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

An enhanced beamsteering algorithm based on MVDR for a multi-channel parametric array loudspeaker array 基于 MVDR 的多通道参数阵列扬声器阵列波束转向增强算法

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-11 DOI: 10.1016/j.jsv.2024.118768

Yunxi Zhu , Yankai Zhang , Fengyi Fan , Wenyao Ma , Liwen Qin , Zheng Kuang , Ming Wu , Jun Yang

{"title":"An enhanced beamsteering algorithm based on MVDR for a multi-channel parametric array loudspeaker array","authors":"Yunxi Zhu , Yankai Zhang , Fengyi Fan , Wenyao Ma , Liwen Qin , Zheng Kuang , Ming Wu , Jun Yang","doi":"10.1016/j.jsv.2024.118768","DOIUrl":"10.1016/j.jsv.2024.118768","url":null,"abstract":"<div><div>A multi-channel parametric array loudspeaker (PAL) array can steer an audio beam using a digital signal processing technique. However, it faces the challenge posed by grating lobes in the ultrasonic radiation pattern, which leads to unwanted sidelobes in the steering audio beam when the Nyquist criterion is not satisfied due to short ultrasonic wavelengths. As a result, the audio beam not only fails to steer in the desired direction but also loses its inherent advantage of high directivity when using a beamsteer with a delay-and-sum (DAS) structure. This work proposes an enhanced beamsteering algorithm to suppress the sidelobes by optimizing the channel weight coefficients. The nonlinear optimization problem is transformed into a linear expression, making the minimum-variance-distortionless-response (MVDR) algorithm applicable. Both simulations and experiments validate the effective suppression of sidelobes and the mitigation of sound fuzziness within the range from the sidelobe to the mainlobe. The audio beam successfully steers in the desired direction and maintains a high directivity. However, the performance of the algorithm deteriorates at high audio frequencies due to the inherent physical limitations of wave interference in sound field control strategies.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"595 ","pages":"Article 118768"},"PeriodicalIF":4.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527167","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

Stochastic optimization of a mass-in-mass cell with piecewise hybrid nonlinear–linear restoring force 具有片状混合非线性-线性恢复力的质量-质量单元的随机优化

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-11 DOI: 10.1016/j.jsv.2024.118755

C. da Silveira Zanin , S. Missoum , A. Ture Savadkoohi , S. Baguet , E. Gourdon , R. Dufour

{"title":"Stochastic optimization of a mass-in-mass cell with piecewise hybrid nonlinear–linear restoring force","authors":"C. da Silveira Zanin , S. Missoum , A. Ture Savadkoohi , S. Baguet , E. Gourdon , R. Dufour","doi":"10.1016/j.jsv.2024.118755","DOIUrl":"10.1016/j.jsv.2024.118755","url":null,"abstract":"<div><div>This article investigates the optimization under uncertainty of a mass-in-mass meta-cell for its potential use within a metamaterial. The specificity of the proposed mass-in-mass system stems from the hybrid nonlinear–linear stiffness at the inner level. It is well known that these systems are highly sensitivity to small perturbations in loading conditions or design parameters. In fact, the sensitivity is such that the system can exhibit discontinuous behaviors. Therefore the proposed optimization approach not only accounts for sources of uncertainties but also can handle discontinuous responses. The objective of the stochastic optimization is to find the stiffness properties of the mass-in-mass system which minimize the expected value of a specific efficiency metric. In order to better understand the system’s dynamic behavior and the origins of the discontinuities, slow invariant manifolds and frequency response curves are provided. The efficiency of the optimized system with hybrid stiffness is compared with that of a similar optimized system featuring pure cubic nonlinearity.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"595 ","pages":"Article 118755"},"PeriodicalIF":4.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527007","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

Analysis and mitigation of uncertainties in damage identification by modal-curvature based methods 用基于模态曲率的方法分析和缓解损伤识别中的不确定性

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-10 DOI: 10.1016/j.jsv.2024.118769

