Journal of Sound and Vibration最新文献_第8页

The local anti-resonance of guided elastic waves: An analytical perspective and application for wave mode tuning 弹性导波的局部反共振：波模调谐的解析视角及应用

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-07 DOI: 10.1016/j.jsv.2025.119192

Wenxin Lai , Paixin Chen , Kai Wang , Shuang Xu , Ruiqi Guan , Honglin Yan , Zhongqing Su

{"title":"The local anti-resonance of guided elastic waves: An analytical perspective and application for wave mode tuning","authors":"Wenxin Lai , Paixin Chen , Kai Wang , Shuang Xu , Ruiqi Guan , Honglin Yan , Zhongqing Su","doi":"10.1016/j.jsv.2025.119192","DOIUrl":"10.1016/j.jsv.2025.119192","url":null,"abstract":"<div><div>Despite the proven high sensitivity of nonlinear features in guided elastic waves to material degradation and undersized defects, the accurate measurement of defect-induced nonlinear wave features remains challenging primarily due to the pronounced nonlinear waves from disturbing sources. In this investigation, an analytical investigation of the previously un-explored local anti-resonance (LAR) phenomenon induced by guided elastic waves is performed, and the capability of LAR for tuning guided wave mode is identified which enables the suppression of undesired nonlinear waves from the disturbing sources. In the analytical investigation, the normal mode expansion method is adopted to analyze the guided wave reflection at the boundaries of a flat bottom hole, on which basis the generation of local anti-resonance is interpreted from the perspective of destructive interference of trapped waves in the hole. The capability of LAR for guided wave mode tuning is demonstrated, and thus an approach leveraging this capability is developed to suppress the undesired higher harmonics in guided waves, allowing for the precise acquisition of nonlinear waves associated with material defect. Numerical simulations and experimental investigations are performed for the proof-of-concept. This investigation presents a significantly simpler and more implementable design for achieving mode tuning compared to existing solutions. Addressing the critical obstacle for accurate measurement of nonlinear features in guided waves, the proposed method can remarkably enhance the application of structural health monitoring and nondestructive evaluation methods based on nonlinear features in guided waves.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"615 ","pages":"Article 119192"},"PeriodicalIF":4.3,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089708","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}

引用次数: 0

Reducing airfoil trailing-edge noise through chordwise-varying porous airfoil design 通过弦向变化多孔翼型设计降低翼型尾缘噪声

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-07 DOI: 10.1016/j.jsv.2025.119149

Yuqi Xiao , Xiang Song , Jiakai He , Qiuhong Liu , Jie Zhou

引用次数: 0

General theory for separate scanning of vertical and torsional modal properties of thin-walled girders by a moving four-wheel test vehicle 移动四轮试验车分离扫描薄壁梁竖向和扭转模态特性的一般理论

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-07 DOI: 10.1016/j.jsv.2025.119189

Y.B. Yang , L.K. Shi , Hao Xu , J. Chen , Y.H. Liu

{"title":"General theory for separate scanning of vertical and torsional modal properties of thin-walled girders by a moving four-wheel test vehicle","authors":"Y.B. Yang , L.K. Shi , Hao Xu , J. Chen , Y.H. Liu","doi":"10.1016/j.jsv.2025.119189","DOIUrl":"10.1016/j.jsv.2025.119189","url":null,"abstract":"<div><div>The novelty of this paper is to make full use of the four wheels’ signals of a scanning vehicle in detecting the frequencies, damping ratios, and mode shapes of the bridge. To offer a theoretical basis, closed-form solutions are derived for the responses of a damped mono-symmetric beam. Then, the wheel-bridge contact responses are calculated from those of the vehicle to eliminate the vehicle frequencies’ masking effect. Further, for rigid cross sections, the vertical and torsional-flexural responses of the bridge are separated from those of the left and right wheels. The Gabor transform is employed to convert the responses from time to time-frequency domain. Of interest is the dual role played by the front and rear wheels via their spatial correlation. First, for the wheels acting at the <em>same location</em>, but <em>different instants</em> (due to their time lag), the bridge damping ratio is determined as a measure of the decay in response. Second, for the wheels acting at the <em>same instant</em>, but <em>different locations</em> (spanned by vehicle length), the amplitude ratio of two adjacent modal points is used in recovering the mode shapes that are free of damping distortion. The present method is validated by the finite element simulation with the conclusions: (1) the vertical and torsional frequencies, damping ratios, and mode shapes of the bridge can be successfully identified; (2) the theory is robust with regard to bridge damping, vehicle suspension damping, vehicle speed, vehicle’s eccentricity; and (3) the results identified of the modal parameters are acceptable, even in face of pavement roughness and environment noise if the bridge vibration can be properly elevated.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"614 ","pages":"Article 119189"},"PeriodicalIF":4.3,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106964","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}

