V and the electromechanical coupling coefficient K2 of the first and the second leaky surface acoustic waves in various propagation directions in the a-plane AlN single-crystal. For c-propagation direction, the second leaky wave exhibited the velocity of 11016 m/s and K2 of 0.45%. For this direction, the temperature coefficient of frequency was found to be -30 ppm/°C. A near match of the velocities of the plane and leaky waves in the a-plane AlN allowed us to establish analytical relationships between the piezoelectric and elastic constants. A full set of elastic and

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23

Wang, Xin-Zhong, Dong Wang, Zhe-Wei Wang, et al. "Mechanical properties and acoustic emission characteristics of granite under thermo-hydro-mechanical coupling." Thermal Science 25, no. 6 Part B (2021): 4585–96. http://dx.doi.org/10.2298/tsci2106585w.

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Exploring the mechanical properties and thermal cracking characteristics of rock under thermo-hydro-mechanical coupling in detail is of great importance for the safe excavation and stability of deep rock engineering. The mechanical properties and thermal cracking characteristics of granite under burial depths of 1000 m (confining pressure of 25 MPa) and 1600 m (confining pressure of 40 MPa) at a temperature of 110?C and a pore water pressure of 10 MPa were studied. The results show that the elastic modulus decreases with increasing temperature under a confining pressure of 25 MPa, whereas unde

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24

Shi, Dongyan, Wenhui Ren, Hong Zhang, Gai Liu, and Qingshan Wang. "Vibro-acoustic coupling characteristics of orthotropic L-shaped plate–cavity coupling system." Journal of Low Frequency Noise, Vibration and Active Control 39, no. 4 (2019): 1102–26. http://dx.doi.org/10.1177/1461348419860630.

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The research object of this paper is the L-shaped plate–cavity coupling system established by a cuboid acoustic cavity with rigid-wall or impedance-wall and L-shaped plate with numerous elastic boundary conditions in view of the Fourier series method. The main research content of this paper is the vibro-acoustic coupling characteristics. In this paper, the displacements admissible functions of the L-shaped plate are generally set as the sum of two cosines’ product and two polynomials. Sound pressure admissible functions of the cuboid acoustic cavity can be considered as the sum of three cosine

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25

Soares, D., and L. Godinho. "An Overview of Recent Advances in the Iterative Analysis of Coupled Models for Wave Propagation." Journal of Applied Mathematics 2014 (2014): 1–21. http://dx.doi.org/10.1155/2014/426283.

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Wave propagation problems can be solved using a variety of methods. However, in many cases, the joint use of different numerical procedures to model different parts of the problem may be advisable and strategies to perform the coupling between them must be developed. Many works have been published on this subject, addressing the case of electromagnetic, acoustic, or elastic waves and making use of different strategies to perform this coupling. Both direct and iterative approaches can be used, and they may exhibit specific advantages and disadvantages. This work focuses on the use of iterative

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26

Beldi, M., and Z. Lamia. "Calculation of Coupled Modes for Vibro-Acoustic Problems." Advanced Materials Research 488-489 (March 2012): 1691–96. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.1691.

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A new numerical method for the study of elasto-acoustic structures coupled with fluid-filled cavities has been developed. This method essentially consists of solving the eigenvalue problem for the determination of elasto-acoustic modes. The Numerical methods commonly used for its resolution is based on the mass coupling. However, this approach requires for it is resolution the inversion of a singular matrix, "the stiffness matrix of the fluid". We then propose a new numerical method based on stiffness coupling by using modal superposition techniques through a change of variable which shows a s

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27

Li, Hong Qiu, and Guo Ping Chen. "Sound Transmission in Dual-Coupling System of Elastic Plate and Acoustic Cavity Based on Modal Superposition Method." Applied Mechanics and Materials 475-476 (December 2013): 1474–78. http://dx.doi.org/10.4028/www.scientific.net/amm.475-476.1474.

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This paper presents a study on the dual-coupling characteristics between elastic plate and acoustic cavity. Modal superposition method was employed to analyze sound transmission in the plate-cavity-plate system and cavity-plate-cavity system. Impedance and mobility methods were also adopted which were easy to investigate the characteristics between the structural and acoustic systems. The expression of sound transmission between plate-cavity-plate system and cavity-plate-cavity system were given.

