Journal of Sound and Vibration最新文献

{"title":"Simultaneous multi-order vibration suppression by centrifugal double pendulum vibration absorber with experimental validation","authors":"Xingyu Zhou,&nbsp;Tsuyoshi Inoue,&nbsp;Akira Heya","doi":"10.1016/j.jsv.2025.119171","DOIUrl":"10.1016/j.jsv.2025.119171","url":null,"abstract":"<div><div>The centrifugal pendulum vibration absorber (CPVA) is commonly used to suppress torsional vibrations in automotive shaft systems. The centrifugal double pendulum vibration absorber (CDPVA)—a specialized type of CPVA—consists of two pendulums mounted in series on a rotor. In contrast to the CPVA, the CDPVA can simultaneously suppress torsional vibrations of two orders without the need to shorten the pendulum to address higher-order vibrations. This study clarified the vibration suppression mechanism of the CDPVA using the natural frequency diagram. Its effectiveness in simultaneously suppressing vibration with two orders was verified experimentally. Additionally, the nonlinear effects of the CDPVA were investigated through experimental observations. In detail, a numerical model was developed using a multibody dynamics approach, and nonlinear analysis was performed using the shooting method. Using the tuning equation, two sets of pendulums were tuned to specific vibration orders using their moments of inertia. Because the pendulums in each set have different inertia ratios, each set has a different capacity for suppressing vibrations at different orders. Further analysis was conducted to illustrate changes in the system’s natural frequency diagram and to clarify the effects of excitation amplitude and pendulum damping on system stability. Finally, experiments were conducted to verify the effectiveness of the CDPVA.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"612 ","pages":"Article 119171"},"PeriodicalIF":4.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935304","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":"Applicability of scale parameters in nonlocal shear deformation circular copper plates for axisymmetric vibrations","authors":"Kangle Han,&nbsp;Jiangong Yu,&nbsp;Hongmei Zhou","doi":"10.1016/j.jsv.2025.119173","DOIUrl":"10.1016/j.jsv.2025.119173","url":null,"abstract":"<div><div>Nonlocal shear plate theories, such as nonlocal classical plate theory (Non-CLPT), nonlocal first-order shear deformation theory (Non-FSDT) and third-order shear deformation theory (Non-TSDT), are widely utilized to analyze the mechanical properties of nano-scale. However, the applicability of nonlocal parameters for different theories has always been a challenging problem. The conventional Legendre polynomial method with good orthogonality is widely applied to investigate mechanical problems, but it exhibits significant limitations in addressing complex boundary problems such as partial derivatives and polynomial summations of displacement and stress. In this paper, the constraint representing the boundary is incorporated into the cycle of Legendre polynomials as an independent equation, which can effectively overcome these limitations. The improved method is employed to calculate the natural frequencies of axisymmetric vibrations in nonlocal shear deformation circular plates. The natural frequencies of the circular copper (Cu) plates with a face-centered cubic (FCC) lattice are determined by using fast Fourier transform (FFT) in the molecular dynamics (MD) simulation. The MD results are used to invert the nonlocal parameters for the clamped boundary circular Cu plate. The nonlocal plate results of the calibration parameters are consistent with the MD results. The results indicate that nonlocal parameters based on Non-CLPT are larger than those based on Non-FSDT and Non-TSDT, and this discrepancy increases with the increasing height-to-radius ratio. The nonlocal parameters increase as the radius and height increase, and the fitting functions follow linear and nonlinear relationships, respectively.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"612 ","pages":"Article 119173"},"PeriodicalIF":4.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928045","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":"The weak form method for acoustoelastic simulation with arbitrary prestress field","authors":"Maoyu Xu ,&nbsp;Changsheng Liu ,&nbsp;Yu Zhan","doi":"10.1016/j.jsv.2025.119148","DOIUrl":"10.1016/j.jsv.2025.119148","url":null,"abstract":"<div><div>Acoustoelastic theory has been widely used to evaluate the residual stress (or prestress). However, most of the research remains focused on plate under simple tensile stress condition. In this paper, a new approach is proposed: the use of weak form PDE modeling for acoustoelastic simulation. This method can perform acoustoelastic simulation for complex model with intricate prestress field. In the theory part, the weak form of acoustoelastic theory and semi-analytical finite element (SAFE) method is derived. In the numerical simulation part, two cases: the propagation direction is perpendicular to the prestress and parallel to the prestress are presented. The results are compared with the superposition of partial bulk wave (SPBW) method and the previously commonly used Effective Elastic Constants (EEC) method. The results show that the method proposed in this paper is highly accurate. Compared to the EEC method, this approach has no theoretical flaws and aligns more closely with the theoretical solution, especially in the low frequency range where the EEC method’s results are almost incorrect. This study provides an accurate method for the simulation of acoustoelasticity.