Journal of Sound and Vibration最新文献

英文中文

Multirotor noise control using synchrophasing under nonstationary conditions 非平稳条件下多转子同步噪声控制

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-23 DOI: 10.1016/j.jsv.2026.119673

Vítor T. Valente, Eric Greenwood, Eric N. Johnson

The growing presence of unmanned aerial vehicles (UAVs) in urban areas has raised increasing concern about their noise emissions. Although UAVs hold promise for improving urban mobility, the noise generated by their propellers can be disruptive and remains a significant barrier to public acceptance. Previous studies showed that radiated noise in one or more directions of these vehicles can be reduced by synchronizing the phase relationships between multiple rotors on the aircraft. This paper expands the experimental analysis of this concept by focusing on nonstationary acoustic conditions while analyzing attenuation and amplification cases. These conditions include changing the target region location, changing the angular velocity set point, changing the target region location and velocity set point at the same time, and also generating torques. A small hexacopter mounted in an anechoic chamber is used for the experimental evaluation. Results suggest a difference of 12 dB can be achieved when comparing attenuation and amplification cases for the varying target location. Predictions show larger differences when analyzing only tonal components. When generating torques, experimental measurements suggest that even in a worst-case scenario, where motors are grouped into four distinct categories based on similar angular velocity set points, a noise reduction of approximately 3 dB to 4 dB can be achieved.

越来越多的无人驾驶飞行器（uav）出现在城市地区，引起了人们对其噪音排放的越来越多的关注。尽管无人机有望改善城市交通，但其螺旋桨产生的噪音可能具有破坏性，并且仍然是公众接受的重大障碍。先前的研究表明，这些飞行器的一个或多个方向的辐射噪声可以通过同步飞机上多个旋翼之间的相位关系来降低。本文在分析衰减和放大情况的同时，重点分析了非平稳声学条件，扩展了这一概念的实验分析。这些条件包括改变目标区域位置，改变角速度设定点，同时改变目标区域位置和速度设定点，并产生转矩。在消声室中使用小型六旋翼机进行实验评估。结果表明，在不同目标位置的衰减和放大情况下，可以实现12 dB的差异。当只分析音调成分时，预测显示出更大的差异。当产生扭矩时，实验测量表明，即使在最坏的情况下，电机根据相似的角速度设定值分为四个不同的类别，也可以实现大约3 dB到4 dB的降噪。

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引用次数: 0

Corrigendum to “Nonlinear vibration analysis of compressible constrained layer damping using a frequency- and load-dependent virtual material” [J. Sound Vib. 626 (2026) 119626] “基于频率和载荷相关虚拟材料的可压缩约束层阻尼非线性振动分析”[J]。[au:][音626 (2026)]

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-22 DOI: 10.1016/j.jsv.2026.119662

Yongbu Jin, Dong Wang, Di Yuan, Yihan Du, Qiang Wan

引用次数: 0

Vibration analysis of planetary roller screw mechanism with time-varying mesh stiffness in non-circular gear engagement 非圆齿轮啮合时变啮合刚度行星滚子螺杆机构振动分析

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-16 DOI: 10.1016/j.jsv.2026.119665

Qianjin Xu , Shangjun Ma , Yao Zhang , Linping Wu , Maodong Niu , Kan Liu

The Planetary Roller Screw Mechanism (PRSM) enables high-precision power transmission via synchronized meshing of thread pairs and modified non-circular gear pairs. While the thread pairs maintain continuous contact, the non-circular gears exhibit periodic engagement-disengagement due to their helix-cut profiles. This inherent disparity in meshing mechanisms establishes the gear pair as the primary vibration excitation source. This study analytically resolves the time-varying mesh stiffness (TVMS) of non-circular gears and thread-pair contact stiffness to construct a multi-degree-of-freedom coupled dynamic model using lumped-parameter theory. The simulated vibration modes—classified as torsional, transverse, and roller modes—yield dynamic responses including displacement, velocity, and acceleration spectra for all components. Experimental validation confirms the model’s accuracy. The study found that the average TVMS of non-circular gears is 28 % lower than that of standard gears, and the internal ring gear is the vibration source of the PRSM system. The findings provide a quantifiable design basis for vibration control and condition monitoring in high-performance PRSM systems.

