{"title":"Multiple scattering field and derived acoustic interaction force and torque for multiple non-spherical axisymmetric objects","authors":"Tianquan Tang , Yumin Zhang , Yanming Zhang , Lixi Huang","doi":"10.1016/j.jsv.2025.119285","DOIUrl":"10.1016/j.jsv.2025.119285","url":null,"abstract":"<div><div>While analytical theories exist for the acoustic radiation force and torque on single irregular geometries, dealing with multiple objects subject to non-orthogonal and inseparable boundary conditions remains a challenge. Here, we present a calculation method to formulate the interaction effects of multiple axisymmetric geometries with irregular cross-section excited by a time-harmonic external wave in the inviscid fluid. The approach utilizes the translation addition theorem to incorporate the interaction effects among different objects and the conformal transformation approach to capture the non-spherical geometric features. This facilitates the separation of variables for solving the corresponding Helmholtz wave equation, subject to spherical boundary conditions in the mapping coordinate system. As a result, the multiple scattering fields can be determined. Subsequently, the acoustic interaction force and torque can be derived using the scattered pressure field. The validity of the method is demonstrated through comparisons with numerical simulations based on finite element method across a wide range of frequencies and various geometric combinations. The proposed method shows strong agreement with the traditional finite element method while requiring much less computational time.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119285"},"PeriodicalIF":4.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Crowdsensing-based bridge vibration monitoring using a sparse network of random mobile sensors: Theory and numerical verifications","authors":"Mohammad Talebi-Kalaleh, Mustafa Gül, Qipei Mei","doi":"10.1016/j.jsv.2025.119289","DOIUrl":"10.1016/j.jsv.2025.119289","url":null,"abstract":"<div><div>Vibration monitoring of bridges is essential for the safety and maintenance of transportation infrastructure. Traditional methods rely on placing sensors directly on bridges, a process that is often costly and difficult to scale. An emerging alternative involves utilizing sensors mounted within vehicles as they traverse the bridge. However, this approach often faces challenges with continuous monitoring due to the limited time vehicles spend on the structure. This paper presents a novel framework for predicting bridge responses and identifying its modal characteristics through the crowdsensing of sparse vibration data from a network of vehicles traversing the bridge. The framework employs vehicles’ body accelerations and positional data to estimate bridge responses at distributed virtual fixed sensing nodes (VFSNs). By randomly selecting some vehicles as sensing agents at sequential timestamps, it ensures a reliable and continuous flow of data. Additionally, the framework mitigates the influence of road roughness and vehicle dynamics by utilizing residual contact-point responses between the rear and front axles of the sensing vehicles. Simulations of a three-span bridge under realistic traffic conditions, including road roughness and vehicle–bridge interaction, were conducted to validate the framework’s accuracy. Despite an 80% data missing rate and relying on only two sensing agents along with 17 VFSNs, the framework successfully identified the first three modes of the bridge with MAC values above 95% and natural frequencies with relative errors below 3%. Response predictions showed an accuracy exceeding 70%. Various factors were investigated, including traffic speed, the number of sensing agents and VFSNs, ambient noise effects, and the impact of the random vehicle selection process. The results confirmed the robustness of the framework against ambient noise and randomness in sensing agent selection. The optimal configuration was identified as two sensing agents and 17 VFSNs.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119289"},"PeriodicalIF":4.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mario Lázaro , Richard Wiltshaw , Richard V. Craster , Vicent Romero-García
{"title":"Wave propagation in beams with multiple resonators: Conditions for weak scattering and the Born approximation","authors":"Mario Lázaro , Richard Wiltshaw , Richard V. Craster , Vicent Romero-García","doi":"10.1016/j.jsv.2025.119277","DOIUrl":"10.1016/j.jsv.2025.119277","url":null,"abstract":"<div><div>We investigate the conditions necessary for weak scattering in a beam loaded by multiple resonators that support both longitudinal and flexural waves. Using a Green’s matrix approach we derive the equations of motion of a one-dimensional elastic waveguide with several point resonators, for any resonator morphology modeled by the transfer matrix method, even when considering the resonators to have any number of natural frequencies. The methodology is based on multiple scattering theory, expressing the response as an infinite series whose convergence is closely linked to the scattering intensity provided by the resonators. The convergence conditions are reduced to the study of the spectral radius of the scattering matrix. Furthermore, the leading order of the multiple scattering expansion is associated with the Born approximation. The results offer approximate expressions for the spectral radius, providing a clear physical interpretation of weak scattering. Several numerical examples are presented to validate the proposed approach, demonstrating its effectiveness and applicability.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119277"},"PeriodicalIF":4.