Journal of Sound and Vibration最新文献

{"title":"Effect of piston ring configuration on squeeze film damper performance with focus on axial and slit positions","authors":"Hailun Zhou ,&nbsp;Gangyi Cao ,&nbsp;Xunyan Yin ,&nbsp;Dengfeng Wu ,&nbsp;Maoquan Tian","doi":"10.1016/j.jsv.2025.119463","DOIUrl":"10.1016/j.jsv.2025.119463","url":null,"abstract":"<div><div>The piston ring is an important sealing component of the squeeze film damper (SFD). Identifying the mechanism through which the piston ring installation state affects damping characteristics is crucial for optimizing the design of SFD. This research first optimized the design criteria for the piston ring suitable for SFD, based on the frictional torque balance equation and the elastic force threshold equation of the piston ring. Subsequently, a Computational Fluid Dynamics (CFD) model considering two-phase flow phenomena was developed, and the effects of the axial installation position and the slit position of the piston ring on the damping performance were studied. The research demonstrates that the axial installation position of the piston ring significantly affects the sensitivity of damping to the lateral clearance, with sensitivity reaching its maximum when the piston ring is installed at the center of the groove. The installation position of the slit alters the distribution pattern of the transient oil film force, based on which a method for identifying the optimal installation region of the slit is proposed. Finally, experiments were conducted to verify the accuracy of the numerical simulation method, providing a foundation and technical support for the optimized SFD design.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"621 ","pages":"Article 119463"},"PeriodicalIF":4.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155584","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":"Understanding of tile hollow sound","authors":"Keyan Ji ,&nbsp;Zigen Song ,&nbsp;Zixin Ye ,&nbsp;Qingzhao Kong","doi":"10.1016/j.jsv.2025.119462","DOIUrl":"10.1016/j.jsv.2025.119462","url":null,"abstract":"<div><div>Humans hear the hollow by tapping, as the tile hollow sound embeds information about the potential risk of tile detachment, which is interpreted through auditory perception. Correspondingly, automated methods assess hollow by extracting the information embedded in digital sound, which acts as a silent narrator, conveying information through specific digital expressions. Understanding the expressions is key to accurately extracting information and identifying hollow sounds. The purpose of this study is to explore how the amplitude-frequency expression of digital sound conveys information about hollow and other factors, with an emphasis on the innovative use of hollow sound simulation, supported by experiments. The study found that controlling a consistent and required tapping force to obtain high-quality sounds is crucial to making the hollow information noticeable. In the amplitude-frequency representation of sound, the hollow information is expressed through a shift in the main peak frequency, where a lower frequency corresponds to a larger hollow. This offers a useful perspective for gaining a deeper understanding of hollow sound and improving the accuracy of hollow detection in future studies.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"620 ","pages":"Article 119462"},"PeriodicalIF":4.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155640","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":"Homogenization model for a dense elastic medium of cylindrical scatterers and based on a realistic pair correlation function","authors":"N. Khalid ,&nbsp;M. Darmon ,&nbsp;J.-F. Chaix","doi":"10.1016/j.jsv.2025.119442","DOIUrl":"10.1016/j.jsv.2025.119442","url":null,"abstract":"<div><div>Multiple scattering effects due to a random distribution of identical cylindrical inclusions in an elastic medium are investigated. The approach is based on the analysis proposed by Fikioris and Waterman. The solution of the developed modal equations yields the effective wavenumbers of elastic coherent waves. Attention is made in this paper to a more realistic description of scatterers’ distribution in the host medium: this distribution is taken into account in modeling by introducing the notion of pair correlation function. The existing Conoir and Norris approach has been established by using the Hole Correction as pair correlation function, which simplifies the description of scatterers’ distribution and may lead to unphysical results for dense media. New formulas for the effective wavenumbers are proposed here by generalization of the latter theory and enable the use of any pair correlation function for possible application to dense media. The new generalized analytical model coupled to a realistic pair correlation function is compared to the previous approach in different materials configurations and validated for concrete structures by comparison to numerical simulations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"620 ","pages":"Article 119442"},"PeriodicalIF":4.