行星滚子螺杆机构（PRSM）通过同步啮合螺纹副和修改的非圆齿轮副实现高精度动力传输。当螺纹对保持连续接触时，非圆齿轮由于其螺旋形切削轮廓而表现出周期性的啮合-分离。啮合机构的这种固有差异使齿轮副成为主要的激振源。本文采用集总参数理论解析求解非圆齿轮时变啮合刚度和线副接触刚度，建立了多自由度耦合动力学模型。模拟的振动模式——分为扭转、横向和滚轴模式——产生了包括所有部件的位移、速度和加速度谱在内的动态响应。实验验证了模型的准确性。研究发现，非圆齿轮的平均TVMS比标准齿轮低28%，内环齿轮是PRSM系统的振动源。研究结果为高性能永磁同步电机系统的振动控制和状态监测提供了可量化的设计依据。

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引用次数: 0

Data-driven modeling of global bifurcations and chaos in a mechanical system under delayed and quantized control 时滞和量化控制下机械系统全局分岔和混沌的数据驱动建模

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-16 DOI: 10.1016/j.jsv.2026.119660

Giacomo Abbasciano , Balázs Endrész , Gábor Stépán , George Haller

We illustrate how the recent theory of Spectral Submanifolds (SSM) can capture global bifurcations and complex dynamics in mechanical systems even under delay and spatial discretization. Specifically, we build a parameter-dependent SSM-reduced model that predicts global heteroclinic and local bifurcations in a Furuta pendulum under control with delay, and verify these predictions numerically. Under additional spatial discretization of the digital controller, we also obtain an SSM-reduced model that correctly reproduces a numerically and experimentally observed microchaotic attractor in the system.

我们说明了谱子流形（SSM）的最新理论如何在延迟和空间离散下捕获机械系统中的全局分岔和复杂动力学。具体而言，我们建立了一个参数依赖的ssm简化模型，该模型预测了具有时滞控制的古立摆的全局异斜和局部分岔，并通过数值验证了这些预测。在数字控制器的额外空间离散化下，我们还获得了一个ssm简化模型，该模型正确地再现了系统中数值和实验观察到的微混沌吸引子。

引用次数: 0

An event-driven time-domain sensitivity method for optimizing parameters of vibro-impact NES cells to suppress multi-mode vibration 一种事件驱动的时域灵敏度方法用于优化振冲NES单元抑制多模态振动的参数

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-16 DOI: 10.1016/j.jsv.2026.119664

Xueyi Jiang , Zhong-Rong Lu , Xuliang Lin , Jie Yuan , Li Wang , Dahao Yang

The effectiveness of Vibro-Impact Nonlinear Energy Sink cells (VI-NES cells) in suppressing multi-mode vibration is highly sensitive to contact stiffness, mass ratio, and impact gap, necessitating precise tuning of these parameters. This paper develops an event-driven sensitivity method to optimize a time-domain objective function, automatically obtaining cells’ parameters with approximately global optimized vibration suppression efficiency. First, the vibro-impact process between VI-NES cells and a host structure is regularized as a Hertzian model with linear contact stiffness and damping, yielding explicitly piecewise linear forces governed by contact-separation phase transitions. Subsequently, an event-driven time integration algorithm is developed to analyze dynamic responses by detecting transition points. Before and after the contact-separation transition points, the sensitivity affine relation is derived in detail, resulting in the time-domain response sensitivity with respect to mass and impact gap. Ultimately, the acquired response sensitivities and Tikhonov regularization are applied to optimize a time-domain objective function about VI-NES parameters, minimizing the dynamic vibration responses of the host structure. Numerical studies validate that the proposed method enhances the multi-mode vibration suppression performance of VI-NES cells, and clarifies the energy dissipation, targeted energy transfer, and coupling mechanics of VI-NES cells, offering an essential framework toward large-scale simulations and optimization of the host structure with VI-NES cells.