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Interpretable damage sensitive feature extraction for drive-by structural health monitoring using knowledge distillation-based deep learning","authors":"Zhen Peng , Jun Li , Yue Zhong , Hong Hao","doi":"10.1016/j.jsv.2025.119303","DOIUrl":"10.1016/j.jsv.2025.119303","url":null,"abstract":"<div><div>Drive-by Structural Health Monitoring (SHM) has the potential to effectively monitor the health conditions of bridges within transportation networks at a low cost. However, how to extract damage features from the drive-by measurements that are sensitive to changes in structural conditions while being robust to variations in vehicle loading scenarios and operational conditions is still an open question. This paper leverages advanced deep learning and knowledge distillation techniques to extract reliable damage-sensitive features from drive-by measurements in a supervised manner. To accomplish this, the proposed deep learning network is trained using thousands of drive-by measurements collected under various conditions, including different vehicle speeds, weights, directions, and structural damage states. This study includes an analysis of the network's intermediate layer outputs, numerical results from a finite element (FE) model of the test bridge, and theoretical derivations to interpret the physical significance of the learned damage features. The knowledge gained from this deep learning network subsequently informs and guides the theoretical development of generally applicable damage-sensitive features for drive-by SHM. In particular, this research work evidences that, in future drive-by SHM studies, more attention should be paid to the low-frequency driving speed-related component, instead of the conventional methods that focus on separating and extracting damage features from the bridge modal vibration related component of the drive-by measurement.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119303"},"PeriodicalIF":4.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reduced-order modeling for dispersion analysis of elastic waveguides coupled to arrays of nonlinear systems","authors":"Said Quqa, Alessandro Marzani, Antonio Palermo","doi":"10.1016/j.jsv.2025.119256","DOIUrl":"10.1016/j.jsv.2025.119256","url":null,"abstract":"<div><div>This work introduces a reduced-order modeling (ROM) approach for deriving the dispersion relation of elastic waveguides hosting an array of nonlinear resonating systems with multiple degrees of freedom. The ROM is constructed using the invariant manifold method, which captures the effects of nonlinear restoring forces from secondary “slave” modes as functions of the displacement and velocity coordinates of a selected “master” mode. This enables the efficient computation of the transfer function of the resonating system and its coupling with the waveguide to compute the wave dispersion relation. The results demonstrate that incorporating mode interactions through the ROM provides accurate estimates of the behavior of the full nonlinear model, ensuring accurate prediction of the dispersion relation while maintaining computational efficiency. Conversely, neglecting mode interactions would lead to significant errors in both resonator response and waveguide dispersion estimation, potentially resulting in suboptimal metamaterial design. The proposed approach provides a robust framework for designing nonlinear metamaterials with complex resonator configurations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119256"},"PeriodicalIF":4.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Vibration attenuation performance prediction in metamaterials: An efficient computational approach addressing parametric uncertainties","authors":"J. Pereira , J.C. Romero-Quintini , R.O. Ruiz , J.F. Beltran","doi":"10.1016/j.jsv.2025.119291","DOIUrl":"10.1016/j.jsv.2025.119291","url":null,"abstract":"<div><div>Mechanical metamaterials have proven useful for vibration attenuation applications. Nevertheless, uncertainties during the manufacturing process affect their expected performance as each substructure deviates from the nominal characteristics. To account for this, uncertainty quantification at the structural level must be performed, potentially involving a significant computational cost. In this study, a novel computational framework is developed to accelerate the vibration attenuation performance identification in metamaterials under uncertainties associated with model parameters. The uncertainty quantification is based on Monte Carlo Simulations (MCS) at the structure level, allowing each unit cell to have independent model parameters and avoiding the assumption of infinite periodic lattices. The computational overload of the recursive computation of high-fidelity simulations demanded by the MCS is avoided by the novel integration of a Craig–Bampton (CB) mode synthesis, stiffness matrix perturbations, and a Kriging surrogate model. The CB method partitions the metamaterial into small substructures simultaneously to perform a modal reduction of the mass and stiffness matrices at the substructural level. The perturbation strategy is imposed over a baseline model and is applied to each substructural CB-reduced stiffness matrix. The Kriging model provides an approximation to predict the perturbation magnitude for a new set of model parameters. Three example problems are developed to illustrate the accuracy and implementation of the method. These results showcase how the uncertain vibration attenuation performance predictions of the metamaterial can be achieved at a reduced computational cost, allowing for uncertainty quantification analysis of metamaterials at tractable speeds.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119291"},"PeriodicalIF":4.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nonlinear dynamics of ball vibration absorber considering stability, stationarity and rolling-condition boundaries","authors":"Š. Dyk, R. Bulín, J. Rendl","doi":"10.1016/j.jsv.2025.119265","DOIUrl":"10.1016/j.jsv.2025.119265","url":null,"abstract":"<div><div>The paper presents a detailed nonlinear analysis of a ball vibration absorber (BVA), which consists of a harmonic oscillator with a spherical cavity and a rolling ball as an absorber. Frequency response curves are calculated using the harmonic balance method and pseudo arc length continuation, and stability is assessed using stability analysis applied to modulation equations. This is particularly important at higher excitation amplitudes where the modulation equations provide information on the presence of strongly modulated response regimes. Codimension-2 continuation is used to identify the onset of instability and non-stationary regions with respect to all key design parameters. The study highlights the critical role of the rolling and contact conditions in maintaining the validity of the solution and provides conditions for their satisfaction. The results provide valuable insights into the non-linear dynamic behaviour of the BVA, revealing its effectiveness in vibration reduction and its limitations due to parameter selection and design constraints.