Journal of Sound and Vibration最新文献

{"title":"An application of multi-scale vibration analysis of thin plate with a dense system of ribs in the detection of micro-scale imperfections","authors":"Jakub Marczak,&nbsp;Bohdan Michalak","doi":"10.1016/j.jsv.2025.119093","DOIUrl":"10.1016/j.jsv.2025.119093","url":null,"abstract":"<div><div>In this paper the analytical multi-scale vibration analysis of the periodic thin plate with a dense system of ribs is performed. It is assumed that the considered structure is burdened with certain imperfections, which can affect its dynamic behaviour. Eventually, basing on the free vibration analysis and short wave propagation issue, it is proved, that the presented averaged models are capable of detecting the small scale imperfections. It should be noticed, that such analysis is not possible with other known methods of analysis of periodic structures, such as the homogenisation method. The presented results prove both the correctness of the shown transformations and the superiority of the solution.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"610 ","pages":"Article 119093"},"PeriodicalIF":4.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847560","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":"Marker-free full-field approach for structural 3D vibration response measurement based on Gaussian process regression and pyramidal optical flow","authors":"Guang Li ,&nbsp;Yiming Zhang ,&nbsp;Zili Xu ,&nbsp;Manqing Qin ,&nbsp;Mengfu He ,&nbsp;Ajun Meng","doi":"10.1016/j.jsv.2025.119133","DOIUrl":"10.1016/j.jsv.2025.119133","url":null,"abstract":"<div><div>Vision-based measurement techniques are drawing attention due to their non-contact, flexible and efficient advantages. However, most existing techniques require artificial markers for stereo matching and monocular tracking. The marker-free techniques are difficult to achieve full-field stereo matching and currently only applicable to 2D vibration measurements. This paper proposes a novel marker-free full-field approach for 3D vibration response measurement. Firstly, stereo matching is considered a regression problem, and Gaussian process regression (GPR) is used to model the relationship between matching point pairs. With the dataset provided by feature point matching, marker-free stereo matching of full-field arbitrary points is efficiently achieved using trained GPR. Secondly, the pyramid optical flow is applied to marker-free visual tracking, which can simultaneously track the full-field matching point pairs in two video sequences without artificial markers. Finally, the 3D vibration responses are obtained by stereo camera calibration and 3D reconstruction. The accuracy and performance of the proposed approach are evaluated through vibration measurement tests on a thin-walled pipe. The vibration responses measured by the proposed approach are compared with those measured by the laser vibrometer, accelerometer, and digital image correlation approach. Besides, a modal analysis test on a thin plate is constructed in which the full-field response measured by the proposed approach is used as the input of the modal analysis. The results demonstrate that the proposed approach can accurately measure the 3D vibration responses. And it has excellent capability in marker-free full-field vibration measurements and great potential in modal analysis.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"610 ","pages":"Article 119133"},"PeriodicalIF":4.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865069","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":"Acoustic scattering by multi-layered gratings","authors":"Shiza B. Naqvi,&nbsp;Lorna J. Ayton","doi":"10.1016/j.jsv.2025.119083","DOIUrl":"10.1016/j.jsv.2025.119083","url":null,"abstract":"<div><div>Acoustic scattering by layered array gratings and diverse boundary conditions is considered by adapting the semi-analytic Fokas method to periodic geometries. The generalised Dirichlet-to-Neumann (DtN) map is solved numerically and the scattering solution is recovered through a Green’s integral representation. The boundary conditions on the array gratings include sound-hard, sound-soft and elastic. Acoustic scattering by layered array gratings with different periods is also discussed. Engineering applications include the use of layered perforated structures as anti-reflection coatings and anti-transmission coatings. The method is also presented as a baseline upon which to build a theoretical homogenisation model for effective impedance parameters for perforated structures.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"610 ","pages":"Article 119083"},"PeriodicalIF":4.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830261","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 spectrum modulation effect of multi-type bearing-supported rotor systems with combined misalignment faults","authors":"Zhiyuan Jiang ,&nbsp;Xianzhen Huang ,&nbsp;Liangshi Sun ,&nbsp;Yuping Wang ,&nbsp;Fusheng Jiang","doi":"10.1016/j.jsv.2025.119118","DOIUrl":"10.1016/j.jsv.2025.119118","url":null,"abstract":"<div><div>Multi-type bearing-supported rotor (MBR) systems leverage versatile bearing configurations to achieve broad applicability across industrial sectors. Inadequate assembly capabilities leading to pedestal-raceway misalignment will inevitably trigger operational hazards to the MBR system. In this regard, this paper develops a flexible model of the MBR system incorporating novel combined misalignment configurations. The dynamic analytical stiffness matrix for multi-type bearings has been derived based on implicit functions and the chain rule of differentiation. The bending-torsional coupling effect of the flexible MBR system