引用次数: 0

An efficient semi-analytical method for dynamic responses of a tunnel in stratified soils with irregular interfaces 不规则界面层状土中隧道动力响应的有效半解析方法

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-07 DOI: 10.1016/j.jsv.2025.119191

Chao He , Yuanping Jia , Shunhua Zhou , Xingwei Chen

{"title":"An efficient semi-analytical method for dynamic responses of a tunnel in stratified soils with irregular interfaces","authors":"Chao He , Yuanping Jia , Shunhua Zhou , Xingwei Chen","doi":"10.1016/j.jsv.2025.119191","DOIUrl":"10.1016/j.jsv.2025.119191","url":null,"abstract":"<div><div>Dynamic tunnel-soil interaction is an important problem of long-standing interest in transportation and environmental engineering. Existing researches most focused on the dynamic problems in a homogeneous half-space with regular geometry. In this study, we develop an efficient semi-analytical method to calculate the dynamic responses caused by a time-harmonic line load acting on a circular tunnel embedded in stratified soils with irregular interfaces. This method uses the generalized reflection/transmission matrices (GRTM) to address wave propagation in a multi-layered half-plane with irregular interfaces. The multiple scattering theory and wave transformation are also applied to harmonize the functions describing various types of waves scattered by the irregular interfaces and the tunnel-soil interface. The present method has two attractive advantages: (1) It can handle arbitrarily shaped interfaces; (2) Only the irregular parts of the interfaces need to be discretized. The present method is verified by comparing to two existing results in the technical literature for simpler cases. A parametric study on a tunnel in a two-layered half-plane with a ladder-shaped interface is conducted to investigate the influence of irregular geometry on the dynamic responses. Additionally, a real case study of Nanjing metro line S6 is also conducted to show the applicability of the present method. Our results show that interface irregularities have a significant influence on the dynamic responses. The assumption of horizontal soil layer interface widely adopted in the previous studies and design analyses may cause considerable errors in predicting the dynamic responses.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"614 ","pages":"Article 119191"},"PeriodicalIF":4.3,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941405","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}

引用次数: 0

Three-dimensional dynamic modeling and vibration analysis of roller bearings under compound fault excitation

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-07 DOI: 10.1016/j.jsv.2025.119188

Juanjuan Shi , Jimin Hu , Yang Luo , Yihao Yu , Natalie Baddour , Weiguo Huang , Changqing Shen , Zhongkui Zhu

{"title":"Three-dimensional dynamic modeling and vibration analysis of roller bearings under compound fault excitation","authors":"Juanjuan Shi , Jimin Hu , Yang Luo , Yihao Yu , Natalie Baddour , Weiguo Huang , Changqing Shen , Zhongkui Zhu","doi":"10.1016/j.jsv.2025.119188","DOIUrl":"10.1016/j.jsv.2025.119188","url":null,"abstract":"<div><div>Dynamic modeling is widely used in bearing fault diagnosis. Bearings with compound fault produce more complex vibration characteristics, making fault characteristic extraction more difficult. Current studies on dynamic characteristics with bearing compound fault are insufficient, and characteristic analysis for bearing physical variables is not fully investigated. Therefore, a novel three-dimensional dynamic model with bearing compound faults is established. Quaternionic attitude algorithm is introduced to characterize the rotational attitude of bearing inner raceway and the balls in three dimensions. Meanwhile, in order to accurately portray the bearing physical variables, the proposed model considers multiple rigid body degrees of freedom, dynamic circular motion, mixed elastic lubrication of the bearings, and dynamic changes in the position and speed of the contact points between the balls and the raceway. The proposed model is validated by experiments. The effect of compound fault on the bearing physical variables (quantities) characteristics is investigated. The changing trend of bearing physical variables under different fault length and drive motor rotational speeds is explored. The conclusions of this work would be helpful to explain and analyze the dynamic characteristics of roller bearings with compound faults.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"613 ","pages":"Article 119188"},"PeriodicalIF":4.3,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942918","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}