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119265"},"PeriodicalIF":4.3,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental realization of an active time-modulated airborne acoustic circulator at audible frequencies","authors":"Matthieu Malléjac , Romain Fleury","doi":"10.1016/j.jsv.2025.119246","DOIUrl":"10.1016/j.jsv.2025.119246","url":null,"abstract":"<div><div>Reciprocity is one of the fundamental characteristics of wave propagation in linear time-invariant media with preserved time-reversal symmetry. Breaking reciprocity opens the way to numerous applications in the fields of phononics and photonics, as it allows the unidirectional transport of information and energy carried by waves. In acoustics, achieving non-reciprocal behavior has lead extensive research including active and activated structures, nonlinear media, as well as moving media. In particular, time modulation has shown its efficiency to violate time-reversal symmetry and lead to non-reciprocity. Here, we design and experimentally demonstrate a three-port non-reciprocal acoustic scatterer that behaves as a circulator for audible sound, by actively modulating the effective mass of the acoustic membranes over time. We discuss the conception and experimental validation of such an acoustic circulator, implemented with actively controlled loudspeakers, in the realm of audible and airborne acoustics, and demonstrate its good performance in different scenarios.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119246"},"PeriodicalIF":4.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Homogenization of the acoustic streaming in periodic rigid porous structures","authors":"Eduard Rohan, Fanny Moravcová","doi":"10.1016/j.jsv.2025.119252","DOIUrl":"10.1016/j.jsv.2025.119252","url":null,"abstract":"<div><div>The paper presents a new model of the acoustic streaming (AS) in rigid porous media. The modelling is based on the classical perturbation approach combined with the periodic homogenization. The first one enables to linearize the Navier–Stokes equations for a barotropic fluid using the decomposition into the first and the second order subproblems governing the fluid dynamics in the rigid period scaffolds. The acoustic wave captured by the first order problem provides the Reynolds stress which appears in the second order problem as the streaming source term. Both the subproblems are treated by the homogenization resulting in the dynamic Darcy flow equations. Using spectral analysis of the characteristic microscopic dynamic Stokes flow and the associated spectral decomposition of the responses, the dynamic permeability is derived and also the driving force for the time-averaged permanent flow is evaluated. The AS can be observed at both the macroscopic and the microscopic levels. While the acoustics-driven microflows are observed for any microstructure, the macroscopic AS depends on the porous microstructure geometry, its nonsymmetry and boundary conditions. For porous particulate structures, the forces and force moments acting on the suspended particles are computed and the influence of the wave frequency and geometrical features is examined. All these effects are illustrated using 2D examples of periodic porous microstructures.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119252"},"PeriodicalIF":4.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shaowu Ning , Yuanyuan Jin , Dongyang Chu , Zhanli Liu
{"title":"Active control of sound transmission through double-panel structure into an enclosure based on controllable boundary condition of sound field","authors":"Shaowu Ning , Yuanyuan Jin , Dongyang Chu , Zhanli Liu","doi":"10.1016/j.jsv.2025.119297","DOIUrl":"10.1016/j.jsv.2025.119297","url":null,"abstract":"<div><div>Double-panel structure has a wide range of important applications in transportation vehicles, aerospace, and aeronautical structures and so on. To improve the low frequency sound insulation performance of the double-panel structure, an active control strategy based on controllable boundary condition of sound field is proposed to improve the low frequency sound insulation performance of double-panel structure. Taking advantage of the interlayer space of double-panel structure, the simply supported rectangular plates are embedded into the boundaries of the interlayer sound field as new controllable boundaries, which is named controlled boundary plates (CBPs). The control force is applied at the CBP. Three control objectives, i.e., minimization of total time averaged acoustical potential energy of enclosure sound field (TAPE-E), minimization of total time averaged acoustical potential energy of interlayer sound field (TAPE-I), and minimization of averaged kinetic energy of the low panel (AKE-L), are adopted to optimize the control forces. The results indicate that the arrangement of CBP can significantly alter the vibro-acoustic coupling performance of the overall system. The active control strategy with the three different control objective functions can achieve ideal improvement of sound insulation performance of double-panel. In comparison with point acoustic source, the CBP can be regarded as a combination of multiple monopoles and dipoles, the better control performance can be obtained in high frequency range. In addition, the effects of the dimension, number and location of control force are investigated. Through calculation and analysis, there are two main control mechanisms, i.e., modal suppression and modal rearrangement. This study provides guidelines for the active noise control and the improvement of the low frequency sound insulation performance of the engineering structures.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119297"},"PeriodicalIF":4.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}