Journal of Sound and Vibration最新文献

Spectral characterization of wave scattering at a granular–elastic solid interface: From hyperbolic wave propagation to near-parabolic diffusion 颗粒-弹性固体界面波散射的光谱表征：从双曲波传播到近抛物线扩散

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-01-12 DOI: 10.1016/j.jsv.2026.119658

Joshua R. Tempelman , Chongan Wang , Alexander F. Vakakis

{"title":"Spectral characterization of wave scattering at a granular–elastic solid interface: From hyperbolic wave propagation to near-parabolic diffusion","authors":"Joshua R. Tempelman , Chongan Wang , Alexander F. Vakakis","doi":"10.1016/j.jsv.2026.119658","DOIUrl":"10.1016/j.jsv.2026.119658","url":null,"abstract":"<div><div>We present a method based on acoustic wavenumber imaging algorithms to quantify the spectral content of strongly nonlinear energy scattering of a propagating wavefront across the discrete-continuum interface of a 2D hybrid system composed of an ordered granular layer in contact with a thin elastic plate. We consider snapshots of the transmitted wavefront at given time instants, which are filtered across the wavenumber domain by applying the spatial Fourier Transform (FT), and then the filtered wavefields are transformed back to the spatial domain by inverse spatial FT. This yields a spectral decomposition of the given snapshots at varying center wavenumbers. Based on this postprocessing method, the scattering of the kinetic energy in the receiving medium (plate) can be studied in the wavenumber-time domain, proving a quantitative measure of the nonlinear scattering of the transmitted wavefront by the strongly nonlinear 2D granular layer.This postprocessing method enables the detailed quantitative study of the scattering and spectral energy redistribution of propagating wavepackets in elastic media with embedded linear or nonlinear layers or inclusions.In addition, we show that the spectral evolution of a propagating wavefront past a granular interface exhibits diffusion-like behavior in the wavenumber domain, drawing an analogy between parabolic heat diffusion and classical hyperbolic elastodynamic energy transport.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119658"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146193199","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 validation of the Asymptotic Mistuning Model for studying the forced response of bladed disks 研究叶片盘强迫响应的渐近失谐模型的实验验证

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-02-05 DOI: 10.1016/j.jsv.2026.119697

Salvador Rodríguez-Blanco , Laurent Blanc , Valdo Pagès , Nicolas Guérin , Cécile Dumartineix , Claude Gibert , Fabrice Thouverez

{"title":"Experimental validation of the Asymptotic Mistuning Model for studying the forced response of bladed disks","authors":"Salvador Rodríguez-Blanco , Laurent Blanc , Valdo Pagès , Nicolas Guérin , Cécile Dumartineix , Claude Gibert , Fabrice Thouverez","doi":"10.1016/j.jsv.2026.119697","DOIUrl":"10.1016/j.jsv.2026.119697","url":null,"abstract":"<div><div>This paper presents a comprehensive experimental validation of a reduced order model based on the Asymptotic Mistuning Model (AMM) method for computing the response of mistuned bladed disks. Bladed disks are important components in aircraft propulsion systems, and their dynamic response is strongly affected by the presence of small differences between sectors. Classically, each sector contains a blade and an associated angular domain of the disk. Under cyclic symmetry assumption, only one sector needs calculation, but this assumption fails to describe mistuned disks correctly. Since detailed simulations of mistuned systems are computationally expensive, reduced order models appear as valuable tools for providing an efficient approach to investigate mistuning effects. In this work, the AMM is validated with a dedicated experiment performed on a compressor monobloc bladed disk (blisk) under rotating conditions in a vacuum environment. An intentional mistuning pattern is designed using the model and added to the physical blisk. The response of the mistuned system is measured using strain gauges located at the blade roots, while it is subjected to different engine order excitations and rotational speeds. The experimental results are compared against the model predictions. Key parameters, such as resonance frequencies, amplitudes, and mode components of the response, are analyzed to assess the accuracy and efficiency of the AMM to capture mistuning induced effects.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119697"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146193198","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

Finite element implementation of novel low-order continuum models for the dynamics of a mass-in-mass lattice with long-range interactions: A discrete-continuum-discrete approach 具有长程相互作用的质量中质量晶格动力学的新型低阶连续体模型的有限元实现：离散-连续-离散方法

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-02-05 DOI: 10.1016/j.jsv.2026.119696

