Journal of Sound and Vibration最新文献_第2页

Revisiting nonlinear impedance in acoustic liners

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-17 DOI: 10.1016/j.jsv.2025.119058

Rémi Roncen

{"title":"Revisiting nonlinear impedance in acoustic liners","authors":"Rémi Roncen","doi":"10.1016/j.jsv.2025.119058","DOIUrl":"10.1016/j.jsv.2025.119058","url":null,"abstract":"<div><div>Acoustic liners are essential for sound dissipation in aeroacoustic applications, but their impedance response often displays significant nonlinearity under varying sound pressure levels. This study investigates the impact of complex source excitations on the nonlinear impedance of aeroacoustic liners. Using both experiments and the Impulse Response Time-Domain Impedance Boundary Condition (IR-TDIBC) model, the paper explores how varying spectral content, including multitone excitations with different phase configurations, influences the impedance characteristics of liners. Experimental results are compared with theoretical predictions, revealing strong alignment and highlighting the significant role of excitation phase and amplitude in shaping the impedance response. It is the time-domain instantaneous particle velocity at the liner interface that proves to be the primary determinant of the nonlinear response, and the sole input required by the IR-TDIBC.</div><div>Additionally, the influence of the shear grazing flow noise on the impedance is examined by superimposing a single-tone excitation on background flow noise at different Mach numbers. Flow-induced noise is found to increase resistance and decrease reactance, as observed in duct experiments, accounting for some of the changes in impedance under shear grazing flow conditions. These findings underscore the importance of considering both complex source excitations and flow-induced noise when modeling the impedance of aeroacoustic liners, with implications for improving the accuracy of impedance predictions in practical aeroacoustic applications.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119058"},"PeriodicalIF":4.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644134","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

Research on longitudinal dynamic characteristics of wheel-rail belt conveyor under impact load

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-16 DOI: 10.1016/j.jsv.2025.119070

Hao Shi , Chunfa Shi , Chao Sun , Zhengli Li , Liying Song , Yuan Zhang , Mingyu Song , Guiwen Chu , Zhuang Wang

{"title":"Research on longitudinal dynamic characteristics of wheel-rail belt conveyor under impact load","authors":"Hao Shi , Chunfa Shi , Chao Sun , Zhengli Li , Liying Song , Yuan Zhang , Mingyu Song , Guiwen Chu , Zhuang Wang","doi":"10.1016/j.jsv.2025.119070","DOIUrl":"10.1016/j.jsv.2025.119070","url":null,"abstract":"<div><div>Belt conveyors are essential in coal mining production, but indentation resistance accounts for over 50% of energy consumption. To address this, our team developed a wheel-rail type conveyor that replaces traditional idlers with trolley walking structures. Through integrated theoretical analysis, numerical simulation, and experimental validation, the effects of belt speed, trolley distance, rail gap width, and rail height differential on longitudinal vibration characteristics were systematically investigated. Vibration acceleration increases by about 30% with belt speed rises from 1 m/s to 2 m/s. Increasing trolley distance from a baseline of 2 m raises vibration acceleration. Rail gap traversal induces 3.5-fold amplitude elevation compared to flat rail segments. Rail height differential emerges as the predominant factor, exhibiting positive correlation with vibration acceleration. The trends observed in the numerical simulation data align well with those from experimental tests. The research provides valuable insights for optimizing wheel-rail conveyors, addressing energy consumption issues, and improving operational efficiency.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119070"},"PeriodicalIF":4.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697383","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

Zero-stiffness in rolling-lobe air springs for passive, load adaptable and low-frequency vibration isolation

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-16 DOI: 10.1016/j.jsv.2025.119061