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097132","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 the power law of tyre/road contact forces versus rolling speed","authors":"M.N. Assemien ,&nbsp;S. Pouget ,&nbsp;A. Le Bot","doi":"10.1016/j.jsv.2025.119456","DOIUrl":"10.1016/j.jsv.2025.119456","url":null,"abstract":"<div><div>The noise emitted in environment by vehicles rolling on road results from the mechanical interaction between the asperities of asphalt and the tyre tread. This study aims to assess the acoustic performance of different asphalt concretes by measuring the time-fluctuation of contact force. We performed measurements of the normal contact force on various asphalt samples. We report that the dynamic component of contact force, responsible of the acoustical emission, increases with rolling speed following the scaling law <span><math><mrow><msub><mrow><mi>f</mi></mrow><mrow><mi>RMS</mi></mrow></msub><mo>∝</mo><msup><mrow><mi>V</mi></mrow><mrow><mi>m</mi></mrow></msup></mrow></math></span> where <span><math><mrow><mi>m</mi><mo>=</mo><mn>1</mn><mo>.</mo><mn>6</mn><mspace></mspace><mo>±</mo><mspace></mspace><mn>0</mn><mo>.</mo><mn>2</mn></mrow></math></span>. We discuss the possible origins of the exponent <span><math><mi>m</mi></math></span> in terms of contact regimes.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"620 ","pages":"Article 119456"},"PeriodicalIF":4.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119450","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":"Design of locally resonant acoustic coatings using Bayesian inference","authors":"Karthik Modur ,&nbsp;Abhinav Konchery ,&nbsp;Jonas M. Schmid ,&nbsp;Gyani Shankar Sharma ,&nbsp;Alexei Skvortsov ,&nbsp;Ian MacGillivray ,&nbsp;Caglar Gurbuz ,&nbsp;Steffen Marburg ,&nbsp;Nicole Kessissoglou","doi":"10.1016/j.jsv.2025.119439","DOIUrl":"10.1016/j.jsv.2025.119439","url":null,"abstract":"<div><div>A Bayesian approach for the inverse design of acoustic coatings for broadband sound absorption is presented. The acoustic coating comprises a soft viscoelastic material submerged in water and attached to a steel backing plate. The coating is embedded with layers of resonant inclusions corresponding to cavities and hard scatterers yielding monopole and dipole sound scattering, respectively. The acoustic performance of the coating is primarily governed by strong wave scattering at frequencies around the resonance frequency of the inclusions, and enhanced wave scattering due to resonance coupling between adjacent inclusions. Designing an acoustic coating for a targeted performance presents a challenge due to the competing and often conflicting influence of several coating parameters corresponding to the material properties of the coating, the geometric and material properties of the inclusions, and the number of inclusion layers. This challenge is addressed using a dual-level Bayesian inference approach for targeted performance based on sound absorption by the coating. Parameter estimation is employed to determine the geometric dimensions of the inclusions within each layer, while model selection identifies the number of inclusion layers and material of the inclusions within each layer. The dual-level Bayesian approach is validated against coating designs of increasing complexity. By exploiting the resonances associated with different designs, a physics informed design of a coating with high broadband sound absorption is proposed.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"620 ","pages":"Article 119439"},"PeriodicalIF":4.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155639","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":"Coupled axial-lateral-torsional stochastic dynamics of a rotor-bearing system subjected to periodic pulse and unbalanced excitations","authors":"Chao Fu ,&nbsp;Heng Zhao ,&nbsp;Yaqiong Zhang ,&nbsp;Longxi Zheng ,&nbsp;Kuan Lu","doi":"10.1016/j.jsv.2025.119461","DOIUrl":"10.1016/j.jsv.2025.119461","url":null,"abstract":"<div><div>In rotor-bearing systems, the coupling effects between axial, lateral, and torsional vibrations have a significant impact on dynamic characteristics, which become even more complex under unsteady excitation conditions. This study investigates the stochastic axial-lateral-torsional coupled vibration of a pulse detonation engine rotor system subjected to combined periodic pulse and unbalanced excitations. By considering key uncertainties such as geometric deviations, material properties, and assembly tolerances, this work offers a comprehensive analysis of the dynamic characteristics and the uncertainty propagation mechanisms of pulse detonation engine rotor system for the first time. To address the challenges posed by high-dimensional and strongly coupled effect, a non-intrusive hybrid surrogate model polynomial chaos-Kriging is developed. The model effectively characterizes the complex relationship between uncertain inputs