F. Gómez-Silva , I. Andrianov

{"title":"Finite element implementation of novel low-order continuum models for the dynamics of a mass-in-mass lattice with long-range interactions: A discrete-continuum-discrete approach","authors":"F. Gómez-Silva , I. Andrianov","doi":"10.1016/j.jsv.2026.119696","DOIUrl":"10.1016/j.jsv.2026.119696","url":null,"abstract":"<div><div>This work presents a finite element (FE) methodology to model a <em>mass-in-mass</em> lattice system with long-range interactions through a two-step <em>discrete-continuum-discrete</em> approach. In the first step, standard and non-standard continualization procedures are employed to derive non-classical continuum models from the discrete lattice. Non-classical models with micro-inertia reveal high accuracy, not presenting physical inconsistencies while avoiding higher-order spatial derivatives that require extra boundary conditions whose physical meaning is unclear. The predictive capabilities of the new continuum models are assessed by comparing their dispersion relations and natural frequencies with those of the discrete system. In the second step, the novel continuum models are spatially discretized using FE models. Special emphasis is placed on the treatment of micro-inertia terms in the mass matrix, which enables a separation between the microstructural length scale and the numerical element size. As a result, element sizes larger than the characteristic length can be used without compromising accuracy, leading to a substantial reduction in degrees of freedom and computational cost. Therefore, the proposed methodology reliably reproduces the dynamic behaviour of the <em>mass-in-mass</em> lattice while providing a versatile framework suitable for heterogeneous materials, complex geometries, and arbitrary boundary conditions. Although demonstrated here for a <em>mass-in-mass</em> system, the approach can be extended to other lattice typologies.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119696"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146154222","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

Investigation of the drag coefficient of rotational fluid damper using computational fluid dynamics 基于计算流体力学的旋转流体阻尼器阻力系数研究

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-02-04 DOI: 10.1016/j.jsv.2026.119688

Ruisheng Ma , Youshen Guo , Haoran Zuo

{"title":"Investigation of the drag coefficient of rotational fluid damper using computational fluid dynamics","authors":"Ruisheng Ma , Youshen Guo , Haoran Zuo","doi":"10.1016/j.jsv.2026.119688","DOIUrl":"10.1016/j.jsv.2026.119688","url":null,"abstract":"<div><div>Dampers are essential devices used to absorb or dissipate vibration energy, contributing significantly to structural vibration control. An innovative rotational fluid damper (RFD) utilizing water as can energy dissipation medium has been developed. This damper generates substantial resistance to relative motion between its terminals when submerged in water, offering a significant damping effect to effectively mitigate excessive vibrations of structures. In this study, computational fluid dynamics (CFD) simulations are employed to thoroughly investigate the mechanical behaviors of the RFD. The configuration and mechanical model of the RFD are first introduced. Subsequently, the CFD model of the RFD is developed in ANSYS/Fluent and validated through comparison with experimental test data. Based on the validated model, the influences of six critical parameters on the drag coefficient of the RFD are comprehensively analyzed, including the Keulegan-Carpenter (<span><math><mrow><mi>K</mi><mi>C</mi></mrow></math></span>) number, oscillation frequency, length-to-radius ratio, thickness-to-radius ratio, number and perforation ratio of the turning plates. The results indicate that when <span><math><mrow><mi>K</mi><mi>C</mi></mrow></math></span> > 0.4, the drag coefficient of the RFD is almost independent of the <span><math><mrow><mi>K</mi><mi>C</mi></mrow></math></span> number, oscillation frequency, length-to-radius ratio, and thickness-to-radius ratio, while it is negatively correlated with the number and perforation ratio of the turning plates. In addition, the drag coefficient of the RFD is significantly influenced by the <span><math><mrow><mi>K</mi><mi>C</mi></mrow></math></span> number when <span><math><mrow><mi>K</mi><mi>C</mi></mrow></math></span> < 0.4. This study provides an in-depth understanding of the RFD and paves the way for potential engineering applications.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119688"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146193197","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

Locking and veering in periodically coupled, homogeneous waveguides and application to two coupled beams 周期耦合均匀波导的锁定和转向以及在两个耦合光束上的应用

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-02-10 DOI: 10.1016/j.jsv.2026.119699

