{"title":"Three-dimensional free vibrations of piezoelectric spherical shells filled with non-Newtonian fluids","authors":"Yuze Cao , Bin Wu , Weiqiu Chen","doi":"10.1016/j.jsv.2025.119294","DOIUrl":"10.1016/j.jsv.2025.119294","url":null,"abstract":"<div><div>The dynamic interaction between piezoelectric structures and complex fluids is critical due to their widespread use in devices operating within complex fluid environments. This study investigates the three-dimensional (3D) free vibration behavior of a piezoelectric spherical shell filled with a non-Newtonian fluid, accounting for both shear and compressional relaxation effects. The linearized generalized Navier–Stokes equations in spherical coordinates are solved analytically by introducing appropriate velocity potential functions. Based on linear piezoelectricity theory, the governing equations for torsional and spheroidal modes are decoupled via three displacement functions and solved using the generalized Frobenius power series method. By enforcing the interface continuity conditions of the fluid–structure coupling system, complex characteristic frequency equations for the two classes of free vibrations are ultimately formulated. The complex vibration frequencies are computed using the Muller iteration algorithm. The proposed methodology is validated through comparative analysis with existing literature. Numerical examples are presented to examine the influences of fluid viscosity, fluid viscoelasticity, and spherical shell size on the vibration frequency and quality factor. The 3D analytical solutions developed in this study provide a theoretical basis for analyzing the vibrations of piezoelectric spherical containers and resonators filled with complex fluids, with promising applications in engineering and biomedicine.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119294"},"PeriodicalIF":4.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471204","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}
E. De Bono , M. Collet , M. Ouisse , E. Salze , M. Volery , H. Lissek , J. Mardjono
{"title":"The Advection Boundary Law in presence of mean flow and plane wave excitation: Passivity, nonreciprocity and enhanced noise transmission attenuation","authors":"E. De Bono , M. Collet , M. Ouisse , E. Salze , M. Volery , H. Lissek , J. Mardjono","doi":"10.1016/j.jsv.2025.119293","DOIUrl":"10.1016/j.jsv.2025.119293","url":null,"abstract":"<div><div>This paper follows a previous publication, where the so-called Advection Boundary Law lining an acoustic waveguide, in absence of mean flow, was studied in terms of its potentials for noise isolation and non-reciprocal propagation. The Advection Boundary Law is a special operator which can be synthesized on the boundary of a waveguide thanks to a programmable Electroacoustic Liner. This special boundary operator proved to achieve enhanced noise isolation with respect to classical local impedance. Moreover, it demonstrated to accomplish non-reciprocal sound propagation along the waveguide, and the non-trivial passivity limits were assessed. Nevertheless, acoustic liners are meant to attenuate noise propagation in waveguides with airflow, such as heating and air-conditioning ventilation systems and aircraft turbofan engines. In particular, the new generation of Ultra-High-By-Pass-Ratio turbofans and the increasingly stringent regulations on aircraft noise pollution, require a significant breakthrough in the acoustic liner technology. This challenge was taken up by the SALUTE H2020 project, during which the experimental campaign reported in this paper was conducted. For the first time, the Advection Boundary Law interfacing an airflow is thoroughly analysed in terms of duct-modes and scattering simulations. The enhancement of isolation performances is confirmed also in presence of mean-flow. Moreover, for the first time, non-reciprocal propagation along the waveguide is achieved against the one naturally induced by the mean-flow. These results, along with the passivity limits, are discussed and confirmed by the experimental campaign, conducted on the CAIMAN test-bench of the Laboratory of Fluid Mechanics and Acoustics of the Ecole Centrale de Lyon. The tools and results provided in this paper should lead the implementation of the Advection Boundary Law for maximizing noise isolation or achieving non-reciprocal sound propagation along waveguides with airflow.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119293"},"PeriodicalIF":4.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338402","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}
Zi Yuan , Lincong Chen , Jian-Qiao Sun , Jiamin Qian
{"title":"Feynman–Kac-RBFNN for the stochastic analysis of Bouc–Wen hysteretic systems","authors":"Zi Yuan , Lincong Chen , Jian-Qiao Sun , Jiamin Qian","doi":"10.1016/j.jsv.2025.119255","DOIUrl":"10.1016/j.jsv.2025.119255","url":null,"abstract":"<div><div>Hysteretic systems are fundamental in engineering, yet their stochastic response analysis remains a significant challenge due to the additional partial differential equations (PDEs) introduced by hysteresis. This paper investigates the application of a Feynman–Kac-based Radial Basis Function Neural Network (RBFNN) method for analyzing the stochastic response of Bouc–Wen hysteretic systems. By reformulating the Fokker–Planck (FPK) equation via the Feynman–Kac framework, the PDE is transformed into an integral form, eliminating high-order derivative computations typical in conventional RBFNN approaches. Additionally, short-time Gaussian approximation (STGA) is employed to derive analytical expressions for stochastic expectations. Building on existing RBFNN techniques, this study incorporates an inscribed spherical sampling strategy to efficiently solve for the trial solution weights. Numerical experiments on Bouc–Wen systems with both softening and hardening characteristics validate the method, showing strong agreement with Monte Carlo Simulations (MCS) in both marginal and joint probability density functions (PDFs). The results reveal bimodal distributions in the softening case, highlighting complex non-Gaussian stochastic dynamics. The framework reduces computational cost while maintaining considerable accuracy, offering a practical and efficient approach for nonlinear stochastic dynamics in engineering applications.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119255"},"PeriodicalIF":4.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366896","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}
{"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}
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":"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}