Moritz Sprengholz, Christian Hühne

{"title":"Zero-stiffness in rolling-lobe air springs for passive, load adaptable and low-frequency vibration isolation","authors":"Moritz Sprengholz, Christian Hühne","doi":"10.1016/j.jsv.2025.119061","DOIUrl":"10.1016/j.jsv.2025.119061","url":null,"abstract":"<div><div>Low-frequency vibration isolation is crucial for engineering structures and devices susceptible to low-frequency vibrations. Traditional linear isolators fail to provide effective low-frequency isolation without compromising static load capacity. At the same time, quasi-zero-stiffness designs struggle with load adaptability, maintaining zero-stiffness over a large displacement range, or require active components to achieve the former. Combining all of these features, this study investigates rolling-lobe air spring isolators as a passive vibration isolation alternative, aiming to achieve zero-stiffness across a wide displacement range under varying loads. To identify factors affecting vibration isolation performance in rolling-lobe isolators, this research examines various design parameters, including isolator geometry, internal pressure, external volume and membrane behavior. These parameters’ influence on the stiffness and damping characteristics is investigated through a rapid prototyping approach employing 3D-printing to fabricate and test 86 unique isolator configurations. The experimental data informs a predictive model based on a Duffing oscillator, which is then applied in single degree-of-freedom simulations to assess isolation efficiency across different loads and excitation levels. The simulation results demonstrate effective isolation from close to 2Hz onwards for the most promising configuration. Key findings are that higher internal pressures, controlled membrane deformation, and the addition of external volumes greatly enhance isolation performance. These insights provide valuable guidelines for designing rolling-lobe isolators capable of achieving zero-stiffness under varying loads and excitation levels, making them suitable for applications demanding robust passive vibration isolation over a broad range of operating conditions.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119061"},"PeriodicalIF":4.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reinforcement learning vibration control of moving three flexible coupled beams

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-15 DOI: 10.1016/j.jsv.2025.119069

Zhi-cheng Qiu, Jun-fei Hu, Xian-min Zhang

{"title":"Reinforcement learning vibration control of moving three flexible coupled beams","authors":"Zhi-cheng Qiu, Jun-fei Hu, Xian-min Zhang","doi":"10.1016/j.jsv.2025.119069","DOIUrl":"10.1016/j.jsv.2025.119069","url":null,"abstract":"<div><div>A multi-agent reinforcement learning (RL) vibration controller is designed to actively suppress the vibration of a three-flexible coupled moving beam system and optimize the translational motion trajectory to minimize the residual vibration after motion. The finite element method is used to model the dynamic equation of the system, and the parameters of the actual model are identified by wavelet transform and intelligent optimization algorithm. A structured light visual vibration detection system is constructed to measure the vibration of three flexible beams. Based on the modified model, a trajectory optimization method of the three-flexible beam coupling system based on neural network optimization algorithm is designed. The QMIX and phasic policy gradient (PPG) controller are trained to obtain excellent nonlinear controllers for vibration control of piezoelectric actuators. The simulation and experimental results show that the optimized trajectory greatly reduces the vibration excitation, and the vibration at the end of the translation and movement is quickly suppressed. For the dual flexible beam coupled system, the designed QMIX controller suppresses the vibration completely in about 7 s, while under large gain proportional and derivative (PD) control, there is still residual vibration in 20 s. For the vibration of the first bending mode of the single flexible beam system, the designed PPG controller completely suppresses the vibration in about 3 s, while the vibration attenuation takes about 10 s for the large gain PD control. For the vibration of the first two bending modes, the PPG controller completely suppresses the vibration in about 4 s, while it takes about 11 s for the large gain PD control. The control effects of the two RL methods are better than that of PD control, especially for suppressing small amplitude vibration.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119069"},"PeriodicalIF":4.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704053","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 characteristics analysis of rotating variable thickness thin plates with setting angles including accurate centrifugal force via NCFFR

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-14 DOI: 10.1016/j.jsv.2025.119067