and system coupled responses, and significantly improves the efficiency and accuracy of uncertainty quantification. The analysis encompasses modal responses, transient responses during the startup phase, and steady-state behaviors during constant speed operation. The global sensitivity analysis is performed to identify the influence of various structural parameters on different response modes. The results reveal that the system exhibits distinct sensitivity to bearing properties, geometric dimensions, material properties, and excitation amplitudes under different operating conditions. This study not only enhances the understanding of the coupled dynamic mechanisms in pulse detonation engine rotor systems but also provides a theoretical foundation and modeling framework for structural design, performance optimization, and reliability improvement.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"621 ","pages":"Article 119461"},"PeriodicalIF":4.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119451","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":"Nonlinear optimal and multi-loop flatness-based control for the 5-DOF rotor and AMB system","authors":"G. Rigatos","doi":"10.1016/j.jsv.2025.119444","DOIUrl":"10.1016/j.jsv.2025.119444","url":null,"abstract":"<div><div>The 5-DOF rotor and active magnetic bearing (AMB) system exhibits strong nonlinearities and multi-variable dynamics and its stabilization and control is a non-trivial task. In this article the control problem for the 5-DOF rotor and active magnetic bearing system is solved with (i) a nonlinear optimal control method (ii) a flatness-based control approach which is implemented in successive loops. To apply method (i) that is nonlinear optimal control, the dynamic model of the 5-DOF rotor and active magnetic bearing system undergoes approximate linearization at each sampling instance with the use of first-order Taylor series expansion and through the computation of the associated Jacobian matrices. The linearization point is defined by the present value of the system’s state vector and by the last sampled value of the control inputs vector. To compute the feedback gains of the optimal controller an algebraic Riccati equation is repetitively solved at each time-step of the control algorithm. The global stability properties of the nonlinear optimal control method are proven through Lyapunov analysis. To implement control method (ii), that is flatness-based control in successive loops, the state–space model of the 5-DOF rotor and active magnetic bearing system is separated into two subsystems, which are connected between them in cascading loops. Each one of these subsystems can be viewed independently as a differentially flat system and control about it can be performed with inversion of its dynamics as in the case of input–output linearized flat systems. The state variables of the second subsystem become virtual control inputs for the first subsystem. In turn, exogenous control inputs are applied to the second subsystem. The whole control method is implemented in two successive loops and its global stability properties are also proven through Lyapunov stability analysis. The proposed method achieves stabilization of the dynamics of the 5-DOF rotor and active magnetic bearing system without the need of diffeomorphisms and complicated state–space model transformations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"621 ","pages":"Article 119444"},"PeriodicalIF":4.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106889","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 analysis of viscoelastic rotor-bearing systems with fractional material damping","authors":"Gregor Überwimmer,&nbsp;Michael Klanner,&nbsp;Katrin Ellermann","doi":"10.1016/j.jsv.2025.119441","DOIUrl":"10.1016/j.jsv.2025.119441","url":null,"abstract":"<div><div>In rotordynamics, there is a broad range of applications for different types of rotors. Starting from slender rotors for applications in the medical industry to non-slender rotors in the energy industries. These industries require optimised rotors. The optimisation process increases the importance of understanding the vibrations occurring in the system and investigating the effects of new materials. In order to adequately address the complexity of the requirements, reduce computational costs, and enhance the safety of product design, it is necessary to employ an appropriate modelling approach and utilise efficient numerical simulation techniques. Consequently, a modelling approach has been developed to describe a viscoelastic rotor-bearing system valid for a wide frequency range. In order to represent all rotordynamic effects, including the destabilisation of a rotor, the internal damping is represented by fractional time derivatives. The rotor is modelled using Timoshenko beam theory and supported on anisotropic bearings, with an arbitrary unbalance. In this paper, an efficient and precise simulation of the rotor-bearing system is achieved using the Numerical Assembly Technique, which is described as a semi-analytical approach. Finally, a comparison is made between the applied fractional material damping model and a classical material model, and the influence of the fractional parameter is discussed.