Daniele Dessi , Fabio Passacantilli , Andrea Venturi

{"title":"Analysis and mitigation of uncertainties in damage identification by modal-curvature based methods","authors":"Daniele Dessi , Fabio Passacantilli , Andrea Venturi","doi":"10.1016/j.jsv.2024.118769","DOIUrl":"10.1016/j.jsv.2024.118769","url":null,"abstract":"<div><div>The objective of this paper is to address and reduce the uncertainties associated with measurement noise and discretization in damage identification methods based on modal curvature analysis. The experimental case study considers the local reduction in the bending stiffness of a slender beam under free-free and simply supported boundary conditions. First, the analysis of error sources and their propagation is theoretically set up. Second, the mitigation of uncertainties in damage localization is pursued using a two-stage approach based on multiple hypothesis testing relative to the normalized indices and the definition of a combined macro-index. Finally, the Monte Carlo method is exploited to obtain the statistical error distribution of the experimental damage position and severity predictions by randomizing the numerical displacement mode shapes with the identified noise. The present analysis allows us to find the optimal number of sensors that minimizes the combination of bias and truncation errors, to highlight how sensor spacing and data noise affect damage localization, and to determine the uncertainty bounds of the predicted damage severity. The two-stage approach, enhanced by selecting thresholds related to real noise levels and tuned on SHM objectives, appears to improve identification accuracy compared to the separate use of damage indices based on absolute confidence levels.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"596 ","pages":"Article 118769"},"PeriodicalIF":4.3,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561044","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

Shape considerations for the design of propellers with trailing edge serrations 带后缘锯齿螺旋桨设计的形状考虑因素

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-10 DOI: 10.1016/j.jsv.2024.118771

Jorge Santamaria , André Bierrenbach-Lima , Marlène Sanjosé , Stéphane Moreau

{"title":"Shape considerations for the design of propellers with trailing edge serrations","authors":"Jorge Santamaria , André Bierrenbach-Lima , Marlène Sanjosé , Stéphane Moreau","doi":"10.1016/j.jsv.2024.118771","DOIUrl":"10.1016/j.jsv.2024.118771","url":null,"abstract":"<div><div>Noise reductions due to trailing edge serrations of several representative unmanned air vehicle propellers are calculated using a low-order methodology based on RANS simulations coupled with an extension of Ayton’s model proposed by Li and Lee, which provides a heuristic three-dimensional model for finite span applicable to rotor blades. The latter model is validated in the limit of zero serration amplitude against Amiet’s and Schlinker and Amiet’s models, finding good agreement at high frequencies for both airfoils and rotating blade elements. Similar good validation results are obtained for finite serrations by comparing with experiments achieved on the Controlled Diffusion airfoil at Université de Sherbrooke, and with calculations for a serrated blade element by Tian and Lyu. The coupled methodology is then validated both aerodynamically and acoustically with ISAE measurements for a representative drone propeller at different rotational speeds. The corresponding serrated model is then used to calculate noise reductions caused by different shapes. The square wave serration is shown to outperform the sawtooth and sinusoidal shapes for all frequencies and observer angles for small propeller blades typically used for drones. Yet, for larger chord blades typically used for ducted fans, combinations of sawtooth and sinusoidal serrations provide better noise reductions.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"595 ","pages":"Article 118771"},"PeriodicalIF":4.3,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527005","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

Enhancing wave retarding and sound absorption performances in perforation-modulated sonic black hole structures 增强穿孔调制声波黑洞结构的阻波和吸声性能

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-09 DOI: 10.1016/j.jsv.2024.118765