引用次数: 0

Coefficient of restitution for an elastic rod in a viscous medium

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-07 DOI: 10.1016/j.jsv.2025.119151

Feifei Wang, Scott W. Hansen

引用次数: 0

Extracting sub-pixel displacement measurements using visual vibrometry methods for non-destructive evaluation 提取亚像素位移测量使用视觉振动法的方法进行无损评价

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-05 DOI: 10.1016/j.jsv.2025.119136

Lucy Dougill, Anthony J. Croxford, Paul D. Wilcox

{"title":"Extracting sub-pixel displacement measurements using visual vibrometry methods for non-destructive evaluation","authors":"Lucy Dougill, Anthony J. Croxford, Paul D. Wilcox","doi":"10.1016/j.jsv.2025.119136","DOIUrl":"10.1016/j.jsv.2025.119136","url":null,"abstract":"<div><div>Vibration-based methods are crucial for Non-Destructive Evaluation (NDE), with non-contact techniques valued for their adaptability to various materials and structures. This paper presents a cost-effective approach to vibrational analysis using off-the-shelf cameras to capture videos of forcibly excited structures. The method combines forced excitation with phase-based optical flow to extract sub-pixel displacements, eliminating the need for motion magnification. Forced excitation facilitates temporal Fourier analysis, optimising sub-pixel displacement extraction, enhancing sensitivity, and improving efficiency. In contrast to traditional methods that require high-frame rate cameras and extensive computational resources, this system operates effectively with a low-frame rate camera, making it well-suited for NDE applications in industrial settings. Visual vibrometry works on the principle that damage alters a structure’s vibrational response, using changes in pixel values as motion sensors for sub-pixel measurements. Forced excitation amplifies sensitivity by actively probing structures, aiding in early-stage damage detection. A case study of a cantilever structure demonstrated the system’s ability to resolve displacements as small as <span><math><mrow><mn>0</mn><mo>.</mo><mn>65</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> (1/200th of a pixel). Comparative analysis of defective and pristine cantilever samples revealed subtle differences in mode shapes, with the optimisation curve-fit method successfully identifying defects and showing promise for defect localisation.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"614 ","pages":"Article 119136"},"PeriodicalIF":4.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928908","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}

引用次数: 0

Dynamic analysis of single-sided vibro-impact nonlinear energy sinks via forced response curves and application to vibration mitigation 单面振动冲击非线性能量阱的强迫响应曲线动力学分析及减振应用

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-05 DOI: 10.1016/j.jsv.2025.119150

Zelong Lin , Haiqin Li , Ang Li , Zhiyong Zhang , Xianren Kong , Qian Ding

{"title":"Dynamic analysis of single-sided vibro-impact nonlinear energy sinks via forced response curves and application to vibration mitigation","authors":"Zelong Lin , Haiqin Li , Ang Li , Zhiyong Zhang , Xianren Kong , Qian Ding","doi":"10.1016/j.jsv.2025.119150","DOIUrl":"10.1016/j.jsv.2025.119150","url":null,"abstract":"<div><div>The frequency response mechanisms of the single-sided vibro-impact nonlinear energy sink (SSVI-NES) are comprehensively investigated focusing on the application of passive vibration control. Nonlinear energy sink (NES) refers to a broadband vibration damping technique that was developed based on the targeted energy transfer (TET) of nonlinear systems. The SSVI-NES, which achieves the TET by means of asymmetric single-sided vibro-impacts, can offer improved TET with a faster time scale and enhanced robustness with respect to forcing conditions when compared to other types of NESs that are constructed with smooth nonlinearities. However, the resonance mechanisms and frequency response characteristics of such SSVI-NES, despite special significance in vibration damping analysis, remain an open question due to the difficulties associated with non-smooth terms. In this paper, for the first time, by proposing an alternative frequency–time harmonic balance technique into the Hunt and Crossley vibro-impact model, the forced response curves (FRCs) of such SSVI-NES is calculated, allowing one to uncover the dynamical mechanism of the SSVI-NES and its vibration-damping performance with physical in-depth. Thanks to the FRCs, the resonance mechanisms as well as the bifurcation conditions of the SSVI-NES are then comprehensively investigated with a specific focus paid to the parametric evaluation effects of the forcing amplitude, the stiffness, and the impact loss, revealing the rich response regimes of the SSVI-NES.As a result, a set of easy-to-use design criteria for SSVI-NES is finally obtained to realize vibration suppression over a wider range of forcing amplitudes and frequencies for subsequent generalization to complex structures.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"612 ","pages":"Article 119150"},"PeriodicalIF":4.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911967","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}