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"621 ","pages":"Article 119441"},"PeriodicalIF":4.9,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106891","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":"Design-space segmentation of an acoustic metamaterial for interpretability and insight","authors":"Oluwaseyi Ogun,&nbsp;John Kennedy","doi":"10.1016/j.jsv.2025.119443","DOIUrl":"10.1016/j.jsv.2025.119443","url":null,"abstract":"<div><div>Acoustic metamaterials (AMMs) offer promising capabilities for noise control and wave manipulation, but their nonlinear and multidimensional design spaces often conceal clear relationships between geometry and acoustic performance. In this study, a data-driven methodology is proposed to segment the AMM design space into interpretable clusters based on spectral similarity, using unsupervised learning techniques. A large dataset of simulated absorptivity spectra, derived from systematic geometric parameter variations, is clustered using k-means, revealing distinct performance regimes. To enhance interpretability and physical insight, each cluster is characterized through representative spectral profiles and statistical analyses of its governing geometric features. Building on this segmentation, a surrogate classifier is trained to predict cluster membership from a given spectral response, enabling reverse mapping from performance targets to spectral classes. Additionally, a design implication matrix is introduced to provide interpretable guidelines that link desired acoustic performance with dominant geometric trends. To enable automatic geometry retrieval from the predicted cluster, a nearest-neighbor heuristic (NNH) is employed to return <span><math><mi>m</mi></math></span> user-defined geometries corresponding to the target spectrum within the localized design subspace. This integrated framework facilitates targeted design exploration and offers a flexible, efficient, and interpretable alternative to conventional deep learning methods. It lays the groundwork for embedding interpretability into machine learning-assisted metamaterial design, thereby enabling actionable insights into anticipated system behavior.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"621 ","pages":"Article 119443"},"PeriodicalIF":4.9,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106890","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 analytical approach for free vibration and modal reordering response of sandwich beams/panels under in-plane compression","authors":"Pengyu Cao ,&nbsp;Kangmin Niu ,&nbsp;Na Li ,&nbsp;Kai Wang ,&nbsp;Feng Wan ,&nbsp;Tao Zhang ,&nbsp;Liying Li","doi":"10.1016/j.jsv.2025.119452","DOIUrl":"10.1016/j.jsv.2025.119452","url":null,"abstract":"<div><div>This study systematically investigates the free vibration characteristics of sandwich beams/panels subjected to initial in-plane compressive loads, revealing a novel phenomenon of modal reordering. A new analytical model is developed to accurately characterize the dynamic behavior of sandwich structures under in-plane compressive loading and to determine their natural frequencies. Through dimensional analysis, the study identifies key dimensionless parameters governing the free vibration response, including the thickness ratio, stiffness ratio, and the ratio of compressive load to critical buckling load. The complex interplay among these parameters and their impact on the vibration behavior is subsequently explored in depth. A key finding of this study lies in uncovering the underlying mechanism of modal reordering. The results demonstrate that sandwich beams/panels with larger thickness ratios are more susceptible to mode transitions under compressive loading, while the stiffness ratio dictates the characteristics of higher-order modes prone to transition. As the compressive load increases, the frequency curves of these initially high-order modes progressively approach and eventually intersect with those of lower-order modes, leading to a reordering of the modal sequence, wherein originally high-order modes shift to lower frequencies. However, this phenomenon has largely been overlooked in prior research, primarily due to limitations in experimental studies, where the selection of sandwich structures did not encompass the parameter range necessary to observe modal reordering. Finally, a comparative analysis with experimental data and finite element simulations further validates confirms the accuracy of the theoretical predictions and the existence of the modal reordering phenomenon.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"620 ","pages":"Article 119452"},"PeriodicalIF":4.9,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155638","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}