Sihui Li, Xiang Yu, Li Cheng

{"title":"Enhancing wave retarding and sound absorption performances in perforation-modulated sonic black hole structures","authors":"Sihui Li, Xiang Yu, Li Cheng","doi":"10.1016/j.jsv.2024.118765","DOIUrl":"10.1016/j.jsv.2024.118765","url":null,"abstract":"<div><div>Sonic black hole (SBH) effects in a retarding duct can be exploited for sound wave manipulation and absorption. The phenomenon relies on two fundamental physical mechanisms: wave speed reduction and energy dissipation. In this study, we demonstrate that these two physical processes can be meticulously balanced through adjusting the perforation parameters in a perforation-modulated SBH (PMSBH). To elucidate the mechanism of slow wave generation and the effect of perforation parameters, an analytic model based on the Wentzel-Kramers-Brillouin (WKB) solutions to the linear acoustic wave equation is established. Alongside transient finite element simulations, the study unveils the roles that major physical parameters play in terms of regulating sound speed and sound absorption. The perforation ratio of the PMSBH is identified as the dominant factor affecting the slow-sound effect, with an optimal range of above 10 % for a PMSBH with densely segmented internal rings. Owing to the inclusion of the perforated boundary, prominent slow wave effects can still be maintained even with a reduced number of rings, provided that the perforation ratio is properly chosen within a reduced variation range. In both cases, the identified perforation ratio largely exceeds the conventional range widely adopted in the micro-perforation community when the slow wave effects are absent. On top of this, tuning the hole size can further enhance air friction for better sound absorption. Theoretical and numerical findings are experimentally validated, and the performance of the PMSBH is demonstrated. While bringing forward the concept of tunable design, this study offers physical insights and guidance for realizing effective sound absorbers embracing slow wave principles and perforation-induced sound absorption.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"596 ","pages":"Article 118765"},"PeriodicalIF":4.3,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442079","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

Nonlinear free vibrations of a structurally tailored anisotropic pre-twisted thin-walled beam subjected to large deformations 受大变形影响的结构定制各向异性预扭曲薄壁梁的非线性自由振动

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-09 DOI: 10.1016/j.jsv.2024.118766

G. Deepak Kumar, B. Panigrahi

{"title":"Nonlinear free vibrations of a structurally tailored anisotropic pre-twisted thin-walled beam subjected to large deformations","authors":"G. Deepak Kumar, B. Panigrahi","doi":"10.1016/j.jsv.2024.118766","DOIUrl":"10.1016/j.jsv.2024.118766","url":null,"abstract":"<div><div>It is essential to understand the nonlinear free vibration behaviour of a thin-walled composite structure as they find their applications in harsher environments prone to large deformations. Further, these structures made of fibrous materials, have directional properties for different fibre orientations resulting in a diversified and a complex nonlinear behaviour. In this regard, present work provides a comprehensive mathematical formulation on nonlinear vibration of pre-twisted thin-walled anisotropic box beam. The mathematical model is derived as coupled (flap-lag-extension-torsion) model considering shear deformation and green's strain tensor for large displacements in order to study the influence of nonlinear couplings on the dynamic behaviour. The derived energy equations are presented depending on degree of nonlinearity. These nonlinear equations those derived are nondimensionalized and solved with in the frame work of energy method using classical Ritz approximation. An iterative method is used to solve the nonlinear equations pertaining displacement terms. This nonlinear behaviour is evaluated for two important types of structural tailoring techniques available for thin-walled composite beams namely Circumferentially Asymmetric Stiffness (CAS) and Circumferentially Uniform Stiffness (CUS). It is found that CAS layup experiences significantly severe nonlinear effects compared to CUS due to the presence of 3rd degree nonlinear coupling terms. The variation of nonlinear frequency ratios over different ply angles showing the influence of nonlinearity on fibres orientation is presented for the first time for the two ply lay ups. The influence of degree of nonlinearity on the accuracy of the nonlinear frequencies is evaluated and presented. Moreover, the impact of nonlinearity on the pre-twisted beam is presented for different pre-twist angles.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"596 ","pages":"Article 118766"},"PeriodicalIF":4.3,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446253","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

Nonlinear normal modes and response to random inputs of systems with bilinear stiffness 具有双线性刚度的系统的非线性法向模式和对随机输入的响应

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-09 DOI: 10.1016/j.jsv.2024.118767