L. Rughunanan, B. Mace, V. Sorokin

{"title":"Locking and veering in periodically coupled, homogeneous waveguides and application to two coupled beams","authors":"L. Rughunanan, B. Mace, V. Sorokin","doi":"10.1016/j.jsv.2026.119699","DOIUrl":"10.1016/j.jsv.2026.119699","url":null,"abstract":"<div><div>Wave propagation in periodic waveguides exhibits well-known pass and stop band behaviour, frequency bands where waves propagate freely or attenuate. This paper concerns two further phenomena - veering and locking - which occur in more complex waveguides where two or more wave modes exist. The analysis specifically concerns two, periodically point-coupled waveguides, which themselves may have periodic construction. The particular case of two point-coupled beams is considered as an example and numerical results presented. The veering and locking phenomena occur around critical points where the dispersion curves of the uncoupled-blocked systems intersect. Veering occurs if these uncoupled dispersion curves have the same slope at the critical point: two propagating wave modes remain propagating in the coupled system. Locking occurs if they have opposite slopes: two propagating wave modes lock together, becoming a pair of attenuating wave modes and an additional stop band is produced. These effects are common in periodic structures in which two or more wave modes exist because free waves involve an infinite sum of space-harmonic components, propagating in both positive and negative directions, and the dispersion curves frequently intersect. Experimental results taken from two, spring-coupled beams are presented to illustrate the behaviour. Frequency response measurements were taken at the same point in a number of adjacent periodic cells. Under the assumption of a known number of Bloch waves propagating in both directions in the structure, the measurements from this array of points on the beam are post-processed using a least-squares procedure to provide estimates of the propagation constants in the coupled system, these estimates agreeing well with predictions especially for propagating and slowly-attenuating Bloch waves.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119699"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146193200","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

Coherent sound source localization of an electric ducted fan by SODIX 用SODIX进行电风扇相干声源定位

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-02-05 DOI: 10.1016/j.jsv.2026.119690

Weiguang Zhang , Zhizhen Wang , Lin Du , Peiqing Liu

{"title":"Coherent sound source localization of an electric ducted fan by SODIX","authors":"Weiguang Zhang , Zhizhen Wang , Lin Du , Peiqing Liu","doi":"10.1016/j.jsv.2026.119690","DOIUrl":"10.1016/j.jsv.2026.119690","url":null,"abstract":"<div><div>Recent developments in the source localization method (SOurce DIrectivity modelling in the cross-spectral matriX, SODIX) enable the determination of complex amplitudes and directivity of distributed partially coherent sources in static engine noise tests. In this paper, the method was successfully employed in the tonal noise study of an electric ducted fan test. High-quality test data were acquired by a densely distributed microphone line array, and the frequency fluctuations of the tones at each harmonic order were examined. The directivities results indicated that the coherence between fan inlet and outlet sound sources significantly affected the far-field noise radiation characteristics. For comparision, two versions of SODIX were used: one was SODIX-classic with the assumptions of incoherent sources and real valued source amplitudes, and the other was SODIX-bomp, which used the Block Orthogonal Matching Pursuit (BOMP) algorithm with the assumptions of partially coherent sources and complex valued source amplitudes. SODIX-bomp achieved cleaner and more reliable sound source localization results. Through regional integration, the fan inlet and outlet sound sources were reasonably decomposed, and the reconstructed far-field directivities were consistent with the experimental results. In summary, coherence must be given serious attention in noise characteristic studies for electric ducted fans, and the SODIX algorithm that takes coherence into account represents a promising method.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119690"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146154221","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

Efficient prediction of the response of finite acoustic black hole structures under distributed loads 分布荷载作用下有限声黑洞结构响应的有效预测

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-01-28 DOI: 10.1016/j.jsv.2026.119674

Xingxing Lin , Vladislav Sorokin , Andrew Hall , Xueyi Zhao

{"title":"Efficient prediction of the response of finite acoustic black hole structures under distributed loads","authors":"Xingxing Lin , Vladislav Sorokin , Andrew Hall , Xueyi Zhao","doi":"10.1016/j.jsv.2026.119674","DOIUrl":"10.1016/j.jsv.2026.119674","url":null,"abstract":"<div><div>This study presents an analytical approach for investigating the dynamic behaviour of finite Euler-Bernoulli beams with one or more embedded Acoustic Black Holes (ABHs) under distributed loading. The proposed approach is based on the Method of Varying Amplitudes, which enables the computation of natural frequencies and mode shapes for finite structures with thickness modulation. Notably, the approach is applicable to various structural geometries, including classical power-law profiles and harmonic profiles constituting periodic ABH-like structures. The natural frequencies and mode shapes of the beams with incorporated ABHs are used to calculate their response to external arbitrarily distributed loading. Case studies involving both concentrated and distributed loads are used to validate the accuracy and robustness of the proposed method, with results compared to numerical simulations. The approach offers valuable insights for the design and optimization of finite ABH structures for vibration suppression under arbitrarily distributed loading and applications in noise control.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119674"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146193202","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 investigation of the noise reduction mechanisms of over-the-rotor liners for electric ducted fan applications using a duct acoustics approach 使用管道声学方法对电动管道风扇应用的过转子衬套降噪机制进行了研究

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-26 Epub Date: 2026-02-05 DOI: 10.1016/j.jsv.2026.119685