Ji Wu , Dingguo Zhang , Liang Li , Xian Guo , Yuanzhao Chen

{"title":"Dynamic characteristics analysis of rotating variable thickness thin plates with setting angles including accurate centrifugal force via NCFFR","authors":"Ji Wu , Dingguo Zhang , Liang Li , Xian Guo , Yuanzhao Chen","doi":"10.1016/j.jsv.2025.119067","DOIUrl":"10.1016/j.jsv.2025.119067","url":null,"abstract":"<div><div>Two novel dynamic models using nodal coordinate based floating frame of reference formulation (NCFFR) are proposed to investigate dynamic characteristics of rotating variable thickness thin plates with setting angles. Based on Lagrange's equations of the second kind and NCFFR, the dynamic equations of the rotating plates are derived, directly incorporating accurate centrifugal force and Coriolis force terms. Thereby avoiding the omission of such terms that may occur in absolute nodal coordinate formulation (ANCF) based modal calculations. Compared to the conventional floating frame of reference (FFR) method, NCFFR leverages the advantages of ANCF by accounting for the effects of steady-state deformation on modal properties. The convergence and validation analyses are compared with existing literature. The vibration characteristics of the blade during smooth operation are revealed through fast Fourier transform (FFT). The results show that the first-order mode of the rotating thin plate is excited under steady-state uniform rotation, leading to deformation dominated by this mode. And the increased rotational angular velocity shifts the system's frequency response resonance region (the ratio excitation frequency to first-order natural frequency) to higher. The torsional deformation of the rotating plate is triggered by the setting angles. Variable thickness plates enhance out-of-plane bending stiffness and reduce in-plane torsional stiffness, resulting in higher natural frequencies for out-of-plane modes compared to uniform plates.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"607 ","pages":"Article 119067"},"PeriodicalIF":4.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679618","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

Experimental characterization of fully-anisotropic equivalent fluids from normal incidence measurements 通过法线入射测量确定全各向异性等效流体的实验特征

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-13 DOI: 10.1016/j.jsv.2025.119051

Théo Cavalieri , Mélanie Nolan , Mathieu Gaborit , Jean-Philippe Groby

{"title":"Experimental characterization of fully-anisotropic equivalent fluids from normal incidence measurements","authors":"Théo Cavalieri , Mélanie Nolan , Mathieu Gaborit , Jean-Philippe Groby","doi":"10.1016/j.jsv.2025.119051","DOIUrl":"10.1016/j.jsv.2025.119051","url":null,"abstract":"<div><div>Experimental validation remains crucial in the fields of acoustics materials and meta-materials. This study is based on a recent method, built upon the theoretical framework introduced by Terroir et al. in 2019, for characterizing three-dimensional anisotropic equivalent fluids, to which the experimental validation is paramount. This work focuses on the characterization of anisotropic fluids using a limited set of acoustic measurements in an impedance tube. In addition, the method demonstrates its ability to recover the Johnson–Champoux–Allard–Lafarge (JCAL) parameters as well as rotation angles and principal directions of an unknown equivalent fluid. These parameters are meaningful in understanding the acoustics of anisotropic porous materials. The recovery of these parameters is performed by a minimization procedure, which first recovers the thermo-acoustic properties of the medium, and secondly its visco-inertial properties. This technique showcases promise in effectively characterizing complex porous materials, underlining its potential for practical application.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119051"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697348","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

On the zero frequency bandgap of seismic metamaterials

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-13 DOI: 10.1016/j.jsv.2025.119064

Jingyu Luo , Kaiming Bi , Xingbo Pu

引用次数: 0

Advancements in full-field pressure reconstruction of water-wave impact

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-13 DOI: 10.1016/j.jsv.2025.119048

R. Kaufmann, V. Aune

{"title":"Advancements in full-field pressure reconstruction of water-wave impact","authors":"R. Kaufmann, V. Aune","doi":"10.1016/j.jsv.2025.119048","DOIUrl":"10.1016/j.jsv.2025.119048","url":null,"abstract":"<div><div>A new method for non-intrusive surface load measurement during water wave impact is introduced. The wave impact on a thin steel plate was measured using a deflectometry setup for full-field optical deformation measurements. Surface pressure distributions were reconstructed by applying the global equilibrium equation using the virtual fields method (VFM), enabling full-field and time-resolved information. This approach represents a promising advancement over the conventional point-wise or sub-area measurements that are typically conducted with transducers and load cells. The practical application of this method was demonstrated during an experimental campaign at the SINTEF towing tank facility. The test campaign successfully captured full-field, time resolved deformation data from wave impacts on the investigated flat steel plate specimen. Pressure and forces were reconstructed using the VFM and compared to force panel measurements. The current study shows that this load reconstruction method can provide accurate, time-resolved loading information with a high density of data points. Additionally, the method’s high spatial resolution and sensitivity helped to identify various spatial characteristics of the water wave impact.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119048"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Video-based lateral vibration characteristics extraction in operational rotor systems