振动冲击非线性能量汇单元（VI-NES单元）抑制多模态振动的有效性对接触刚度、质量比和冲击间隙高度敏感，需要对这些参数进行精确调谐。本文提出了一种事件驱动的灵敏度方法来优化时域目标函数，以近似全局优化的抑振效率自动获取单元参数。首先，VI-NES单元与主体结构之间的振动冲击过程被正则化为具有线性接触刚度和阻尼的赫兹模型，得到由接触分离相变控制的明确分段线性力。随后，提出了一种事件驱动的时间积分算法，通过检测过渡点来分析动态响应。详细推导了接触分离过渡点前后的灵敏度仿射关系，得到了相对于质量和冲击间隙的时域响应灵敏度。最后，利用获得的响应灵敏度和Tikhonov正则化对VI-NES参数的时域目标函数进行优化，使主体结构的动态振动响应最小化。数值研究表明，该方法提高了VI-NES单元的多模态振动抑制性能，阐明了VI-NES单元的能量耗散、定向能量传递和耦合机制，为大规模模拟和优化VI-NES单元的宿主结构提供了必要的框架。

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引用次数: 0

Elastic wave scattering in metamaterials with localized defects 具有局部缺陷的超材料中的弹性波散射

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-15 DOI: 10.1016/j.jsv.2026.119663

Charles Dorn

This work presents a semi-analytical multiple scattering formulation for elastic waves in periodic media with defects. We model the scattering of Bloch waves interacting with defects of arbitrary strength that are on a length scale much smaller than relevant wavelengths. The basis for the proposed framework is the far-field asymptotic approximation of the lattice Green’s function represented in terms of Bloch eigenfunctions. Thus, it is applicable to any periodic material whose dispersion relations and corresponding mode shapes are available either analytically or numerically. The local perturbation method is used to resolve the singularity in the far-field lattice Green’s function, enabling the derivation of a tractable multiple scattering system. Examples are presented showing agreement between the scattering model and high-fidelity transient simulations in the context of a mass-spring network and a beam-based metamaterial. The proposed modeling framework is computationally efficient, opening the door to inverse problems such as the design of defects for wave manipulation. We present the inverse design of a set of defects embedded in a periodic metamaterial for wave guiding, demonstrating that our scattering model is an effective tool for exploring the vast design space of defect engineering in metamaterials.

本文提出了含缺陷周期性介质中弹性波的半解析多重散射公式。我们模拟了布洛赫波与任意强度缺陷相互作用的散射，这些缺陷的长度尺度远小于相关波长。所提出的框架的基础是晶格格林函数的远场渐近逼近，用Bloch特征函数表示。因此，它适用于任何周期性材料，其色散关系和相应的模态振型无论是解析的还是数值的。采用局部摄动法解决了远场晶格格林函数中的奇异性，从而推导出一个可处理的多重散射系统。举例表明，在质量弹簧网络和基于光束的超材料的背景下，散射模型与高保真瞬态模拟之间的一致性。所提出的建模框架计算效率高，为波浪操纵缺陷设计等反问题打开了大门。我们提出了一组嵌入在周期性超材料中的缺陷的逆设计用于导波，表明我们的散射模型是探索超材料缺陷工程设计空间的有效工具。

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引用次数: 0

Phenomenological friction modulation and near-field acoustic signatures in a slender post-buckled beam with rolling–stick–slip contact 具有滚动-粘-滑接触的细长后屈曲梁的现象摩擦调制和近场声学特征

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-14 DOI: 10.1016/j.jsv.2026.119661

Paweł Olejnik, Yared D. Desta

This work investigates the tribo-structural dynamics of a slender post-buckled beam interacting with a translating surface through rolling, sticking and slipping at a line contact. Extreme slenderness, strong geometric nonlinearity and compliant boundary conditions create a highly sensitive frictional environment in which small variations in contact kinematics generate measurable near-field acoustic emission. A dedicated experimental setup was developed to synchronously record beam motion, roller rotation, contact forces and near-field pressure signatures.