引用次数: 0

Gas turbine harmonic detection and modal identification based on underdetermined blind source separation 基于欠定盲源分离的燃气轮机谐波检测与模态识别

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-05 DOI: 10.1016/j.jsv.2025.119161

Chao Song , Jianxiong Hu , Wei Cheng , Bicheng Bo , Mingsui Yang , Xuefeng Chen , Liqi Yan , Baijie Qiao , Lin Gao , Hai Huang , Jialu Yin

{"title":"Gas turbine harmonic detection and modal identification based on underdetermined blind source separation","authors":"Chao Song , Jianxiong Hu , Wei Cheng , Bicheng Bo , Mingsui Yang , Xuefeng Chen , Liqi Yan , Baijie Qiao , Lin Gao , Hai Huang , Jialu Yin","doi":"10.1016/j.jsv.2025.119161","DOIUrl":"10.1016/j.jsv.2025.119161","url":null,"abstract":"<div><div>In gas turbine operational modal parameter identification, traditional methods like operational modal analysis or underdetermined blind source separation (UBSS) struggle with underdetermined time-delay mixture and harmonic interference. Based on the signal sparsity in the energy domain, this paper proposes a novel method based on improved UBSS with binary time-frequency masking (BTFM). First, signals are transformed to the time-frequency domain, and then to the energy domain by integrating over time. And peak frequency points are detected frequency energy sum curve from each channel. Second, to distinguish source signals, cosine distances between peak frequency points and other ones are calculated, and BTFM is constructed. Third, source signals are recovered and padding lines are added to reduce boundary effects. Finally, to detect harmonic components in the source signals, the probability density and kurtosis of each signal are calculated. Based on the separated modal response signals, the modal frequency of each order is identified, and the modal modes are determined using the mixing matrix. The effectiveness of the proposed method is validated through comprehensive analysis on a simulation system, a three-rotor test bench, and gas turbine datasets. Results show that it outperforms existing methods in achieving more accurate and reliable modal identification under harmonic interference. The proposed method facilitates operational modal identification and condition monitoring for large-scale equipment such as gas turbines, thereby providing guidance for structural optimization and vibration/noise reduction.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"613 ","pages":"Article 119161"},"PeriodicalIF":4.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089904","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}

引用次数: 0

A sub-structuring approach to overcome model limitations for input-state estimation of offshore wind turbines 一种克服海上风力机输入状态估计模型限制的子结构方法

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-05 DOI: 10.1016/j.jsv.2025.119153

Harry A. Simpson , Eleni N. Chatzi , Manolis N. Chatzis

{"title":"A sub-structuring approach to overcome model limitations for input-state estimation of offshore wind turbines","authors":"Harry A. Simpson , Eleni N. Chatzi , Manolis N. Chatzis","doi":"10.1016/j.jsv.2025.119153","DOIUrl":"10.1016/j.jsv.2025.119153","url":null,"abstract":"<div><div>The Augmented Kalman Filter (AKF) has been applied previously for input-state estimation of offshore wind turbines (OWT). However, the accuracy of the estimated results depend on the chosen model, for which various complexities exist, making this a challenging task. Two of which are the lack of information required to model the Rotor-Nacelle Assembly (RNA), and the high uncertainty associated with the soil–structure-interaction (SSI). Therefore, the primary focus of this work is to avoid these limitations by considering a suitable substructure which eliminates the need to model the RNA and the SSI, thus significantly reducing uncertainties. The substructure is obtained by ‘cutting’ the OWT at the top of the tower and at the ground level. To define the model, the resulting substructure then only requires geometries and material properties for the monopile and tower; information which is often known with greater certainty. A numerical case study is presented to investigate the accuracy of the proposed approach for input-state estimation of a 15 MW OWT. A series of commonly used setups involving accelerometers and inclinometers are used and the effects on the predicted fatigue life of the structure are discussed. Additionally, a simple approximation of the wave loading is considered to estimate and account for its contribution to the dynamics of the substructure. The proposed approach is shown to be an effective solution for input-state estimation of OWTs when the RNA or SSI are unknown or associated with significant uncertainty.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"612 ","pages":"Article 119153"},"PeriodicalIF":4.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923215","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}

引用次数: 0