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"612 ","pages":"Article 119148"},"PeriodicalIF":4.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902560","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 vibrations and parametric instability of pultruded angle section columns","authors":"Leyser P. Pires Filho,&nbsp;Paulo B. Gonçalves","doi":"10.1016/j.jsv.2025.119170","DOIUrl":"10.1016/j.jsv.2025.119170","url":null,"abstract":"<div><div>The nonlinear vibrations and parametric instability of pultruted fiber-reinforced polymer (FRP) angle columns are investigated in this work. The equal and unequal-leg angle sections are modeled as two interconnected plates using von Kármán's nonlinear plate theory for orthotropic materials. To account for bending about the major and minor axes, as well as torsion, suitable interpolating functions for in-plane and transverse displacements are employed. These functions satisfy the simply supported boundary and continuity conditions while incorporating nonlinear modal couplings and interactions. The continuous system is discretized using the Ritz method to obtain reliable reduced-order models (ROMs). The stability of the column under harmonic axial loading is then analyzed, with parametric instability regions identified based on the frequency and magnitude of the harmonic excitation. The effects of material properties, damping, and geometry on the parametric instability boundaries are also examined. Bifurcation diagrams are generated using both the brute-force method and continuation techniques to identify bifurcations in the parametric instability boundaries within the force-control space and to detect the presence of coexisting solutions. Also, basins of attraction for these coexisting solutions are determined to evaluate the dynamic integrity of the stable solution. The results indicate that the column may lose stability at load levels significantly lower than the static buckling load. Consequently, designers must exercise caution when working with structures exposed to time-varying axial loads to ensure safety and stability.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"613 ","pages":"Article 119170"},"PeriodicalIF":4.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932136","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":"Frequency modulation of coupled lateral-torsional vibration of unbalanced rotor","authors":"Chenglong Shi ,&nbsp;Yanhong Ma ,&nbsp;Yongfeng Wang ,&nbsp;Xueqi Chen ,&nbsp;Jie Hong","doi":"10.1016/j.jsv.2025.119157","DOIUrl":"10.1016/j.jsv.2025.119157","url":null,"abstract":"<div><div>In addition to introducing unbalance excitation to the rotor system, unbalance can also induce coupled lateral-torsional vibration under certain operating conditions, leading to frequency-modulated responses, combination resonance, and even instability, thereby posing a threat to system operational safety. To investigate the coupling mechanism of lateral and torsional vibration in unbalanced rotors and to develop a unified computational method for conducting modal analysis and response analysis, this paper first establishes the dynamic model of a rotor having an unbalanced disk at the midspan. Then the mechanism of frequency-modulated coupling of lateral and torsional vibrations is revealed from a kinematic perspective, and the closed-loop of this frequency modulation is highlighted. Subsequently, using the harmonic balance method, the modal characteristics of unbalanced rotor are analyzed, showing that a single mode of an unbalanced rotor comprises multiple asynchronous lateral and torsional components. The study further analyzes the impact of key parameters, such as rotational speed, eccentricity, and damping, on the coupled modes. The method for calculating the response of the unbalanced rotor under lateral or torsional external excitations based on the frequency is proposed, whose accuracy is validated through comparison with the numerical integration method. Finally, this paper presents a set of apparatus and methods for conducting coupled lateral-torsional vibration experiments on unbalanced rotor, which include instability testing and response experiments under lateral/torsional excitations, providing comprehensive validation of the theoretical findings.