A nonlinear mechanical model is formulated using Euler–Bernoulli kinematics with von Kármán strain, Hertzian normal contact and a smooth velocity-dependent friction law reproducing rolling and stick–slip transitions. Motivated by experimental observations that near-field acoustic activity correlates with cycle-to-cycle slip variability, a compact phenomenological modulation acting solely on the kinetic friction coefficient is introduced. The measured near-field signal is treated as a bounded, non-energetic observable and used as a diagnostic descriptor of unresolved microscale contact fluctuations, without implying physical acoustic feedback.

Coupled structural–acoustic finite-element simulations reproduce changes in stick–slip periodicity, effective damping and the tonal components of the measured acoustic response. The resulting framework provides an energetically admissible diagnostic perspective on tribo-acoustic behaviour in slender post-buckled structures with rolling contact and addresses an under-explored relationship between near-field sound and frictional sliding variability.

这项工作研究了一个细长的后屈曲梁通过滚动、粘着和滑动与平移表面相互作用的摩擦结构动力学。极端的长细度，强几何非线性和柔顺的边界条件创造了一个高度敏感的摩擦环境，其中接触运动学的微小变化产生可测量的近场声发射。开发了专用实验装置，用于同步记录梁运动、滚子旋转、接触力和近场压力特征。利用Euler-Bernoulli运动学模型，结合von Kármán应变、赫兹法向接触和与速度相关的光滑摩擦律，建立了一个非线性力学模型，再现了滚动和粘滑过渡。基于近场声活动与周期间滑移变化相关的实验观察，本文引入了一种仅作用于动摩擦系数的紧凑现象学调制。测量的近场信号被视为有界的、非能量的可观测信号，并被用作未解决的微尺度接触波动的诊断描述符，而不暗示物理声学反馈。耦合结构-声学有限元模拟再现了粘滑周期性、有效阻尼和测量声响应的音调分量的变化。由此产生的框架为具有滚动接触的细长后屈曲结构的摩擦声学行为提供了能量上可接受的诊断视角，并解决了近场声音与摩擦滑动变异性之间未被探索的关系。

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引用次数: 0

A separation-of-variable dynamic stiffness method for the free vibration of thin orthotropic rectangular plates with general homogeneous boundary conditions 一般均匀边界条件下正交各向异性矩形薄板自由振动的变动刚度分离方法

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-14 DOI: 10.1016/j.jsv.2026.119639

Shiyi Mei , Colin Caprani , Daniel Cantero

A separation-of-variable dynamic stiffness method (SOV-DSM) is proposed for the free vibration analysis of an thin orthotropic rectangular plate with general homogeneous boundary conditions. Firstly, the extended SOV solution satisfying Rayleigh’s principle is extended to handle arbitrary boundary conditions and then applied to develop closed-form dynamic stiffness formulations. Then, an enhanced Wittrick-Williams (W-W) algorithm is used to solve the eigenvalue problem rather than solving the highly nonlinear eigenvalue equations. The J₀ count problem involved in applying the W-W algorithm is addressed by providing an explicit and closed-form expression for the J₀ term based on the characteristics of the SOV solution. Furthermore, a numerical technique is provided to calculate the mode shape of the plate with any arbitrary boundary conditions. The accuracy of the proposed method is validated through numerical experiments by comparison with other analytical solutions.

