Journal of Sound and Vibration最新文献

{"title":"Research on fault feature extraction for planet-bearing using novel combination operator morphological filtering and stochastic resonance","authors":"Zhile Wang,&nbsp;Jiawei Fan,&nbsp;Yu Guo,&nbsp;Xing Chen,&nbsp;Wei Kang","doi":"10.1016/j.jsv.2025.119037","DOIUrl":"10.1016/j.jsv.2025.119037","url":null,"abstract":"<div><div>Vibration transmission path of planet-bearing varies with the revolution of the planet gear, resulting in complex sideband interference near the fault feature frequency. Additionally, gear meshing vibration and strong noise interference also increase the difficulty of fault feature extraction for planet-bearing. To address this, this paper introduces a novel combination operator morphological filtering (NCOMF) method to effectively reduce noise and enhance fault impact features. The structural elements of different scales match the local features of planet-bearing signals to obtain the morphological filtering results at multiple scales. Furthermore, this paper utilizes the cloud genetic algorithm to screen out the optimal weighting values of each scale. Teager energy operator statistical complexity measures index could be employed as a fitness function to evaluate the fault impact response of vibration signals. Consequently, the morphological filtering signals at different scales are bound with weights to optimally enhance the fault feature of planet-bearing inner ring. Subsequently, the weighted filtered signal is inputted into the piecewise tri-stable stochastic resonance (SR) system, which leverages noise benefits to enhance the fault vibration signal energy of planet-bearing inner ring. Ultimately, the fault feature of planet-bearing inner ring is successfully extracted using the combination of NCOMF and piecewise tri-stable SR system.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119037"},"PeriodicalIF":4.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592877","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":"An extended semi-analytical finite element method for modeling guided waves in plates with pillared metasurfaces","authors":"S. Mariani,&nbsp;A. Palermo,&nbsp;A. Marzani","doi":"10.1016/j.jsv.2025.119030","DOIUrl":"10.1016/j.jsv.2025.119030","url":null,"abstract":"<div><div>This work presents a semi-analytical finite element (SAFE) scheme for modeling guided waves in plates equipped with arrays of resonators, known as metasurfaces. The method requires only the finite element discretization of the waveguide’s cross-section, with the resonators’ dynamic effects incorporated as a traction condition on the plate surface. Through this approach, the general SAFE framework is extended to account for a metasurface of linear resonators atop the plate, thereby broadening its applicability to metamaterial design. Dispersion properties, including wave propagation and attenuation, band gap information, and wave shapes, are obtained by solving a linearized eigenvalue problem. Furthermore, the method enables the computation of both frequency and time responses for a generic forcing function at an arbitrary source–receiver distance. A viscoelastic steel plate, either in vacuum or in water, coupled to an array of mass–spring–dashpot oscillators, is considered, and Lamb, quasi-Lamb, and quasi-Scholte modes, existing in the fluid-coupled scenario, are computed and discussed. The algorithm offers enormous computational advantages over other techniques established in the field of metamaterials. Consequently, it can greatly aid the development of pillared metaplates and potentially other engineered structures, as the method can be further generalized to address waveguides of arbitrary cross-sections and anisotropic media.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119030"},"PeriodicalIF":4.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549371","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":"Experimental validation of a centrifugal double pendulum vibration absorber model","authors":"V. Mahé ,&nbsp;A. Renault ,&nbsp;A. Grolet ,&nbsp;H. Mahé ,&nbsp;O. Thomas","doi":"10.1016/j.jsv.2025.119032","DOIUrl":"10.1016/j.jsv.2025.119032","url":null,"abstract":"<div><div>This article deals with the experimental validation of a theoretical model describing the dynamics of a special class of centrifugal pendulum vibration absorbers, designed to reduce the torsional vibrations of rotating machines. The original architecture proposed in this work consists in cylindrical-shaped masses rolling onto each other and acting as double pendulum absorbers. The main interest of these double pendulums lies in the two antiresonances they generate on the main system, which allow to reduce the vibrations at two harmonic orders, unlike standard single pendulum absorbers. The measurements are conducted on an architecture with six double pendulums. They focus on the first rotor antiresonance in the linear and nonlinear regimes, and they are compared to theoretical results from the literature. To the authors’ knowledge, this is the first experimental observation of one of the rotor’s torsional antiresonances and the first experimental validation of a double pendulum absorber model.