Journal of Sound and Vibration最新文献

{"title":"Complex dynamic stiffness identification of panels using inverse methods based on optical deflectometry measurements","authors":"Nicolas Madinier ,&nbsp;Quentin Leclère ,&nbsp;Kerem Ege ,&nbsp;Alain Berry","doi":"10.1016/j.jsv.2025.119373","DOIUrl":"10.1016/j.jsv.2025.119373","url":null,"abstract":"<div><div>The Virtual Fields Method and the Force Analysis Technique are two inverse methods that can be applied to identify the bending stiffness normalised by mass per unit area and the loss factor of a Love–Kirchhoff plate. To be applied, both methods require a measured displacement field. This can be measured using optical deflectometry, a full-field measurement technique. However, in optical deflectometry, it is the first-order spatial derivatives of the displacement (also known as slope fields) that are measured and not the displacement directly. This paper proposes new formalisms for the Virtual Fields Method and the Force Analysis Technique so that the methods can be applied using only the slope fields. This process of coupling the two inverse methods with optical deflectometry also involves accurately estimating the spatial step of the experimental mesh. A procedure for measuring this quantity accurately is proposed in this article. The new formalisms are tested and validated with numerical and experimental data, which are used to estimate the bending stiffness normalised by the mass per unit area and the loss factor of a Love–Kirchhoff plate.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119373"},"PeriodicalIF":4.9,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879177","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":"Bifurcation behavior of hunting motion in high-speed rail vehicles under modal coupling","authors":"Peng Guo,&nbsp;Caihong Huang,&nbsp;Jing Zeng","doi":"10.1016/j.jsv.2025.119400","DOIUrl":"10.1016/j.jsv.2025.119400","url":null,"abstract":"<div><div>This paper presents a theoretical study of hunting bifurcation behavior in high-speed rail vehicles under modal coupling and compares it to the traditional uncoupled system. A dynamic simplified model that integrates the lateral and yaw motions of the rigid bogie and the lateral motion of the carbody is established to evaluate the modal coupled effect between the carbody and bogie. The stability and Hopf bifurcation of the trivial equilibrium are first analyzed qualitatively using the normal form theory. The linear stability analysis then reveals that modal coupling introduces a new unstable region known as carbody (primary) hunting, which is absent in the uncoupled system that only exhibits bogie (secondary) hunting. The double-parameter Hopf bifurcation analysis is further carried out, which considers the influence of suspension parameters on the bifurcation speed and stability region. Our findings indicate that the dynamical behavior of the coupled system can closely match that of the uncoupled system with suitable parameter configurations, effectively reducing primary hunting and enhancing the overall hunting stability of rail vehicles.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119400"},"PeriodicalIF":4.9,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889655","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":"PSAFE: A semi-analytical finite element formulation for spatially periodic structural systems","authors":"S. Mariani,&nbsp;F. Zeighami,&nbsp;A. Marzani,&nbsp;A. Palermo","doi":"10.1016/j.jsv.2025.119391","DOIUrl":"10.1016/j.jsv.2025.119391","url":null,"abstract":"<div><div>In this article, we present a semi-analytical finite element (SAFE) scheme that enables modeling spatially periodic structural systems. This represents a fundamental extension of the existing SAFE methods, which strictly require translational invariance along the wave propagation direction. Specifically, we develop a formulation that considers viscoelastic plates equipped with regularly spaced resonant structures under plane-strain conditions. Our approach involves (i) imposing Bloch conditions on the unknown displacement field within the plate, (ii) discretizing only the plate’s cross-section, and (iii) modeling the resonant structures as periodic mechanical impedances. This effectively transforms the problem into Fourier space, where the geometrical coordinates are replaced by their Fourier series expansion counterparts. As a result, we obtain an infinite set of coupled equations governing the plate’s dispersion relations, each of which corresponding to a specific Fourier coefficient and containing an infinite number of terms associated with the periodic resonant structures. To solve this problem numerically, we truncate the infinite series to a finite number of terms and then recast the system into a linearized eigenvalue problem. By means of two case studies, we show that accurate results can be achieved even with low truncation orders, and that the accuracy can be refined by increasing the system’s dimensionality, though at the cost of higher computational expense.