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28

Rebinsky, Douglas A., and Andrew N. Norris. "Benchmarking an acoustic coupling theory for elastic shells of arbitrary shape." Journal of the Acoustical Society of America 98, no. 4 (1995): 2368–71. http://dx.doi.org/10.1121/1.413284.

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29

LIU, Shuhan, Raphaël PILE, Joséphine PEROT-LE GAL, Robin PETIT, and Olivier THOMAS. "A transfer matrix model to predict acoustic attenuation of earplug filters made up of elastic film and air cavity." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 4 (2024): 7967–76. http://dx.doi.org/10.3397/in_2024_4031.

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The sound attenuation of earplugs, commonly used for noise protection, can be improved by adding acoustic filters. However, the effect of acoustic filters featuring an elastic film and cylindrical air cavities on sound attenuation needs to be better understood. This study seeks to predict acoustic attenuation of an elastic film filter via the development of an analytical model. Its advantage, as compared to numerical simulations, is to offer quicker solutions and a more profound comprehension of each physical parameter's impact. The total acoustic transfer matrix of the filter has been establi

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30

Goldsberry, Benjamin M., Samuel P. Wallen, and Michael R. Haberman. "Nonreciprocal acoustic scattering from an elastic plate with spatiotemporally modulated material properties." Journal of the Acoustical Society of America 151, no. 4 (2022): A156. http://dx.doi.org/10.1121/10.0010958.

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Acoustic and elastic metamaterials with space- and time-dependent material properties have received great attention recently as a means to realize nonreciprocal wave propagation. The nonreciprocal behavior of propagating waves in a spatiotemporally modulated infinite medium is usually characterized by directional bandgaps present in the frequency-wavenumber spectrum. However, less attention has been given to acoustic scattering from spatiotemporally modulated media. In this work, we consider nonreciprocal reflection and transmission from a spatiotemporally modulated, infinite elastic plate exc

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31

Shi, Ao, Bo Lu, Dangguo Yang, Xiansheng Wang, Junqiang Wu, and Fangqi Zhou. "Study on model design and dynamic similitude relations of vibro-acoustic experiment for elastic cavity." Modern Physics Letters B 32, no. 12n13 (2018): 1840047. http://dx.doi.org/10.1142/s021798491840047x.

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Coupling between aero-acoustic noise and structural vibration under high-speed open cavity flow-induced oscillation may bring about severe random vibration of the structure, and even cause structure to fatigue destruction, which threatens the flight safety. Carrying out the research on vibro-acoustic experiments of scaled down model is an effective means to clarify the effects of high-intensity noise of cavity on structural vibration. Therefore, in allusion to the vibro-acoustic experiments of cavity in wind tunnel, taking typical elastic cavity as the research object, dimensional analysis and

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32

Gupta, A. K., S. Srivastava, and K. B. Thapa. "Temperature Dependent Ultrasonic Study in Scandium Antimonide Semiconductor." E-Journal of Chemistry 9, no. 3 (2012): 1400–1406. http://dx.doi.org/10.1155/2012/130434.

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In this paper analysis of wave propagation of elastic wave in scandium antimonide semiconductor was investigated. In scandium antimonide semiconductor, NaCl structure was found. Ultrasonic properties like ultrasonic attenuation, sound velocities, acoustic coupling constants, and thermal relaxation time have been investigated in cubic scandium antimonide semiconductor. Second and third order elastic constant have been computed for the evaluation of above said ultrasonic properties. Second and third elastic constant was studied at the various temperatures. Longitudinal and shear velocity was cal

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Pei, Xi, Min Xu, and Dong Guo. "Aeroelastic-Acoustics Numerical Simulation Research." Applied Mechanics and Materials 226-228 (November 2012): 500–504. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.500.