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119032"},"PeriodicalIF":4.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592875","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":"Solving 2-D Helmholtz equation in the rectangular, circular, and elliptical domains using neural networks","authors":"D. Veerababu,&nbsp;Prasanta K. Ghosh","doi":"10.1016/j.jsv.2025.119022","DOIUrl":"10.1016/j.jsv.2025.119022","url":null,"abstract":"<div><div>Physics-informed neural networks offered an alternate way to solve several differential equations that govern complicated physics. However, their success in predicting the acoustic field is limited by the <em>vanishing-gradient problem</em> that occurs when solving the Helmholtz equation. In this paper, a formulation is presented that addresses this difficulty. The problem of solving the two-dimensional Helmholtz equation with the prescribed boundary conditions is posed as an unconstrained optimization problem using <em>trial solution method</em>. According to this method, a trial neural network that satisfies the given boundary conditions prior to the training process is constructed using the technique of transfinite interpolation and the theory of R-functions. This ansatz is initially applied to the rectangular domain and later extended to the circular and elliptical domains. The acoustic field predicted from the proposed formulation is compared with that obtained from the two-dimensional finite element methods. Good agreement is observed in all three domains considered. Minor limitations associated with the proposed formulation and their remedies are also discussed.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119022"},"PeriodicalIF":4.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679616","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":"A generalized model of mistuning for bladed disks","authors":"Troy Krizak,&nbsp;Kiran D’Souza","doi":"10.1016/j.jsv.2025.119003","DOIUrl":"10.1016/j.jsv.2025.119003","url":null,"abstract":"<div><div>Bladed disks always have variations between blades, known as mistuning, which is a large focus of research within the turbomachinery industry. When mistuning is present, the forced response shows localized amplification of blade responses. Due to the random nature of these variations, statistical analyses are conducted to understand sensitivity to mistuning. For high-dimensional models this is an intractable problem unless the model is reduced. To this end, reduced order models have been developed that enabled projection of mistuning to reduce computational expenses. These methods include techniques for reducing systems with many types of mistuning including modulus and geometric variations.</div><div>This work creates a generalized model of mistuning (GMM) that incorporates mistuning into the blade or disk. The GMM method has many of the benefits of previous mistuning models by being compact and only requiring sector level models. GMM utilizes an augmented Craig-Bampton component mode synthesis to decouple the blade and disk. These models are then projected onto a reduced modal space with mistuning applied. The combination of the blade and disk reduction occurs through the projection of the interface onto special disk-blade interface modes. Validation is performed for a few types of mistuning (e.g. stiffness, damping, geometric) to demonstrate the effectiveness of GMM.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119003"},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534144","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":"Added nonlinear damping of homogenized fluid-saturated microperforated plates in Forchheimer flow regime","authors":"Lucie Gallerand ,&nbsp;Mathias Legrand ,&nbsp;Raymond Panneton ,&nbsp;Philippe Leclaire ,&nbsp;Thomas Dupont","doi":"10.1016/j.jsv.2025.119018","DOIUrl":"10.1016/j.jsv.2025.119018","url":null,"abstract":"<div><div>Microperforated plates (MPP) are commonly used in the field of acoustics for sound absorption purposes. Recent research in the area of structural dynamics revealed that they also provide additional viscous damping in the low-frequency range because of fluid–solid interactions in the microperforation boundary layers, mainly through viscous friction mechanisms. It is now established that the vibratory behavior of these systems can be modeled using a homogenization procedure that produces a pair of coupled partial differential equations (PDEs) collectively governing the dynamics