Journal of Sound and Vibration最新文献

{"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}

{"title":"A mesh based improved plane wave expansion method for complex 2-D phononic crystals","authors":"Wei Shen ,&nbsp;Gongye Zhang ,&nbsp;Haiping Yin ,&nbsp;Yu Cong ,&nbsp;Shuitao Gu ,&nbsp;Bin Yao","doi":"10.1016/j.jsv.2025.119015","DOIUrl":"10.1016/j.jsv.2025.119015","url":null,"abstract":"<div><div>This paper introduces a spectral method based on free triangular meshes, termed the mesh based improved plane wave expansion method (MIPWEM), aimed at simplifying the design and analysis of phononic crystals (PnCs) in complex scenarios. This method, built upon the improved plane wave expansion method (IPWEM) theoretical framework, incorporates free triangular meshes to approximate various complex geometries, significantly reducing the derivation costs associated with handling complex inclusions. By varying factors such as the number of plane waves and mesh generation, this paper investigates the computational efficiency of the proposed MIPWEM from different perspectives. Additionally, the method is successfully applied to compute cases with complex geometries. These results further validate the advantages of the new method in handling complex geometries, computational speed, and other aspects. The MIPWEM with superior efficiency, shows great potential for PnCs research in multiphysics and high-frequency applications.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119015"},"PeriodicalIF":4.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526593","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":"Identification of bridge modal parameter based on tire pressure monitoring of two-axle vehicle","authors":"Yipeng Zhu ,&nbsp;Chengyin Liu ,&nbsp;Jun Zhang","doi":"10.1016/j.jsv.2025.119020","DOIUrl":"10.1016/j.jsv.2025.119020","url":null,"abstract":"<div><div>In recent years, recognizing bridge modal parameter (MP) utilizing the vibration signals of passing vehicle has garnered significant research attention. To address the two major challenges in the practical engineering applications of this method, namely extracting vehicle-bridge contact point (CP) responses and eliminating the adverse effects of road roughness, this paper proposed a novel method for obtaining MP based on tire pressure variations of a two-axle test vehicle crossing the bridge. The process began by converting tire pressure variations into the relative displacement of the axle and contact point (RD of A-CP), which was then utilized in the vehicle vibration equations to solve for CP displacement. By subtracting CP displacements from two consecutive runs, the influence of road roughness can be eliminated. Subsequently, the residual response was subjected to variational mode decomposition (VMD) to obtain the modal components. The MP was identified by applying fast Fourier transform (FFT) and Hilbert transform (HT) to the decomposed components. Numerical simulations validated the adverse effects of roughness on MP extraction and demonstrated the effectiveness of the proposed elimination method. The responses from the two-axle vehicle's front and rear tires successfully identified the first three MPs, including frequencies and mode shapes. In field testing using an inspection vehicle, tire pressure variations effectively identified the first-order MP of the bridge.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119020"},"PeriodicalIF":4.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549623","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":"Passive velocity estimation of underwater targets based on the multitaper synchrosqueezing cross-spectrum","authors":"P.F. Song ,&nbsp;A.B. Zhao ,&nbsp;J. Hui ,&nbsp;J.B. Guo ,&nbsp;K.R. Wang","doi":"10.1016/j.jsv.2025.119021","DOIUrl":"10.1016/j.jsv.2025.119021","url":null,"abstract":"<div><div>A new velocity estimation method for maneuvering targets using a single sensor in ocean waveguides is proposed. Unlike the conventional cross-spectrum method, the proposed velocity estimation method can perform non-uniform velocity estimation. First, a new cross-spectrum signal model in a non-uniform velocity state is derived. The derivation result shows that the cross-spectrum acoustic field possesses time-varying frequency characteristics in the non-uniform velocity state. Second, based on the time-varying characteristics of the cross-spectrum, the multitaper synchrosqueezing cross-spectrum (MSSTC-S) method is proposed to obtain the maximum velocity estimation accuracy. Finally, simulations and experiments verify the effectiveness of the proposed method, and the results show that it can estimate the target non-uniform velocity in real time with good estimation accuracy.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"606 ","pages":"Article 119021"},"PeriodicalIF":4.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549625","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":"Negating self-induced parametric excitation in capacitive ring-based MEMS Coriolis vibrating gyroscopes","authors":"Davin Arifin,&nbsp;Stewart McWilliam","doi":"10.1016/j.jsv.2025.119016","DOIUrl":"10.1016/j.jsv.2025.119016","url":null,"abstract":"<div><div>Rate sensing performance of ring-based capacitive Coriolis Vibratory Gyroscopes (CVGs) is degraded by the presence of imperfections and self-induced parametric excitation caused by electrostatic nonlinearities as the drive amplitude increases. This paper investigates the feasibility of using electrostatic forces to negate self-induced parametric excitation for a ring based CVG having 8 electrodes uniformly spaced inside and outside the ring. A mathematical model is developed to describe sensor dynamics under operating conditions and negation of self-induced parametric excitation is achieved by including additional parametric pumping voltages that generate electrostatic forces in antiphase with the self-induced parametric excitation. Numerical results are obtained for the rate sensitivity, bias rate and quadrature error of the sense output as the drive amplitude is increased and it is found that negating self-induced parametric excitation can enhance device performance under specific conditions by enabling nonlinear frequency matching. The proposed approach is more effective for larger electrode spans and improves the linearity of the rate sensing performance with drive amplitude. Numerical results are presented which include a comparison with results obtained using the Finite Element method to validate the proposed approach.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119016"},"PeriodicalIF":4.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592876","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}