is faithfully reproduced by combining the derived dynamic analytical stiffness with the Timoshenko beam theory. The frequency-capturing capabilities of the proposed model have been validated through a comprehensive comparison between theoretical, experimental, and developed models. Additionally, qualitative and quantitative comparisons are conducted between the healthy, static misalignment, dynamic misalignment, and combined misalignment modes from the perspectives of motion characteristics, time domain, and frequency domain. Vibration intensity and energy transfer analyses reveal distinct amplification and cancellation effects in combined misalignment scenarios. Systematic analysis identifies the characteristic frequencies and distinct mutual modulation effects inherent to combined misalignment. Additionally, the compensation mechanism of combined misalignment modes with multi-type bearing clearances has been revealed.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"609 ","pages":"Article 119118"},"PeriodicalIF":4.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839412","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":"Bistable DVR meta-structure: A reinforcement learning approach to vibration control","authors":"Shantanu H. Chavan ,&nbsp;Hrishikesh S. Gosavi ,&nbsp;Satya Sarvani Malladi ,&nbsp;Vijaya V.N. Sriram Malladi","doi":"10.1016/j.jsv.2025.119068","DOIUrl":"10.1016/j.jsv.2025.119068","url":null,"abstract":"<div><div>This research introduces a data-driven approach to vibration control, utilizing programmable bandgap metastructures tailored for applications such as cargo protection. Central to this design are bistable dynamic vibration absorbers (DVRs), which leverage a dual-state mechanism to enhance energy dissipation and improve vibration isolation under varying dynamic loads. The study employs a finite element approach to model the dynamic behavior of these metastructures, simulating their response to different forcing conditions. We then utilize artificial neural networks (ANNs) for predictive modeling of the metastructures’ characteristics to various DVR configurations, thereby enhancing their real-time adaptability. Additionally, we integrate reinforcement learning (RL) algorithms to dynamically adjust the bandgap behavior of the metastructures, allowing for on-the-fly tuning of their vibrational characteristics. This approach proves highly effective in scenarios with diverse vibration profiles. Experimental results demonstrate the efficacy of this comprehensive strategy, showcasing significant resonance frequency shifts and improved vibration absorption characteristics. This approach offers a robust solution for dynamic adaptation in various vibrational environments.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"610 ","pages":"Article 119068"},"PeriodicalIF":4.3,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808578","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 “Predicting wave attenuation in sonic crystals using complex band structures calculated by boundary DOF replacement Bloch Mode Synthesis (BDR-BMS) for Unfitted Boundary Meshes” [Journal of Sound and Vibration 601 (2025) 118928]","authors":"Yapeng Li,&nbsp;Yonghang Sun,&nbsp;Yung Boon Chong,&nbsp;Kian Meng Lim,&nbsp;Heow Pueh Lee","doi":"10.1016/j.jsv.2025.119088","DOIUrl":"10.1016/j.jsv.2025.119088","url":null,"abstract":"","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toward online stability margin tracking of Turbomachines via operational modal analysis","authors":"Nathali Dreher ,&nbsp;Tiago Machado ,&nbsp;Thomas Paulsen ,&nbsp;Ilmar Santos","doi":"10.1016/j.jsv.2025.119094","DOIUrl":"10.1016/j.jsv.2025.119094","url":null,"abstract":"<div><div>Proper design and monitoring of turbomachines are highly important for efficient and safe operation in industry. In the special case of turbomachines that contain seals, it is important to predict and avoid the steam whirl phenomenon. Steam whirl occurs when negative damping effects overtake positive damping effects, which leads to instability due to lateral vibration. The power level in which this phenomenon occurs sets the stability margin of the turbomachine. Predicting this phenomenon usually comprises modeling and testing machines during the design and commissioning stages. Design is quite challenging considering that accurate mathematical models are difficult to obtain and valid over a given operational range. Moreover, design and commissioning do not encompass changes due to deterioration and possible damage, which can change the stability margin during the machine's operation. Operational Modal Analysis (OMA) is used to extract modal parameters of systems during operation, with most applications related to civil structures. Turbomachines, in general, are non-linear and time-varying systems subjected to harmonic excitation, which hampers modal identification via OMA. Nevertheless, recent studies show that OMA's techniques have a lot of potential to support the condition monitoring of these systems. To contribute to this topic, this research proposes the estimation and tracking of the stability margin of a turbomachine with seals via Automated OMA (AOMA). Vibration signals from a turbomachine composed of a rotor supported by active magnetic bearings and containing annular gas seals are employed. The results show that different excitation conditions are required for modal identification and when adjusting these conditions, it is possible to extract good estimates of modes related to the foundation and the rotor, including the one that defines the instability margin. AOMA proves to be a promising tool for identifying the stability margin of turbomachines during operation, being valuable for condition monitoring.