of both a structural plate and a fictitious virtual fluid plate. It has been observed that the added damping achieves its maximum at a <em>characteristic frequency</em> governed in particular by the size of the perforations. It is also known that these systems, which can be implemented in hostile environments such as aircraft turbines, involve nonlinear mechanisms for large mechanical and/or acoustic excitations. Two causes of nonlinearities can be distinguished: (i) one associated with a high amplitude harmonic speed of the fluid in the perforations, and (ii) one associated with large harmonic structural deformations. The two causes can combine under strong excitation. The present paper focuses exclusively on the first cause of nonlinearity. As the fluid velocity increases inside the perforations, resistive and inertial phenomena arise within the perforations, influencing the structural response. These effects can be partly captured analytically by the Forchheimer correction, materialized by an additional quadratic nonlinear damping term in the PDE governing the dynamics of the fictitious fluid plate. The system of equations is solved numerically, and sensitivity analyses are carried out on the added damping to the excitation level. The proposed model is validated by experiments conducted on an equivalent cantilevered MPP. Analytical and experimental results show that the added viscous damping depends on the relative fluid–solid velocity. The added damping effect can, depending on the perforation diameter, reach a maximum for a critical value of the relative fluid–solid velocity, with all other independent parameters fixed. In the nonlinear framework, the added damping is a function of space and depends not only on the perforation diameter as in the linear framework, but also on the relative fluid–solid velocity, and is defined as a function of space.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119018"},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519916","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":"Impact of constrained layer damping patches on the dynamic behavior of a turbofan bladed disk","authors":"Matteo Couet ,&nbsp;Jean-François Deü ,&nbsp;Lucie Rouleau ,&nbsp;Fabrice Thouverez ,&nbsp;Marion Gruin","doi":"10.1016/j.jsv.2025.119002","DOIUrl":"10.1016/j.jsv.2025.119002","url":null,"abstract":"<div><div>This work introduces a novel approach to modeling the impact of constrained layer damping patches on the behavior of rotating host structures, with a focus on bladed disks of turbofan engines. Constrained layer damping patches increase structural damping by dissipating the vibratory energy of the structure into heat through the viscoelastic properties of the elastomer material used in the patch. This paper proposes a dedicated numerical tool to model the behavior of such structures. A hyperelastic model is introduced to model the static response of the elastomer and a viscoelastic model is introduced into the dynamic problem. This hyperelastic–viscoelastic framework allows the modeling of the response of the constrained layer damping patch to large centrifugal forces and small dynamic perturbations. The dynamic behavior of an industrial bladed disk is then computed within this framework and compared to experimental test data. The results of this comparison validates the proposed model and highlights the efficiency of the constrained layer damping patch, defined as the amount of damping added to the structure, for this type of structures.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119002"},"PeriodicalIF":4.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488511","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":"Uncertainty analysis of limit cycle oscillations in nonlinear dynamical systems with the Fourier generalized Polynomial Chaos expansion","authors":"Lars de Jong,&nbsp;Paula Clasen,&nbsp;Michael Müller,&nbsp;Ulrich Römer","doi":"10.1016/j.jsv.2025.119017","DOIUrl":"10.1016/j.jsv.2025.119017","url":null,"abstract":"<div><div>In engineering, simulations play a vital role in predicting the behavior of a nonlinear dynamical system. In order to enhance the reliability of predictions, it is essential to incorporate the inherent uncertainties that are present in all real-world systems. Consequently, stochastic predictions are of significant importance, particularly during design or reliability analysis. In this work, we concentrate on the stochastic prediction of limit cycle oscillations, which typically occur in nonlinear dynamical systems and are of great technical importance. To address uncertainties in the limit cycle oscillations, we rely on the recently proposed Fourier generalized Polynomial Chaos expansion (FgPC), which combines Fourier analysis with spectral stochastic methods. In this paper, we demonstrate that valuable insights into the dynamics and their variability can be gained with a FgPC analysis, considering different benchmarks. These are the well-known forced Duffing oscillator and a more complex model from cell biology in which highly non-linear electrophysiological processes are closely linked to diffusive processes. With our spectral method, we are able to predict complicated marginal distributions of the limit cycle oscillations and, additionally, for self-excited systems, the uncertainty in the base frequency. Finally we study the sparsity of the FgPC coefficients as a basis for adaptive approximation.