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The generation of aerodynamic noise of aircraft in flight is due to dynamical system and aerodynamic .The response of aircraft subjected to High acoustic loads and aerodynamic loads can produce fatigue and damage. In this paper a new Aeroelastic- Acoustics which adds acoustic loads in aeroelastic is presented. The emphasis of the study is the discipline of displacement and load of the flexible structure under the unsteady aerodynamic, inertial, elastic and aero-acoustic. The CFD/CSD/CAA coupling is used to simulate rockets cabin. Sound generated by a rocker is predicted numerically from a Larg

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Goldsberry, Benjamin M., Craig W. Broadman, Christina J. Naify, and Michael R. Haberman. "Exact radiation boundary conditions to determine the complex wavenumber of an underwater acoustic leaky wave antenna." JASA Express Letters 3, no. 3 (2023): 035601. http://dx.doi.org/10.1121/10.0017486.

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Underwater elastic leaky wave antennas (LWAs) steer acoustic energy as a function of frequency by exploiting fluid-solid coupling. LWAs present a modeling challenge due to complex radiation impedance on the waveguide surface that leads to changes in dynamic response. This work presents an approach to model underwater LWAs that considers an elastic unit cell surrounded by a fluid domain and includes a radiation boundary condition to simulate an open boundary. The model solves an eigenvalue problem for the complex-valued wavenumber given a specified frequency, forming an accurate representation

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35

Bilal, Osama R., André Foehr, and Chiara Daraio. "Bistable metamaterial for switching and cascading elastic vibrations." Proceedings of the National Academy of Sciences 114, no. 18 (2017): 4603–6. http://dx.doi.org/10.1073/pnas.1618314114.

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The realization of acoustic devices analogous to electronic systems, like diodes, transistors, and logic elements, suggests the potential use of elastic vibrations (i.e., phonons) in information processing, for example, in advanced computational systems, smart actuators, and programmable materials. Previous experimental realizations of acoustic diodes and mechanical switches have used nonlinearities to break transmission symmetry. However, existing solutions require operation at different frequencies or involve signal conversion in the electronic or optical domains. Here, we show an experiment

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Shepard, W. S., K. A. Cunefare, and J. H. Ginsberg. "Identifying Critical Elastic Scales in Structural-Acoustic Models." Journal of Vibration and Acoustics 120, no. 2 (1998): 455–60. http://dx.doi.org/10.1115/1.2893851.

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The level of detail required for accurate structural acoustic modeling of fluid loaded structures remains an issue of significant debate. Analytical solutions are rarely available, and discrete numerical solutions are typically too complex for ready extraction of physical understanding. In addition, numerical techniques introduce their own explicit scales through the minimum mesh dimension. However, the wavenumber based formulation of the surface variational principle describes the surface pressure and displacement as a comparatively small set of interacting waves. Coupling the SVP with distri

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Sayed Ahmed, Moustafa, Mehdi Ghommem, and Shima Shahab. "Mode couplings in multiplex electromechanical structures." Journal of Applied Physics 132, no. 12 (2022): 124901. http://dx.doi.org/10.1063/5.0103146.

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Mode couplings associated with elastic wave propagation through three-dimensional multiplex structures, as manifested by asymmetric eigenmodes and dissipation, determine the efficiency of electromechanical structures. As a result, it is critical to predict electroelastic symmetric modes such as thickness expander and radial modes, as well as asymmetric flexural modes, while accounting for material losses. Multiplex electromechanical structures include multi-layered through-wall ultrasound power transfer (TWUPT) systems. Physical processes that support TWUPT include vibrations at a transmitting

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Brunnhuber, Rainer, Barbara Kaltenbacher, and Petronela Radu. "Relaxation of regularity for the Westervelt equation by nonlinear damping with applications in acoustic-acoustic and elastic-acoustic coupling." Evolution Equations & Control Theory 3, no. 4 (2014): 595–626. http://dx.doi.org/10.3934/eect.2014.3.595.

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Warszawski, A., D. Soares, and W. J. Mansur. "A FEM–BEM coupling procedure to model the propagation of interacting acoustic–acoustic/acoustic–elastic waves through axisymmetric media." Computer Methods in Applied Mechanics and Engineering 197, no. 45-48 (2008): 3828–35. http://dx.doi.org/10.1016/j.cma.2008.03.005.

