Journal of Sound and Vibration最新文献_第7页

A quantitative study of energy localization characteristics in defect-embedded monoatomic phononic crystals 缺陷嵌入单原子声子晶体能量局域化特性的定量研究

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-12 DOI: 10.1016/j.jsv.2025.119164

Vinod Ramakrishnan, Kathryn H. Matlack

{"title":"A quantitative study of energy localization characteristics in defect-embedded monoatomic phononic crystals","authors":"Vinod Ramakrishnan, Kathryn H. Matlack","doi":"10.1016/j.jsv.2025.119164","DOIUrl":"10.1016/j.jsv.2025.119164","url":null,"abstract":"<div><div>Phononic crystals (PnCs) are periodic engineered media that can customize the spatio-temporal characteristics of mechanical energy propagation. PnCs that additionally leverage precisely embedded defects can achieve robust energy localization with desirable spatio-temporal characteristics, opening avenues for critical engineering applications, e.g., energy harvesting, waveguiding, and fluid flow control. Numerous studies have qualitatively explored the localized dynamics via simulations and experiments, investigating the defect resonance frequency as the primary feature. However, the frequency represents only a subset of the relevant characteristics and a systematic approach to quantify the full scope of the defect dynamics remains elusive. This article establishes the frequency, mode shape, and localized velocity (or displacement) amplitude envelope as three significant factors governing the defect resonance dynamics, and quantitatively examines these characteristics using a modified version of the perturbed tridiagonal n-Toeplitz method. The proposed method accurately estimates the resonance characteristics in 1D and 2D defect-embedded monoatomic PnC lattices with single and multiple defects and elucidates the effects of damping. The method is used to highlight how the key characteristics of defect modes depend on system parameters. Finally, we demonstrate the benefits of defect modes through two defect-based monoatomic PnCs that can accommodate – (i) a virtual ground, and (ii) achieve customized acoustic interaction and absorption, and use the proposed method to analyze these scenarios. The proposed strategy can be readily extended to more elaborate PnCs and augments the design space for defect-based PnCs.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"614 ","pages":"Article 119164"},"PeriodicalIF":4.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941601","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

Disturbance attenuation over a frequency band: A multi- harmonics geometric design approach 一个频带上的干扰衰减：一种多谐波几何设计方法

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-11 DOI: 10.1016/j.jsv.2025.119204

Jiqiang Wang , Huajiang Ouyang

引用次数: 0

Design of a slow sound based meta-poro-elastic material with enhanced absorption capabilities 具有增强吸收能力的慢声超多孔弹性材料的设计

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-09 DOI: 10.1016/j.jsv.2025.119137

Walter Bova , Eugene Nijman , Markus Polanz , Domenico Mundo

{"title":"Design of a slow sound based meta-poro-elastic material with enhanced absorption capabilities","authors":"Walter Bova , Eugene Nijman , Markus Polanz , Domenico Mundo","doi":"10.1016/j.jsv.2025.119137","DOIUrl":"10.1016/j.jsv.2025.119137","url":null,"abstract":"<div><div>Poroelastic foams are generally efficient to absorb sound. Thanks to their typical extensive air-solid interface, these materials are able to dissipate energy through viscous and thermal interactions. However, because of their absorption mechanisms, they have a low absorption efficiency at wavelengths much larger than the layer thickness. Works on the optimization of the pore design have shown that little improvement can be obtained at low frequencies. Meso-scale inclusions embedded in foam-like materials have been employed to address this problem and broaden the working frequency ranges, mainly through resonance phenomena. Although the subwavelength resonators effectively absorb sound in the low frequency range, the sizes needed to achieve low frequency performance frequently prohibit practical use. In this work we demonstrate how compact sound absorbing panels can be designed by exploiting the slow sound propagation achieved in flexible rubber tubes. An axisymmetric FEM formulation is developed and an optimization of the Biot parameters is carried out. The designed meta-poro-elastic material, obtained by embedding rubber quarter wave resonators in a poroelastic foam, is able to absorb well the low frequency noise while keeping good absorption capabilities at high frequency.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"613 ","pages":"Article 119137"},"PeriodicalIF":4.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069959","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

Synchronous patterns in two pendula suspended on multi degrees of freedom support 同步模式在两个钟摆上悬挂在多自由度的支撑上

