Journal of Sound and Vibration最新文献

{"title":"Multirotor noise control using synchrophasing under nonstationary conditions","authors":"Vítor T. Valente,&nbsp;Eric Greenwood,&nbsp;Eric N. Johnson","doi":"10.1016/j.jsv.2026.119673","DOIUrl":"10.1016/j.jsv.2026.119673","url":null,"abstract":"<div><div>The growing presence of unmanned aerial vehicles (UAVs) in urban areas has raised increasing concern about their noise emissions. Although UAVs hold promise for improving urban mobility, the noise generated by their propellers can be disruptive and remains a significant barrier to public acceptance. Previous studies showed that radiated noise in one or more directions of these vehicles can be reduced by synchronizing the phase relationships between multiple rotors on the aircraft. This paper expands the experimental analysis of this concept by focusing on nonstationary acoustic conditions while analyzing attenuation and amplification cases. These conditions include changing the target region location, changing the angular velocity set point, changing the target region location and velocity set point at the same time, and also generating torques. A small hexacopter mounted in an anechoic chamber is used for the experimental evaluation. Results suggest a difference of 12 dB can be achieved when comparing attenuation and amplification cases for the varying target location. Predictions show larger differences when analyzing only tonal components. When generating torques, experimental measurements suggest that even in a worst-case scenario, where motors are grouped into four distinct categories based on similar angular velocity set points, a noise reduction of approximately 3 dB to 4 dB can be achieved.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119673"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146057601","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 planetary roller screw mechanism with time-varying mesh stiffness in non-circular gear engagement","authors":"Qianjin Xu ,&nbsp;Shangjun Ma ,&nbsp;Yao Zhang ,&nbsp;Linping Wu ,&nbsp;Maodong Niu ,&nbsp;Kan Liu","doi":"10.1016/j.jsv.2026.119665","DOIUrl":"10.1016/j.jsv.2026.119665","url":null,"abstract":"<div><div>The Planetary Roller Screw Mechanism (PRSM) enables high-precision power transmission via synchronized meshing of thread pairs and modified non-circular gear pairs. While the thread pairs maintain continuous contact, the non-circular gears exhibit periodic engagement-disengagement due to their helix-cut profiles. This inherent disparity in meshing mechanisms establishes the gear pair as the primary vibration excitation source. This study analytically resolves the time-varying mesh stiffness (TVMS) of non-circular gears and thread-pair contact stiffness to construct a multi-degree-of-freedom coupled dynamic model using lumped-parameter theory. The simulated vibration modes—classified as torsional, transverse, and roller modes—yield dynamic responses including displacement, velocity, and acceleration spectra for all components. Experimental validation confirms the model’s accuracy. The study found that the average TVMS of non-circular gears is 28 % lower than that of standard gears, and the internal ring gear is the vibration source of the PRSM system. The findings provide a quantifiable design basis for vibration control and condition monitoring in high-performance PRSM systems.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119665"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146057603","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":"Broadband high-amplitude pressure wave generation via tunable stepped acoustic resonator","authors":"Yanan Yu ,&nbsp;Wen He ,&nbsp;Jie Zhou ,&nbsp;Suan Xu","doi":"10.1016/j.jsv.2026.119693","DOIUrl":"10.1016/j.jsv.2026.119693","url":null,"abstract":"<div><div>An inverse design method of tunable stepped acoustic resonator is proposed for broadband high-amplitude pressure wave generation. The tunable stepped acoustic resonator incorporates the mechanically adjustable narrow tube and piston tube within the chambers of wide and narrow tubes to achieve tunable size parameters for getting appropriate resonance. A frequency equation for computing resonant frequency and an analytical model for computing resonance acoustic pressure are used as the objective functions. The constraints are determined according to the microphone calibration requirements and the correlation between resonant frequencies and size parameters of the stepped acoustic resonator. And then, the inverse design method is proposed to determine the different size parameters of tunable stepped acoustic resonator with optimal resonance acoustic field characteristics at various target calibration frequencies. According to the design results, a broadband high sound pressure generation device based on the tunable stepped acoustic resonator is established and a tuning scheme is presented. The performance tests of the broadband high sound pressure generation device are conducted. The experiment results suggest that the developed device can produce the pressure waveforms with high amplitude and low distortion over the frequency range of 250 Hz∼1000 Hz.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119693"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171567","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":"FAME–SSA: A fast adaptive multivariate decomposition method for unsupervised damage detection in built infrastructures","authors":"Lakhadive Mehulkumar R ,&nbsp;Anshu Sharma ,&nbsp;Basuraj Bhowmik","doi":"10.1016/j.jsv.2026.119676","DOIUrl":"10.1016/j.jsv.2026.119676","url":null,"abstract":"<div><div>Structural Health Monitoring (SHM) techniques are continuously challenged by the complexities and noise inherent in large-scale multidimensional data. Empirical Mode Decomposition (EMD) is effective for non-stationary signals but struggles with multichannel data. Multivariate EMD (MEMD) addresses this but still suffers from noise sensitivity, mode mixing, and incomplete frequency extraction. Fast and Adaptive Multivariate EMD (FA-MVEMD) improves