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"611 ","pages":"Article 119157"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908169","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":"Manipulation of hybrid love wave interaction with laminated metabarrier: Dynamic homogenization approach","authors":"Mriganka Shekhar Chaki ,&nbsp;Kuppalapalle Vajravelu ,&nbsp;David Guinovart","doi":"10.1016/j.jsv.2025.119134","DOIUrl":"10.1016/j.jsv.2025.119134","url":null,"abstract":"<div><div>Metabarriers, a periodic topological arrangement of resonators embedded into a host substrate, are the state-of-the-art structural designs that are capable of controlling a propagating wave under sub-wavelength regime. Due to their enormous application in seismic wave manipulation and broadband ultrasonic devices, a metabarrier structure is studied in the present work which consists of a periodic multilayered identical laminates embedded into an elastic half-space. Unlike metasurfaces, efficient metabarrier designs are hugely under-explored and still at infant level. Love wave, a horizontally polarized surface wave that can propagate in a layer-substrate configuration, is chosen as the studied wave. A non-classical dynamic asymptotic homogenization is adapted which provided a dispersive effective multilayer by substituting the laminated multilayered metabarrier. On solving the novel Love wave multilayered modeling problem, closed-form expression of dispersion equation, displacement fields and total time-averaged kinetic energy are derived. The control parameters, i.e. volume-fractions, heights of the laminates and unit cell size ratio, provides tunability due to which a cut-off frequency and a hybrid dispersion region are obtained within first Brillouin zone numerically for single-layered metabarrier, whereas, for a bilayered metabarrier, two cut-off frequencies and hybrid dispersion regions within respective first Brillouin zones are obtained having a band-gap at the middle. The analytical results are validated using finite element analysis of the corresponding discrete unit cell model at low-frequency. For a small-scale metabarrier configuration, band-gaps have been reported which are accurately predicted by the homogenized model and on using finite element simulation, Love wave propagation mode for pass-band frequency and wave attenuation for band-gap frequency are obtained. The present comprehensive analysis provides an insight into the hybridization of Love wave using tunable laminated metabarriers which can be utilized to achieve an efficient energy harvesting device.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"612 ","pages":"Article 119134"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894580","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":"Frequency adaptivity and low-frequency characteristics of tumbler-inspired dynamic vibration absorbers","authors":"Xiagui Pan ,&nbsp;Hongye Ma ,&nbsp;Qinchuan Li ,&nbsp;Bo Yan","doi":"10.1016/j.jsv.2025.119160","DOIUrl":"10.1016/j.jsv.2025.119160","url":null,"abstract":"<div><div>Dynamic vibration absorbers (DVAs) are effective in transferring vibration under the target frequency from host structures in engineering applications. However, they are strongly frequency sensitive and will lose their performance when the frequency is detuned. This study proposes a tumbler-inspired dynamic vibration absorber (T-DVA) to overcome the drawback and obtain the frequency adaptivity and low-frequency vibration absorption characteristics. The theoretical model of T-DVA is established with the Lagrange equation and the amplitude-response is determined. The effects of the eccentricity, moment of inertia, radius ratio of the tumbler, the mass ratio, and damping ratio on the vibration absorption performance are evaluated numerically and experimentally. T-DVA can effectively realize low-frequency vibration absorption around 5.5 Hz, and exhibits excellent frequency adaptation characteristics specifically when the frequency ratio varies from 0.25 to 1. Furthermore, the low-frequency vibration absorption performance can be improved through parameter optimization using genetic algorithms. This study provides an alternative solution for achieving frequency adaptivity of low-frequency vibration absorption.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"611 ","pages":"Article 119160"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911653","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 improved multimodal method for measuring the equivalent acoustical properties of porous materials","authors":"Lingfeng Chen ,&nbsp;Zhiliang Hong ,&nbsp;Xiaoyu Wang ,&nbsp;Lin Du","doi":"10.1016/j.jsv.2025.119132","DOIUrl":"10.1016/j.jsv.2025.119132","url":null,"abstract":"<div><div>This paper extends the original multimodal method to extract the complex wave number and characteristic impedance of porous materials beyond the cut-off frequency from an arbitrary mode rather than only a plane wave component. Four modifications are implemented to enhance both low- and high-frequency measurement accuracy, and wave number formulas are modified to include tube attenuation effects. Validation experiments for an air column and a polyurethane foam sample are conducted in an 8<span><math><mo>×</mo></math></span> 8 cm² rectangular impedance tube, with parallel measurements using the standard four-microphone approach in a 3-cm-diameter circular tube. The experimental results demonstrate that the improved multimodal method can accurately determine equivalent acoustical properties of porous materials up to nearly three times the cut-off frequency and at low frequencies, the accuracy is enhanced at the same time.