针对具有一般均匀边界条件的正交各向异性矩形薄板的自由振动问题，提出了变动刚度分离法。首先，将满足瑞利原理的扩展SOV解扩展到处理任意边界条件，然后应用于建立封闭形式的动刚度公式。然后，采用改进的Wittrick-Williams （W-W）算法求解特征值问题，而不是求解高度非线性的特征值方程。通过基于SOV解的特征为J0项提供显式和封闭形式的表达式，解决了应用W-W算法所涉及的J0计数问题。此外，还提供了一种计算任意边界条件下板振型的数值方法。通过数值实验与其它解析解的比较，验证了所提方法的准确性。

引用次数: 0

Double bandgap formation in a locally resonant metamaterial micromorphic beam 局部共振超材料微晶束中双带隙的形成

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-12 DOI: 10.1016/j.jsv.2026.119659

M. Trabelssi , S. El-Borgi , N. Challamel , M.I. Friswell

The present study investigates bandgap formation in micromorphic metamaterial Euler-Bernoulli beams, with the problem also modeled using a nonlocal strain gradient framework. Both models are mathematically well-posed, sharing identical governing equations but differing in the definiteness of their potential energy. Multiple oscillators, arranged in two distinct configurations according to the local resonance principle, are employed to realize a double bandgap structure. Application of Hamilton’s principle yields the non-dimensional governing equations of motion, expressed as a sixth-order system with corresponding boundary conditions. Bandgap edge frequencies are determined from wave dispersion analysis in an infinitely long beam by means of periodic unit cell modeling. Dispersion relations derived through homogenization and transfer matrix methods are consistent with each other and with previously established results. Two homogenization approaches are examined: a one-field displacement-based formulation, which neglects nonlocal oscillator inertia and fails to guarantee asymptotic consistency when the nonlocal and strain gradient parameters are equal and large; and a two-field formulation, which resolves this limitation and preserves consistency. Dispersion curves obtained from both homogenization schemes are compared with those from the transfer matrix method to assess accuracy. The dispersion characteristics derived from the infinite medium formulation are further validated by frequency response functions of a finite-length nanobeam, demonstrating agreement between spectral predictions and bounded system dynamics. Finally, a parametric study explores the influence of key parameters, including the nonlocal and strain gradient coefficients, unit cell length, and resonator-to-unit-cell mass ratio, on bandgap formation in metamaterial beams.

本研究研究了微晶超材料欧拉-伯努利梁中的带隙形成，并使用非局部应变梯度框架对该问题进行了建模。这两个模型在数学上都是很好的，共享相同的控制方程，但在势能的确定性上有所不同。采用多振子，根据局部共振原理，以两种不同的构型排列，实现双带隙结构。应用哈密顿原理得到无量纲运动控制方程，表示为具有相应边界条件的六阶系统。利用周期单元胞模型对无限长波束中的色散分析确定了带隙边缘频率。通过均匀化和传递矩阵方法推导出的色散关系相互一致，并与前人的结果一致。研究了两种均匀化方法：一种基于单场位移的公式，当非局部和应变梯度参数相等且较大时，该公式忽略了非局部振子惯性，不能保证渐近一致性；还有一个双场公式，它解决了这个限制并保持了一致性。将两种均质方案得到的色散曲线与传递矩阵法得到的色散曲线进行了比较，以评估其准确性。由无限介质公式导出的色散特性通过有限长度纳米光束的频率响应函数进一步验证，证明了光谱预测与有界系统动力学之间的一致性。最后，参数研究探讨了关键参数，包括非局部和应变梯度系数，单元胞长度和谐振器-单元胞质量比，对超材料光束中带隙形成的影响。

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引用次数: 0

Corrigendum to “Vibration characteristics of integrally mistuned turbine blisks with hard-coating and bladed multi-packet shrouds” [Journal of Sound and Vibration, Volume 625, 17 March 2026, 119607] “带有硬涂层和叶片多包护罩的整体失谐涡轮叶片的振动特性”的勘误[声音与振动杂志，625卷，2026年3月17日，119607]

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration

Pub Date : 2026-01-12 DOI: 10.1016/j.jsv.2026.119655

Wensai Ma , Bin Bai , Xiang Li , Xinye Li , Shichuan Wang , Gang Chen

引用次数: 0

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