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119391"},"PeriodicalIF":4.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863348","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":"Elastic wave transmission and reflection in a rod with an attached nonlinear autoparametric pendulum absorber","authors":"Junqi Pan ,&nbsp;Vladislav Sorokin ,&nbsp;Lihua Tang ,&nbsp;Andrew Hall ,&nbsp;Ao Zhang","doi":"10.1016/j.jsv.2025.119404","DOIUrl":"10.1016/j.jsv.2025.119404","url":null,"abstract":"<div><div>An autoparametric pendulum absorber is an effective device for vibration suppression and has been widely employed across various engineering applications. However, most studies on pendulum absorbers are based on discrete systems. This paper studies the dynamics of a pendulum absorber attached to a continuous elastic rod structure. Wave transmission and reflection at the pendulum attachment point is analysed. First, the governing equations of motions for the rod with an attached pendulum absorber are derived using the elastic wave theory. Subsequently, the first-order and higher-order responses of the system are analysed using the method of varying amplitudes and the results are validated numerically. Due to the energy transfer into the motion of the pendulum, it is shown that the transmitted wave can be reduced considerably. The system parameters affecting the reduction of the transmitted wave are investigated, and a comparison is made between the effectiveness of the autoparametric pendulum absorber and the conventional linear mass-spring-damper absorber. It was found that the nonlinear pendulum absorber can exhibit a wider bandwidth and superior vibration transmission reduction performance compared to the linear absorber.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119404"},"PeriodicalIF":4.9,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887098","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":"Dynamic modeling and analysis for the identification of gear localized faults in planetary gearboxes under eccentricity effects","authors":"Jiawei Fan ,&nbsp;Yu Guo ,&nbsp;Enrico Zio ,&nbsp;Hugo Andre ,&nbsp;Jing Na ,&nbsp;Xingchao Yin","doi":"10.1016/j.jsv.2025.119374","DOIUrl":"10.1016/j.jsv.2025.119374","url":null,"abstract":"<div><div>Planetary gearboxes are widely used in heavy industries such as wind power, transportation, and manufacturing, and their reliability is critical for ensuring the stable operation of mechanical systems. Fault detection and diagnosis in planetary gearboxes are important for ensuring system safety. In gear transmission systems, the features of localized faults typically manifest as sidebands around the meshing frequency in the spectrum or as gear rotation frequency in the envelope spectrum. However, factors such as gear eccentricity and shaft runout can also produce localized gear fault-like spectral features. This makes it difficult to detect localized faults based on characteristic spectral line analysis and sideband energy ratio, especially in complex systems like planetary gearboxes. Recently, the instantaneous angular speed (IAS) signal has emerged as a promising alternative, offering advantages such as eliminating the need for order tracking and being unaffected by time-varying signal transmission paths in planetary gear sets. In this work, we develop a modified planetary gearbox dynamic model and investigate the effects of gear fault and eccentricity on mesh stiffness. Utilizing the developed model, IAS signals are generated, and their waveforms and order spectra analyzed. Additionally, we propose an abnormal-preserving spectral component reconstruction method to extract and enhance abnormal components within the signal. The results indicate that localized gear fault and eccentricity exhibit the same periodicity, both generating fault-related sidebands around meshing orders in the order spectrum, and fault characteristic components in the envelope spectrum. However, after abnormal component reconstruction, gear faults exhibit distinct periodic jitters, accompanied by a significant increase in kurtosis. In contrast, the kurtosis of the reconstructed signal in the case of gear eccentricity does not show a noticeable increase. This distinction allows the accurate identification of gear localized fault in gear systems. The findings are validated experimentally on a planetary gearbox test rig.