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"610 ","pages":"Article 119094"},"PeriodicalIF":4.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820532","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":"Modeling and control of air spring vibration absorbers with switchable natural frequencies using multiple auxiliary chambers","authors":"Gengbiao Chen ,&nbsp;Zhiwen Liu ,&nbsp;Tuo Zhang ,&nbsp;Lairong Yin","doi":"10.1016/j.jsv.2025.119115","DOIUrl":"10.1016/j.jsv.2025.119115","url":null,"abstract":"<div><div>This paper investigates the use of multiple auxiliary chambers to achieve air spring vibration absorbers with switchable natural frequencies. Using a triple-auxiliary-chamber (TAC) air spring as an example, the characteristics of passive and active TAC air springs are studied independently, with the active TAC air spring ultimately being applied to the semi-active absorber. The implementation of a PI controller effectively suppresses inherent disturbances in active environments, such as the periodic start-stop cycles of the air compressor, ensuring the stability of the air spring piston's static equilibrium position. An Fast Fourier Transform (FFT) algorithm is employed to detect the excitation frequency, with bandwidth correction enhancing sensor performance and improving frequency estimation accuracy. By sensing the excitation frequency and applying a rule-based vibration control strategy via the \"composite frequency response curve\" method, the number of auxiliary chambers in operation is adjusted in real time. This enables stepwise adjustment of the air spring's natural frequency, ultimately eliminating resonance in the controlled object within the 1–10 Hz range.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"609 ","pages":"Article 119115"},"PeriodicalIF":4.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828339","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 instability and parametric response of an eccentric rotating ring-shaped periodic structure","authors":"Zhenhang Wei ,&nbsp;Shiyu Wang ,&nbsp;Chunhua Xia ,&nbsp;Jixiang Wang ,&nbsp;Zhihao Li","doi":"10.1016/j.jsv.2025.119100","DOIUrl":"10.1016/j.jsv.2025.119100","url":null,"abstract":"<div><div>The eccentrically rotating ring-shaped periodic structures (RPSs) are rarely spotlighted despite their pervasiveness in engineering practice, let alone consideration of time-varying eccentricity. This work investigates the dynamic instability and parametric responses of an eccentrically rotating RPS attached by additional masses. The mathematical model is derived using Hamilton's principle by incorporating the kinetic and potential energies arising from eccentric rotation and additional masses. Dynamic instabilities of free and parametric vibrations, which are caused by the time-invariant and time-varying eccentricity, respectively, are predicted by classical vibration and Floquét theories, respectively. Furthermore, the modulation feedback method is used to analyze the frequency components of the parametric responses, which are verified by the Runge-Kutta method. The results show that the instability regions involving time-varying excitations exhibit nonlinear combination characteristics. Even if the time-varying excitation is not generated by periodic units, the changes in its topological structure can still affect the distribution of parametric instability. The frequency components of the parametric responses are composed of a linear combination of the principal vibration and excitation frequencies.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"610 ","pages":"Article 119100"},"PeriodicalIF":4.3,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829715","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":"Resonant topological metasurface for Rayleigh wave attenuation and energy localization in homogeneous and layered elastic half-spaces","authors":"Li Xiao ,&nbsp;Zhigang Cao ,&nbsp;Yifei Xu ,&nbsp;Xingbo Pu ,&nbsp;Yuanqiang Cai","doi":"10.1016/j.jsv.2025.119112","DOIUrl":"10.1016/j.jsv.2025.119112","url":null,"abstract":"<div><div>In this work, we design a resonant topological metasurface based on the Su-Schrieffer-Heeger model and investigate its energy localization and interaction with Rayleigh waves in both homogeneous and layered elastic half-spaces. To this aim, we establish a general analytical framework using the thin-layer method and multiple scattering theory. This approach allows us to calculate the spatially modulated frequency spectrum, revealing the presence of a topologically nontrivial bandgap (TNBG). Also, eigenfield and flux analyses capture a topologically protected interface mode (TPIM) at the interface between two domains with distinct topological unit cells. Further wave field analysis shows that the TPIM enables significant Rayleigh wave energy localization. Meanwhile, the TNBG exhibits dual attenuation mechanisms of Rayleigh-to-Rayleigh Bragg backscattering and Rayleigh-to-bulk wave conversion, demonstrating a strong wave attenuation capability. In addition, the topological metasurface displays robust performance against half-space stratification, as its topological properties remain unaffected by higher-order Rayleigh modes. It maintains great energy localization and excellent vibration mitigation performance in the layered elastic half-space. This resonant topological metasurface provides a promising new approach for low-frequency Rayleigh wave mitigation and energy harvesting in real foundations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"609 ","pages":"Article 119112"},"PeriodicalIF":4.3,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824094","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}