on MEMD by using intelligent strategies to enhance accuracy and performance. This study introduces a novel methodology for modal identification and damage detection: Fast and Adaptive Multivariate Empirical Singular Spectrum Analysis (FAME-SSA). By combining the adaptive decomposition capability of FA-MVEMD with the trend extraction and noise separation strengths of Singular Spectrum Analysis (SSA), the proposed approach improves the accuracy and robustness of feature extraction from structural responses. A key innovation of FAME-SSA is the application of Hotelling’s T² and Squared Prediction Error (SPE) statistics for damage detection. The method is validated through extensive <em>numerical simulations, experimental data</em> from a <em>wind turbine structure</em>, and real-world SHM data from the <em>Lysefjord Bridge</em>. The results demonstrate that FAME-SSA outperforms conventional methods, making it a promising tool for real-time SHM in complex and noisy environments under challenging conditions.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119676"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171604","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":"Panel flutter suppression via combined-nonlinear acoustic black hole","authors":"Zhuogeng Zhang ,&nbsp;Hongli Ji ,&nbsp;Hongya Qian ,&nbsp;Kuikui Zhong ,&nbsp;Jinhao Qiu ,&nbsp;Li Cheng","doi":"10.1016/j.jsv.2026.119694","DOIUrl":"10.1016/j.jsv.2026.119694","url":null,"abstract":"<div><div>This study introduces an innovative combined-nonlinear acoustic black hole (CNABH) structure, integrating a nonlinear part and an acoustic black hole (ABH) part, for panel flutter suppression. To investigate its aeroelastic behavior, the coupled aeroelastic equations of panel with CNABH are derived by coupling the respective governing equations of the panel, ABH, and nonlinear part. The flutter suppression effect is numerically assessed via an iterative solution method, thus verifying CNABH’s feasibility. Results show that the CNABH can increase the panel's flutter critical boundary by 27.8%, outperforming a single nonlinear energy sink (NES) or an ABH, highlighting its advantages. Frequency analysis under varying boundary conditions clarifies that the panel flutter suppression performance of the CNABH critically depends on the frequency adaptability between the ABH part and the nonlinear part. Meanwhile, energy flow analysis reveals that the CNABH effectively integrates the energy sink characteristics of the nonlinear part and the ABH part, enabling the two parts to work synergistically to achieve rational energy distribution and efficient dissipation, thereby suppressing panel flutter more effectively. In summary, this work provides a new approach for panel flutter suppression and deepens the understanding of the nonlinear-ABH synergistic effect in aeroelastic control.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119694"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171566","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":"Efficient explicit method of acquiring frequency-response curves for nonlinear vibrating systems","authors":"Ping Zhou ,&nbsp;Jiahui Chang ,&nbsp;Songhan Zhang ,&nbsp;Lei Hou ,&nbsp;Wei Fan ,&nbsp;Hui Ren","doi":"10.1016/j.jsv.2026.119689","DOIUrl":"10.1016/j.jsv.2026.119689","url":null,"abstract":"<div><div>The characteristics of nonlinear vibrating systems are universally investigated by accurately describing the amplitude of the response across a range of frequencies, which is referred to as the frequency-response curve. These curves are conventionally obtained by the arc-length continuation method, where a set of nonlinear algebraic equations is implicitly solved using Newton’s method at each point on the curve. This process poses a great challenge in terms of efficiency and robustness, because rough predictive values for Newton’s iterations (especially at turning points) lead to poor convergence when large step sizes are adopted to reduce computational cost. Therefore, efficient explicit methods tailored for accurately acquiring frequency-response curves are highly attractive. This work develops a new and robust method that allows for efficient explicit calculation of frequency-response curves. The key is to transform the previous process, where nonlinear algebraic equations are implicitly solved at each point on the response curve, into solving ordinary differential equations (ODEs) that are well-suited for explicit integrators. The explicit Runge-Kutta-Chebyshev integrator with an adaptive-step-size strategy is adopted to solve the ODEs. Its stability domain can be adaptively extended during the simulation, reaching a good tradeoff between stability and efficiency while simultaneously keeping local errors bounded. This capability ensures efficient explicit calculation of response curves with accessible large step sizes. Several numerical examples demonstrate the advantages and feasibility of the proposed method. The proposed method contributes to the efficient analysis of the frequency response of nonlinear systems, which is crucial in potential applications such as the agile design of structure parameters.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119689"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171607","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":"Exploring physics-enhanced neural operators for predicting vehicle-bridge dynamics: From 1-DOF to 13- DOF vehicle models","authors":"Jin Zhu ,&nbsp;Yijun Zhu ,&nbsp;Mengxue Wu ,&nbsp;Xingyu Lan","doi":"10.1016/j.jsv.2026.119686","DOIUrl":"10.1016/j.jsv.2026.119686","url":null,"abstract":"<div><div>Accurate and efficient prediction of coupled vehicle-bridge dynamics (CVBD) is essential for structural safety assessment, ride comfort evaluation, and intelligent maintenance. While traditional numerical solvers offer high fidelity, they are often computationally expensive, especially in large-scale simulations or real-time evaluations involving parameter uncertainty and stochastic excitations. This study explores the applicability of Fourier neural operators (FNOs) as surrogate models for CVBD prediction across systems of varying complexity, from simplified 1 degree of freedom (1-DOF) to full-scale 13 degrees of freedom (13-DOF) vehicle models. Rather than emphasizing physics-informed constraints alone, the investigation systematically compares different input feature designs, output strategies, and loss function formulations. Results show that incorporating road roughness derivatives and using wider normalization scales greatly enhance prediction accuracy, particularly for acceleration responses. For high-dimensional systems, the best performance is achieved when displacement, velocity, and acceleration are predicted jointly using a weighted data loss function, without the need for additional physics-based terms. These findings provide valuable insights for constructing FNO-based surrogate models for CVBD applications and emphasize the importance of input-output design and loss selection in achieving both accuracy and efficiency.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119686"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171606","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":"On reflection of cylindrical waves in a solid half-space due to a line P source","authors":"Ya-Zhou Liu ,&nbsp;Yeong-Bin Yang ,&nbsp;Hsiao-Hui Hung ,&nbsp;Jie Li ,&nbsp;Ze-Yang Zhou","doi":"10.1016/j.jsv.2026.119695","DOIUrl":"10.1016/j.jsv.2026.119695","url":null,"abstract":"<div><div>This paper presents an intuitive method for deriving the asymptotic solution of all detectable waves reflected at the free surface due to the incidence of a line P source, i.e., P- and S-disturbances that propagate horizontally at their respective velocities with a decrease rate of <span><math><msup><mrow><mi>x</mi></mrow><mrow><mo>−</mo><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msup></math></span> (where <span><math><mi>x</mi></math></span> denotes the horizontal distance). At first, the line P source is regarded as a combination of plane-wave components incident with real angles and those incident with imaginary angles. Based on the theory of plane-wave reflection with an extension to the range of imaginary incidences, the two transmissible plane-wave incidences of small real angle and of finite imaginary angle which directly lead to the actual P- and S-disturbances at large distances, respectively, are identified. Consequently, the geometric ray representation for near-field reflection associated with the S-disturbance is clarified after a modification upon the conventional theory. In analogy with the classical plane-wave reflection theory, the reflected waves are obtained by multiplying the fully reflected waves due to the incident cylindrical wave by the corresponding reflection coefficients, which are determined by the stress-free condition at the surface. Hence, the present solution can capture all the reflected waves with a decrease rate of <span><math><msup><mrow><mi>x</mi></mrow><mrow><mo>−</mo><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msup></math></span>, unlike the conventional asymptotic solution. This intuitive method not only simplifies the calculation of asymptotic solutions using the method of steepest descent or stationary phase, but is physically more meaningful via establishment of a direct link between the reflection of plane waves and that of cylindrical waves. Results show that the S-disturbance due to a shallow or slowly oscillating line P source becomes significant especially for the responses beneath the surface. In contrast, the S-disturbance was recognized as a minor response and ignored in many existing studies.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119695"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171605","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 scattering in metamaterials with localized defects","authors":"Charles Dorn","doi":"10.1016/j.jsv.2026.119663","DOIUrl":"10.1016/j.jsv.2026.119663","url":null,"abstract":"<div><div>This work presents a semi-analytical multiple scattering formulation for elastic waves in periodic media with defects. We model the scattering of Bloch waves interacting with defects of arbitrary strength that are on a length scale much smaller than relevant wavelengths. The basis for the proposed framework is the far-field asymptotic approximation of the lattice Green’s function represented in terms of Bloch eigenfunctions. Thus, it is applicable to any periodic material whose dispersion relations and corresponding mode shapes are available either analytically or numerically. The local perturbation method is used to resolve the singularity in the far-field lattice Green’s function, enabling the derivation of a tractable multiple scattering system. Examples are presented showing agreement between the scattering model and high-fidelity transient simulations in the context of a mass-spring network and a beam-based metamaterial. The proposed modeling framework is computationally efficient, opening the door to inverse problems such as the design of defects for wave manipulation. We present the inverse design of a set of defects embedded in a periodic metamaterial for wave guiding, demonstrating that our scattering model is an effective tool for exploring the vast design space of defect engineering in metamaterials.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"628 ","pages":"Article 119663"},"PeriodicalIF":4.9,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079963","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":"Corrigendum to “Nonlinear vibration analysis of compressible constrained layer damping using a frequency- and load-dependent virtual material” [J. Sound Vib. 626 (2026) 119626]","authors":"Yongbu Jin,&nbsp;Dong Wang,&nbsp;Di Yuan,&nbsp;Yihan Du,&nbsp;Qiang Wan","doi":"10.1016/j.jsv.2026.119662","DOIUrl":"10.1016/j.jsv.2026.119662","url":null,"abstract":"","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"628 ","pages":"Article 119662"},"PeriodicalIF":4.9,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036174","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}