Peidong Zhao , Cheng Yang

{"title":"An investigation of the noise reduction mechanisms of over-the-rotor liners for electric ducted fan applications using a duct acoustics approach","authors":"Peidong Zhao , Cheng Yang","doi":"10.1016/j.jsv.2026.119685","DOIUrl":"10.1016/j.jsv.2026.119685","url":null,"abstract":"<div><div>This work extends our prior study (Physics of Fluids, 35, 107,144, 2023) on over-the-rotor (OTR) liners, which revealed that liners in the fan near-field exhibit dramatically different orifice flow characteristics compared to conventional liners subject to purely acoustic excitation superimposed on a grazing flow. While previous work primarily focused on orifice flow dynamics, this study systematically investigates the noise reduction mechanisms. A novel method is proposed to separate the acoustic attenuation and source modification effects of the OTR liner, allowing a quantitative analysis of the two effects by examining changes in duct mode amplitudes. Results show that amplitudes of the duct modes excited by rotor blades decrease across a broadband due to the source modification effect, and further noise reduction is observed with increasing fan speed. The acoustic attenuation effect is primarily observed within the frequency range corresponding to the acoustic absorption bandwidth of the OTR liner, but its contribution to overall noise reduction is less significant than that of the source modification effect. Moreover, the OTR liner has a marginal impact on the amplitudes of the duct modes excited by the stator. The proposed method offers a new approach to studying the noise reduction mechanisms of OTR liners.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"630 ","pages":"Article 119685"},"PeriodicalIF":4.9,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146193201","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

Performance limitations and vibration control for isolation systems 隔离系统的性能限制和振动控制

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-12 Epub Date: 2026-02-03 DOI: 10.1016/j.jsv.2026.119677

Hongchao Li , Michael Z Q Chen , Chanying Li

{"title":"Performance limitations and vibration control for isolation systems","authors":"Hongchao Li , Michael Z Q Chen , Chanying Li","doi":"10.1016/j.jsv.2026.119677","DOIUrl":"10.1016/j.jsv.2026.119677","url":null,"abstract":"<div><div>Over the past few decades, various passive and active vibration isolators have been developed to enhance isolation performance for mechanical systems and equipment. However, a fundamental question remains: what is the maximum achievable performance of an isolation system using these isolators? This paper investigates the inherent performance limitations of isolation systems and proposes strategies for vibration control within these constraints. In the first part, we employ the Youla parametrization to derive analytical expressions for the performance limitations of the frequency response functions (FRFs) of the isolation system, including the maximum value and invariant points of single FRF, as well as inherent trade-offs among different FRFs. In the second part, these theoretical limitations are applied to vibration control. Based on the derived performance limitations, we propose the procedures for achieving FRF assignment in the isolation system. Additionally, a simple controller is proposed for the isolation system, enabling effective vibration attenuation over almost the entire frequency range with only three adjustable parameters. Numerical examples demonstrate that the isolation system with the proposed controllers has good time-domain and frequency-domain performance.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119677"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171565","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

Thermo-mechanical vibration analysis of bi-directional functionally graded plates in bi-directional temperature fields 双向温度场下双向功能梯度板的热-机械振动分析

IF 4.9 2区工程技术

Journal of Sound and Vibration Pub Date : 2026-05-12 Epub Date: 2026-02-03 DOI: 10.1016/j.jsv.2026.119684

Chen Chen , Daokui Li , Lilin Zhou , Caizhi Fan

{"title":"Thermo-mechanical vibration analysis of bi-directional functionally graded plates in bi-directional temperature fields","authors":"Chen Chen , Daokui Li , Lilin Zhou , Caizhi Fan","doi":"10.1016/j.jsv.2026.119684","DOIUrl":"10.1016/j.jsv.2026.119684","url":null,"abstract":"<div><div>Characterized by continuous material gradient in two spatial directions, bi-directional functionally graded materials (2D FGMs) are born to adapt to the bi-directional temperature fields (2D TF) near the stagnation point of hypersonic vehicle wing leading edges. Their unique configuration mitigates peak thermal stresses and homogenizes stress distribution, which exhibits promising potential in hypersonic vehicles. Existing studies predominantly focused on uniform/unidirectional TFs or axisymmetric geometries, with natural frequencies derived numerically. This study investigated the dynamic characteristics of 2D FGM square plates with temperature-dependent material properties subjected to 2D TFs that approximating service conditions for the first time. First, a 2D TF model conforming to the heat conduction equation was established. Second, governing equations were derived based on the power-law function, four-variable shear deformation theory, and Hamilton’s principle. Subsequently, an analytical framework integrating the Levy method, the perturbation approach, and the state-space method was developed and validated. Finally, the compound parametric effects of TFs, power-law indexes, and material gradients were investigated. It was found that, frequencies and thermally induced forces are more sensitive to the temperature gradient along the thickness direction; The 2D material gradient coordinated with the 2D TF and effectively suppresses thermally induced forces across most regions.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"629 ","pages":"Article 119684"},"PeriodicalIF":4.9,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171674","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