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-13 DOI: 10.1016/j.jsv.2025.119047

Wenjing Kang , Wenbin Zheng , Bingqing Liu , Shiyuan Pei

{"title":"Video-based lateral vibration characteristics extraction in operational rotor systems","authors":"Wenjing Kang , Wenbin Zheng , Bingqing Liu , Shiyuan Pei","doi":"10.1016/j.jsv.2025.119047","DOIUrl":"10.1016/j.jsv.2025.119047","url":null,"abstract":"<div><div>Video sequences endowed with high-density spatial resolution provide a new approach to vibration measurement, replacing conventional sensing devices. Based on the vibration measurement requirements of the operational rotor system, this study proposed a method to extract rotor systems’ full-field lateral vibration signals based on phase-based video processing technology. The method was validated on a test rig, covering steady-state and dynamic-state conditions, and compared with eddy current sensors for accuracy verification. It also enabled the measurement of rotor vibration shapes. Additionally, building upon phase-based motion amplification technique, we introduce adaptive input parameters for rotor vibration amplification to streamline the visualization process and reduce subjective assessments of vibration amplitudes via color mapping. The findings of this study demonstrate that the video-based rotor system measurement method achieves accuracy close to the eddy current displacement sensors while offering significant advantages in measurement range, application complexity, and visualization.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119047"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681147","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

Vibration enhancement for fiber-optic acoustic sensors via Helmholtz resonator-membrane synergy

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-03-12 DOI: 10.1016/j.jsv.2025.119063

Xingyu Wei , Haitian Lyu , Junfeng Zhou , Zhaoliang Peng , Hongcheng Qiu , Wenhao Qi , Shoulu Gong , Lei Shao , Wenming Zhang

{"title":"Vibration enhancement for fiber-optic acoustic sensors via Helmholtz resonator-membrane synergy","authors":"Xingyu Wei , Haitian Lyu , Junfeng Zhou , Zhaoliang Peng , Hongcheng Qiu , Wenhao Qi , Shoulu Gong , Lei Shao , Wenming Zhang","doi":"10.1016/j.jsv.2025.119063","DOIUrl":"10.1016/j.jsv.2025.119063","url":null,"abstract":"<div><div>The vibration-responsive membrane enables effective and sensitive sound wave capture, and enhancing membrane vibration is essential for optimizing sensor performance. Typically housed within an acoustic chamber to protect against external disturbances, the membrane's interaction with a carefully engineered chamber provides a promising pathway to improve sound-induced vibration. Here, we propose a design paradigm that effectively enhances membrane vibration by exploiting the synergy between the Helmholtz resonator and membrane dynamics. The complex modal analysis incorporating acoustic impedance and mass corrections is developed to characterize the synergistic vibration behavior of the Helmholtz resonator-coupled membrane, validated through finite element analysis and experimental testing. We apply the Helmholtz resonator-membrane synergy into a fiber-optic acoustic sensor prototype with a 50 μm-thick flexible polymer membrane, achieving a maximum sensitivity of 654 nm/Pa (-104.05 dB re rad/μPa), together with a minimum detectable sound pressure down to 7.7 μPa/<span><math><msqrt><mtext>Hz</mtext></msqrt></math></span>. This synergy-enabled vibration enhancement provides a straightforward and efficient method for optimizing sensitivity and extending bandwidth, demonstrating strong potential for advanced acoustic detection applications.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"608 ","pages":"Article 119063"},"PeriodicalIF":4.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681244","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