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Vitebskiĭ, I. M., and N. M. Lavrinenko. "Symmetry of magnetoelastic interaction in hexagonal perovskites." Soviet Journal of Low Temperature Physics 12, no. 11 (1986): 672–76. https://doi.org/10.1063/10.0031606.

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The coupling of acoustic and exchange magnons with the elastic subsystem in hexagonal perovskites, which have a noncollinear antiferromagnetic structure of the triangular type, is studied. General conclusions are drawn about the features of the magnetoelastic interaction in antiferromagnets with a noncollinear structure of exchange origin. The existence of linear magnetoelastic and piezomagnetic effects of exchange origin is predicted.

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Bai, Wen-Chao, Yan Cao, Ben-Hu Zhou, et al. "Theoretical Investigation of Magneto-Electro-Elastic Piezoelectric Phononic Crystal." Crystals 12, no. 6 (2022): 876. http://dx.doi.org/10.3390/cryst12060876.

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We design a magneto-electro-elastic piezoelectric phononic crystal (MPPC) using a one-dimensional piezoelectric superlattice (with a 3m point group) and split-ring resonators. The effect of the split-ring resonators is to enhance the piezoelectric effect of the piezoelectric superlattices. This effect will create elastic anomalies and generate the phononic band gaps. These are first proposed theoretically. We calculate the transmission function of the MPPC through Transfer Matrix Method of the phononic crystal. By using the transmission function, we theoretically study the propagation properti

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An, Buchao, Chao Zhang, Dejiang Shang, Yan Xiao, and Imran Ullah Khan. "A Combined Finite Element Method with Normal Mode for the Elastic Structural Acoustic Radiation in Shallow Water." Journal of Theoretical and Computational Acoustics 28, no. 04 (2020): 2050004. http://dx.doi.org/10.1142/s2591728520500048.

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A combined Finite Element Method with Normal Mode (FEM-NM) is proposed for calculation of the acoustic field radiated by a three-dimensional structural source in shallow water. The FEM is used to calculate the near range acoustic field, then the modes expansion at the vertical and azimuthal direction is performed at a certain coupling range. Hence, the true three-dimensional acoustic field at any range is obtained rapidly by the NM theory. The numerical examples show the efficiency and accuracy of this method. The coupling range and the truncation of the vertical modes hardly affect the far fi

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Kruntcheva, Mariana R. "Acoustic-Structural Resonances of Thin-Walled Structure—Gas Systems." Journal of Vibration and Acoustics 128, no. 6 (2006): 722–31. http://dx.doi.org/10.1115/1.2345679.

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This paper summarizes a theoretical study, which is a natural continuation of approximately 50 years of research in the field of acoustoelasticity. Recently, the researchers’ interest has been directed towards considering compressible fluid in contact with thin walled structures as it was found that the acoustic-structural coupling significantly changes the dynamic behavior of the system. Despite the interesting findings the main results still need additional, numerical, or experimental verification. The present work is intended to cast more light on the acoustic-structure coupling of light fl

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Srivastav, P., A. K. Prajapati, and P. K. Yadawa. "Theoretical Investigation on Thermal, Mechanical and Ultrasonic Properties of Zirconium Metal with Pressure." Physics and Chemistry of Solid State 24, no. 3 (2023): 549–57. http://dx.doi.org/10.15330/pcss.24.3.549-557.

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Zirconium (Zr), a metal with an hcp structure, has been investigated for the transmission of acoustic wave in the 0 to 25 GPa operating pressure. For this, the Lennard-Jones interaction potential approach has been used to estimate the higher order elastic coefficients (SOECs and TOECs). This model is used to calculate the 2nd and 3rd order elastic parameters for zirconium metal. With the help of SOECs, other elastic moduli such as bulk modulus (B), Young’s modulus (Y) and shear modulus (G) have been calculated for Zr metal using Voigt-Reuss-Hill (VRH) approximations. Later, applying SOECs as w

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Yang, Jihyun, Jeffrey Shragge, and Ge Jin. "Filtering Strategies for Deformation-Rate Distributed Acoustic Sensing." Sensors 22, no. 22 (2022): 8777. http://dx.doi.org/10.3390/s22228777.