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119374"},"PeriodicalIF":4.9,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860628","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":"Numerical investigations on nonlinear dynamic responses of multiple bubbles interacting with ultrasonic traveling waves in fluid","authors":"Yihan Chen,&nbsp;Fangtao Xie,&nbsp;Yegao Qu,&nbsp;Penglin Gao","doi":"10.1016/j.jsv.2025.119397","DOIUrl":"10.1016/j.jsv.2025.119397","url":null,"abstract":"<div><div>This study investigates the nonlinear dynamic behaviors of multiple bubbles driven by ultrasonic traveling waves in fluid. A theoretical model in the Lagrangian framework is developed to describe the radial oscillations and translational motions of the bubbles. The model accounts for the primary Bjerknes force, secondary Bjerknes force, and viscous drag acting on the bubbles. The validity of the model is confirmed through comparisons with benchmark solutions. The effects of several factors on bubble dynamics are investigated, including the initial inter-bubble distance, the initial radii of bubbles, and the pressure amplitude and excitation frequency of traveling waves. It is found that bubble pairs driven by traveling waves exhibit six typical types of translational motion. For a chain of three bubbles, various types of translational motion are observed, with either bubble pairs dominating or all three bubbles fully coupled. The configuration of a bubble chain can be decomposed into a bubble pair and a single bubble through enhancement or suppression of bubble pulsation. The chaotic motions of bubble chains are gradually induced as the pressure amplitude of traveling waves increases. Additionally, variations in the excitation frequency of traveling waves enable bubble chains to transit between stable and chaotic configurations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119397"},"PeriodicalIF":4.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889654","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 analysis of hole-containing laminated composite combined structures in electric aircraft using an area scan-fitting approach","authors":"Jian Zang ,&nbsp;Yang Li ,&nbsp;Zhi-Jian Wang ,&nbsp;Ye-Wei Zhang ,&nbsp;Li-Qun Chen","doi":"10.1016/j.jsv.2025.119399","DOIUrl":"10.1016/j.jsv.2025.119399","url":null,"abstract":"<div><div>To address the dynamic analysis requirements of aerospace composite combined plate structures, a novel area scan-fitting method and Rayleigh-Ritz method (ASF-RRM) is proposed for investigating the vibration characteristics of hole-containing aircraft laminated composite combined structure (HALCCS). ASF-RRM can precisely discretize the irregular holes into coordinate points, and then the integral function of the irregular holes is obtained by fitting the mathematical function. Finally, within the theoretical framework of the energy principle, a comprehensive dynamic model containing complex hole geometry, elastic boundary constraints, internal coupling effects and high and low temperature variations is established. The method does not require the use of solving the holes by means of formulas and equations, which simplifies the analysis process. Numerical results obtained from finite element simulations and experimental modal tests confirm the high accuracy and reliability of the ASF-RRM approach. This work provides a novel analytical strategy for the dynamic characterization of complex perforated composite combined structures in aerospace engineering, particularly under coupled high-low temperature-mechanical boundary conditions.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119399"},"PeriodicalIF":4.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889652","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":"The Imaginary Boundary Equivalent Source Method for Acoustic Computation","authors":"Yanhao Chen,&nbsp;Zhifei Zhang,&nbsp;Xuhui Luo,&nbsp;Zhongming Xu,&nbsp;Yansong He","doi":"10.1016/j.jsv.2025.119390","DOIUrl":"10.1016/j.jsv.2025.119390","url":null,"abstract":"<div><div>This paper establishes the equivalent equation of the Equivalent Source Method (ESM) and, under the theoretical framework where the equivalent sources are distributed on a spherical surface, provides a detailed analysis of the factors influencing the errors of ESM. The study shows that, when the equivalent sources are distributed on a sphere, the zeros of the spherical Bessel functions are the primary cause of the non-uniqueness of solutions at characteristic frequencies. Moreover, during numerical inversion, the alternating behavior of zeros of spherical Bessel functions of different orders amplifies the influence of boundary condition errors and discrete orthogonality errors of the equivalent sources on the sound field calculation. To overcome these problems, the properties of the zeros of integer-order spherical Bessel functions in the complex domain are analyzed, and the Imaginary Boundary Equivalent Source Method (IB-ESM) is proposed. In the imaginary domain, spherical Bessel functions of integer order have no zeros, and their function