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-09 DOI: 10.1016/j.jsv.2025.119159

Dawid Dudkowski, Barbara Błażejczyk–Okolewska, Tomasz Kapitaniak

{"title":"Synchronous patterns in two pendula suspended on multi degrees of freedom support","authors":"Dawid Dudkowski, Barbara Błażejczyk–Okolewska, Tomasz Kapitaniak","doi":"10.1016/j.jsv.2025.119159","DOIUrl":"10.1016/j.jsv.2025.119159","url":null,"abstract":"<div><div>We investigate the dynamics and possible synchronization scenarios of two pendula suspended on 3 DOF (three degrees of freedom) beam. The base has been equipped with supporting springs, allowing it to perform both translational and rotary oscillations (full plane motion). Depending on the parameters of the model, we have determined different regions of classical synchronous patterns, as well as uncovered more complex scenarios, including irregular motion and quasiperiodic synchronization. As we have observed, in particular cases the beam can begin to imitate an additional pendulum, performing oscillations with the amplitude comparable to the nodes. The co-existence of possible states has been studied and visualized using basins of attraction, and the properties of synchronous solutions have been discussed. Using the energy balance method, we have followed the energy flows within the system when the dynamics changes. The results presented in this paper have been collected using classical bifurcation tools and modern sample-based methods, showing that both approaches are complementary and can be applied in the analysis of complex nonlinear problems. Enhancing the freedom of motion of the supporting base, we can investigate more practical scenarios of coupled pendula and pendula-like systems, developing the synchronization theory and its use in solving modern engineering problems.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"613 ","pages":"Article 119159"},"PeriodicalIF":4.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936868","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

Control of dynamic interaction between the beam bending and liquid sloshing 光束弯曲与液体晃动动态相互作用的控制

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-08 DOI: 10.1016/j.jsv.2025.119172

Jiawei Han, Jie Huang

引用次数: 0

Cross-axis bending-torsion coupled dynamic model for thermal-induced frequency drift of 2D MEMS micromirrors 二维MEMS微镜热激频率漂移的跨轴弯曲-扭转耦合动力学模型

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-08 DOI: 10.1016/j.jsv.2025.119190

Ze-Yu Zhou, Kai-Ming Hu, Er-Qi Tu, Guang Meng, Wen-Ming Zhang

{"title":"Cross-axis bending-torsion coupled dynamic model for thermal-induced frequency drift of 2D MEMS micromirrors","authors":"Ze-Yu Zhou, Kai-Ming Hu, Er-Qi Tu, Guang Meng, Wen-Ming Zhang","doi":"10.1016/j.jsv.2025.119190","DOIUrl":"10.1016/j.jsv.2025.119190","url":null,"abstract":"<div><div>Thermal-induced frequency drift poses significant threats to the performance and long-term reliability of microelectromechanical systems (MEMS) micromirrors. Unlike uniaxial micromirrors, cross-axis two-dimensional (2D) micromirrors exhibit the substantially different bending-torsion coupled dynamic behaviors due to mutually perpendicular beams. Therefore, it is interesting yet challenging to reveal the coupling effect on the cross-axis bending-torsion coupled dynamic behaviors of 2D micromirrors. Here, a temperature-dependent cross-axis bending-torsion coupled dynamic model is developed to elucidate the thermal-induced frequency drift of 2D micromirrors. The proposed model explains the intricate multimodal coupling relationships of cross-axis 2D micromirrors, indicating that the thermal-induced frequency drift of fast-scanning mode is influenced not only by the torsional stiffness of fast-axis beam, but also by the bending stiffness of slow-axis beam. Consequently, by introducing the temperature-dependent cross-axis bending-torsion coupled stiffness matrix, the prediction error of thermal-induced frequency drift is reduced by 88.7 %. Furthermore, a package optimization method for low thermal-induced frequency drift is presented based on the proposed model. As a result, the temperature coefficient of frequency (TCF) is decreased by 62.4 % at the temperature difference of 120 K, which significantly improves the frequency stability of cross-axis 2D micromirrors. This work helps to better comprehend the cross-axis bending-torsion coupled dynamic behaviors of MEMS devices, as well as provides general design guidelines for the low thermal-induced frequency drift and crosstalk-free 2D MEMS micromirrors.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"613 ","pages":"Article 119190"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069960","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

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