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Deformation-rate distributed acoustic sensing (DAS), made available by the unique designs of certain interrogator units, acquires seismic data that are theoretically equivalent to the along-fiber particle velocity motion recorded by geophones for scenarios involving elastic ground-fiber coupling. While near-elastic coupling can be achieved in cemented downhole installations, it is less obvious how to do so in lower-cost horizontal deployments. This investigation addresses this challenge by installing and freezing fiber in shallow backfilled trenches (to 0.1 m depth) to achieve improved couplin

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Novoselov, Artemii, Florian Fuchs, and Goetz Bokelmann. "Acoustic-to-seismic ground coupling: coupling efficiency and inferring near-surface properties." Geophysical Journal International 223, no. 1 (2020): 144–60. http://dx.doi.org/10.1093/gji/ggaa304.

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SUMMARY A fraction of the acoustic wave energy (from the atmosphere) may couple into the ground, and it can thus be recorded as ground motion using seismometers. We have investigated this coupling, with two questions in mind, (i) how strong it is for small explosive sources and offsets up to a few tens of meters and (ii) what we can learn about the shallow subsurface from this coupling. 25 firecracker explosions and five rocket explosions were analysed using colocated seismic and infrasound sensors; we find that around 2 per cent of the acoustic energy is admitted into the ground (converted to

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Zhang, Hong, Yiqun Ding, Lin He, Changgeng Shuai, and Chao Jiang. "The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities." Applied Sciences 14, no. 3 (2024): 1002. http://dx.doi.org/10.3390/app14031002.

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In order to study vibro-acoustic characteristics between composite laminated rotationally stiffened plate and acoustic cavities in the coupled system, first-order shear deformation theory (FSDT) and modified Fourier series are used to construct a unified analysis model. The involved coupled systems primarily encompass three types: the coupled system between composite laminated rotationally stiffened plate and cylindrical-cylindrical cavities, spherical-cylindrical cavities, and conical-cylindrical cavities. First, the first-order shear deformation theory and the modified Fourier series are app

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Maury, Cédric, and Teresa Bravo. "Vibrational Effects on the Acoustic Performance of Multi-Layered Micro-Perforated Metamaterials." Vibration 6, no. 3 (2023): 695–714. http://dx.doi.org/10.3390/vibration6030043.

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Broadband noise reduction over the low–mid frequency range in the building and transportation sectors requires compact lightweight sound absorbers of a typical subwavelength size. The use of multi-layered, closely spaced (micro-)perforated membranes or panels, if suitably optimized, contributes to these objectives. However, their elasticity or modal behaviors often impede the final acoustical performance of the partition. The objective of this study is to obtain insights into the vibrational effects induced by elastic limp membranes or panel volumetric modes on the optimized sound absorption p

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Xu, He, and Deyi Kong. "A thin-film acoustic metamaterial absorber with tunable sound absorption characteristics." Journal of the Acoustical Society of America 153, no. 6 (2023): 3493–500. http://dx.doi.org/10.1121/10.0019852.

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A thin-film absorber with tunable acoustic properties over a wideband is designed based on the acoustic metamaterial theory. The thin-film acoustic metamaterial absorber (TFAMA) consists of a frame made of piezoelectric material and several flexible films with attached mass blocks (mass-spring vibration system). Based on the vibration mechanism of the mass-spring vibration system, a cellular model of local resonance form is established, and the material properties of negative effective mass are discussed. Combined with the vibration modal analysis of the coupling of mass block, elastic film, a

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Göransson, Peter. "Acoustic and vibrational damping in porous solids." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 364, no. 1838 (2005): 89–108. http://dx.doi.org/10.1098/rsta.2005.1688.

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A porous solid may be characterized as an elastic–viscoelastic and acoustic–viscoacoustic medium. For a flexible, open cell porous foam, the transport of energy is carried both through the sound pressure waves propagating through the fluid in the pores, and through the elastic stress waves carried through the solid frame of the material. For a given situation, the balance between energy dissipated through vibration of the solid frame, changes in the acoustic pressure and the coupling between the waves varies with the topological arrangement, choice of material properties, interfacial condition

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