values decrease monotonically with increasing order. This means that IB-ESM not only eliminates the non-uniqueness problem at characteristic frequencies but also effectively suppresses the discrete orthogonality errors in the high-order spherical wave spectrum. The theoretical analysis under these simplified conditions provides a rational basis for the proposed method. To further verify the applicability and practicality of IB-ESM over a broader scope, various numerical simulations are conducted, including configurations with equivalent sources distributed on both spherical and cubic surfaces. The simulation results demonstrate that IB-ESM is effective and superior in sound field reconstruction in acoustic holography, as well as in solving sound scattering problems involving soft, hard, and impedance boundaries, and sound radiation problems of rigid enclosures. Compared with the conventional ESM, IB-ESM completely eliminates the non-uniqueness problem and achieves higher computational accuracy across a wide frequency range.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119390"},"PeriodicalIF":4.9,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889653","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":"Waves in geometrically modulated metabeams","authors":"Somraj Sen,&nbsp;Arnab Banerjee","doi":"10.1016/j.jsv.2025.119326","DOIUrl":"10.1016/j.jsv.2025.119326","url":null,"abstract":"<div><div>Wave propagation through structures like honeycombs and re-entrant corners has gained significant attention due to their unique propagation characteristics and meta-properties like, bandgaps and negative Poisson’s ratio, having potential for vibration suppression. The inclusion of inclined members increases the effective wave path within the unit cell, lowering the group velocity. This motivates us to explore various beam-like structures with geometric modulations like diamond, hexagonal, rectangular, and re-entrant unit cells. The spectral element-based formulation is applied to construct frequency-dependent global dynamic stiffness matrices of unit cells. These matrices facilitate the examination of wave propagation and attenuation, revealing comprehensive insights into periodic structures. The analysis encompasses combined 1D wave propagation involving axial, biaxial flexure (bending and shear), and torsion. Complete attenuation bandgaps for all six wave types, with mode coupling and wave locking are found, identified from the dispersion diagrams, as key mechanisms influencing the dynamic behavior. Frequency response functions (FRFs) validate the methodology, showing minimal or no response within attenuation bandwidths. Further, numerical validation and experimental investigation of the frequency responses of the structures has been conducted. Lastly, the study explores the impact of unit cell geometry and orientation on bandgap widening and attenuation levels.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119326"},"PeriodicalIF":4.9,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860682","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 study of parametric resonances of silicone cord induced by pulsating axial force","authors":"Andrzej Czerwiński","doi":"10.1016/j.jsv.2025.119387","DOIUrl":"10.1016/j.jsv.2025.119387","url":null,"abstract":"<div><div>This paper presents the results of an experimental investigation into the dynamics of a silicone cord subjected to a pulsating tensile force. The system is examined to identify dynamic instabilities, with particular focus on the phenomenon of parametric resonance. Two measurement methods were used: a contact method using accelerometers and a non-contact method using two high-speed cameras. The recorded signals were subsequently analysed to gain insight into the system’s motion during resonant vibrations. To analyse the motion of the system in more depth, a numerical method was proposed to determine the mode shapes of the individual vibration components involved in parametric resonance. In the studied system, instability ranges were determined and identified, and the effects of amplitude and excitation frequency on the resulting vibrations were investigated. The study revealed diverse dynamic behaviours, including simple parametric resonances with periodic, polyharmonic, planar vibrations, as well as combination resonances involving more complex, non-periodic, spatial motion. Vibrations were examined both in two-mode combination resonances and in regions where multiple types of resonances were simultaneously excited. Especially in the latter cases, the nature of the motion of the system is particularly complex.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"619 ","pages":"Article 119387"},"PeriodicalIF":4.9,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852218","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}