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119017"},"PeriodicalIF":4.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578989","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":"Investigation on the characteristics of rub-impact and misalignment faults in aero-engines during diving-climbing maneuver","authors":"Wentao Qi,&nbsp;Weimin Wang,&nbsp;Zhaopeng Gu,&nbsp;Jiale Wang,&nbsp;Kexin Han","doi":"10.1016/j.jsv.2025.119019","DOIUrl":"10.1016/j.jsv.2025.119019","url":null,"abstract":"<div><div>The increasingly compact design of aero-engines makes rotors highly susceptible to rub-impact and misalignment faults under the maneuver loads generated during flight. This paper aims to explore how these faults influence the dynamic characteristics of the rotors and their overall interaction with the casing within the framework of whole aero-engine. First, a dual-rotor-casing system model for a certain aero-engine is proposed, taking into account the coupling between the flexible deformation of the casing through transfer function and the interaction of rub-impact forces as well as the bearing forces. Then, the rub response of the dual-rotor-casing coupling system is calculated by the linear and nonlinear node-separated Hilber-Hughes-Taylor-α (HHT-α) method, which more closely aligns with the actual working conditions of aero-engines. The influence of rub-impact parameters, damper structure, and casing on rub response is explored, with further analysis of the characteristics of rub-misalignment coupled faults in rotor dynamics. Finally, the accuracy of the proposed dynamic model of whole aero-engine and the computational method under maneuvering flight conditions is validated through experiments. The results can provide new insight for rub preventing design for new high performance aircraft.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119019"},"PeriodicalIF":4.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549553","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 resonances and aeroacoustic feedback mechanisms occurring at a deep cavity with an overhanging lip","authors":"T. Brunner,&nbsp;T. Kroissenbrunner,&nbsp;A. Wurzinger,&nbsp;S. Schoder","doi":"10.1016/j.jsv.2025.119004","DOIUrl":"10.1016/j.jsv.2025.119004","url":null,"abstract":"<div><div>Flow-induced noise effects can significantly influence vehicle passengers’ comfort. Cavities resulting from clearances in the vehicle body represent one of the major source mechanisms of flow-induced sound generation. The objective of this study is to investigate a generic deep cavity with an overhanging lip, mimicking a door gap in a vehicle, that is overflowed by air at two different free stream velocities, <span><math><mrow><mn>26</mn><mo>.</mo><mn>8</mn><mspace></mspace><mi>m/s</mi></mrow></math></span> and <span><math><mrow><mn>50</mn><mspace></mspace><mi>m/s</mi></mrow></math></span>. The turbulent boundary layer and the acoustic waves interact with the cavity and form a dominant feedback mechanism. We focus on the details of the compressible turbulent flow structures and their variations concerning velocity and boundary layer thickness. Identification of different tonal modes and the assignment to their sound generation mechanisms can be challenging due to their complex interaction. We conduct a dynamic mode decomposition (DMD) analysis to get a profound insight into it. This method allows us to link the emitted tonal sounds to their origin. In doing so, we assigned previously unknown peaks in the pressure spectrum to their corresponding mechanisms. A particular vortex-edge interaction was found for the lower approaching velocity (<span><math><mrow><mn>26</mn><mo>.</mo><mn>8</mn><mspace></mspace><mi>m/s</mi></mrow></math></span>), namely an alternating sequence of complete clipping and a subsequent partial escape. The results from this study provide a deeper understanding of the flow-induced noise mechanisms in automotive cavities, offering potential pathways for designing quieter vehicles and thus reducing both passenger and community noise.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119004"},"PeriodicalIF":4.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512666","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}