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"611 ","pages":"Article 119132"},"PeriodicalIF":4.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891184","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 mechanics-informed neural network method for structural modal identification: application to closely spaced modes","authors":"Dawei Liu ,&nbsp;Yuequan Bao","doi":"10.1016/j.jsv.2025.119154","DOIUrl":"10.1016/j.jsv.2025.119154","url":null,"abstract":"<div><div>This paper investigates the mechanics-informed neural network (MINN) method for identifying closely spaced modes. The main contribution of this study lies in clearly illustrating the principle that the MINN method can discern closely spaced modes and validating the method's effectiveness in identifying closely spaced modes. Large structures typically have closely spaced modes, which pose significant challenges for traditional modal parameter identification methods. This study investigates the ability of MINN method for extracting closely spaced modes. The unique aspect of the MINN method lies in utilizing the characteristic that single source point ratios correspond to mode shapes. Besides, embedding of sparsity and independence in the neural network can increase effective redundancy, which is beneficial for accurate identification of model parameters. The time-domain vibration data and time-frequency (TF) domain single-source points (SSPs) are set as inputs to the network. The process then employs sparsity-constrained neural networks and cross-correlation minimization constrained neural networks to cluster SSPs, combined with modal response independence to solve for modal responses and mode shape results. Then, frequencies and damping ratios are calculated using the modal responses. A numerical simulation and an actual large-span spatial structure are employed to illustrate the efficacy of the MINN method. The method achieved a frequency resolution of 0.0148 Hz in the numerical simulation and successfully identified closely spaced modes with a frequency interval above 0.0761 Hz in the real-world structure. Traditional methods can only achieve identification of closely spaced modes with a frequency interval above 0.0508 Hz in the numerical simulation and closely spaced modes with a frequency interval above 0.1622 Hz in the real-world structure. The MINN method outperforms traditional methods by reducing frequency intervals for closely spaced modes from 0.0508 Hz to 0.0148 Hz (a 0.036 Hz improvement) in the numerical simulation and enhancing Modal Assurance Criterion (MAC) value precision by 3.61% in the real-world structure.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"612 ","pages":"Article 119154"},"PeriodicalIF":4.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935306","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":"The design and testing of an ultrasensitive device with embedded phononic crystals for the detection and localisation of nonlinear guided waves","authors":"Paweł Kudela ,&nbsp;Maciej Radzienski ,&nbsp;Marco Miniaci ,&nbsp;Piotr Fiborek ,&nbsp;Wieslaw Ostachowicz","doi":"10.1016/j.jsv.2025.119155","DOIUrl":"10.1016/j.jsv.2025.119155","url":null,"abstract":"<div><div>This work proposes a novel approach for designing and testing a sensing device with a high capability of filtering frequency bands.. The purpose of the device is the detection and localisation of nonlinear guided waves. Nonlinear guided waves are often associated with the presence of damage in structural components (considered here) but also can emanate from the cancerous tissue. Therefore the provided design framework applies to the broad class of problems. The proposed method is active and consists of a piezoelectric transducer attached to the inspected structure exciting a narrow frequency band wave packet and sensors placed at the proposed ultrasonic devices with embedded phononic crystals. Unit cells of phononic crystals are optimized to open a band gap at the excitation frequency so that the excited waves are attenuated, while the sensitivity to detection of higher harmonics is increased.</div><div>The proposed approach is tested numerically and validated experimentally by considering various manufacturing methods, materials, and unit cell geometries. A parametric study of the angle of attachment of the ultrasonic devices with the embedded phononic crystals to the inspected structure is performed. Band gaps and filtering capabilities of several prototypes are tested.</div><div>Numerical simulations of guided wave propagation that include the effect of delamination clapping proved that the proposed designs are sensitive enough to detect higher harmonics by simple signal thresholding. The most promising prototype is tested experimentally showing its capability of detection and localisation of a simulated damage.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"611 ","pages":"Article 119155"},"PeriodicalIF":4.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923980","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}