Brennen Clark , Matthew S. Allen , Benjamin Pacini

{"title":"Nonlinear normal modes and response to random inputs of systems with bilinear stiffness","authors":"Brennen Clark , Matthew S. Allen , Benjamin Pacini","doi":"10.1016/j.jsv.2024.118767","DOIUrl":"10.1016/j.jsv.2024.118767","url":null,"abstract":"<div><div>This work seeks to provide a comprehensive review of the effects that stiffness bilinearity can have on the nonlinear modes of a system, its response in a random vibration environment, and the connection between the two. Stiffness bilinearity here refers to a continuous piecewise linear force vs displacement function that is composed of two linear regions. This work focuses on a bilinear stiffness function that is regularized so there is a smooth transition at the point where the two linear regions meet. A single-degree-of-freedom system (SDOF) and a two-degree-of-freedom (2DOF) system are explored and several interesting behaviors are shown. The SDOF bilinear spring model is characterized by four parameters: the low amplitude frequency, the ratio of the linear stiffnesses on either side of the transition, the displacement at which the transition occurs, and the rate or sharpness of the transition. The effect of each parameter on the shape of the NNM is described. In a 2DOF system, these parameters have similar effects, but modal coupling is found to play a significant role. When a bilinear system is subjected to random excitation, many harmonics appear in the response for both the SDOF and 2DOF cases. The root-mean-square (RMS) response of the bilinear system can be larger or smaller than the corresponding linear case depending on the values of the parameters and the type of forcing (broadband, bandlimited, in the shape of a vibration mode, etc.). However, many cases were observed in which the RMS response of the bilinear system was almost the same as that of a linear system, and hence the response could be predicted well using linear analysis. It is hoped that the results presented herein can assist engineers in helping to determine when linear analysis would be adequate to predict the failure of a system, when a rigorous nonlinear analysis is required, and what phenomena are likely to be observed in the latter case.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"595 ","pages":"Article 118767"},"PeriodicalIF":4.3,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444764","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

Exact closed-form solution for buckling and free vibration of pipes conveying fluid with intermediate elastic supports 带中间弹性支撑的流体输送管道屈曲和自由振动的精确闭式解

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-09 DOI: 10.1016/j.jsv.2024.118762

Bo Zhu , Ji Zuo Feng , Yang Guo , Yan Qing Wang

{"title":"Exact closed-form solution for buckling and free vibration of pipes conveying fluid with intermediate elastic supports","authors":"Bo Zhu , Ji Zuo Feng , Yang Guo , Yan Qing Wang","doi":"10.1016/j.jsv.2024.118762","DOIUrl":"10.1016/j.jsv.2024.118762","url":null,"abstract":"<div><div>In this paper, the exact closed-form solution is given to investigate the influence of the intermediate elastic support on the buckling and free vibration of an elastically supported pipe. According to the Euler–Bernoulli beam theory, the mechanical model of the pipe is established. The exact equilibrium configuration is derived using the generalised function method without enforcing continuity conditions. A simple solution to the eigenvalue problem is formulated using the methods of complex mode superposition and Laplace transformation. The comparative study shows the differences in the supercritical vibration characteristics and highlights the limitations of previous studies. Parametric studies are carried out to investigate the influence of elastic support and intermediate support conditions on the equilibrium configuration, critical flow velocity, and natural frequency. The results demonstrate that the proposed closed-form solution can determine the support conditions that lead to the maximum critical flow velocity and natural frequency of a pipe with multiple intermediate supports. The maximum values are required to adjust the support conditions leading to the nodes of higher-order equilibrium configurations and complex modes. Furthermore, the natural frequencies of the pipe conveying supercritical fluid no longer satisfy the monotonicity for the support stiffness, the symmetry for the support position, and the ‘zero-point’ property for the support number.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"596 ","pages":"Article 118762"},"PeriodicalIF":4.3,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446254","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

Spatial and frequency identification of the dynamic properties of thin plates with the Frequency-Adapted Virtual Fields Method 利用频率适应虚拟场法在空间和频率上识别薄板的动态特性

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-09 DOI: 10.1016/j.jsv.2024.118760

Nicolas Madinier , Quentin Leclère , Kerem Ege , Alain Berry

{"title":"Spatial and frequency identification of the dynamic properties of thin plates with the Frequency-Adapted Virtual Fields Method","authors":"Nicolas Madinier , Quentin Leclère , Kerem Ege , Alain Berry","doi":"10.1016/j.jsv.2024.118760","DOIUrl":"10.1016/j.jsv.2024.118760","url":null,"abstract":"<div><div>Vibroacoustic inverse methods use the measured response of a vibrating structure to identify a structural parameter or a dynamic load. Two inverse methods are considered, the Force Analysis Technique (FAT) and the Virtual Fields Method (VFM). The Corrected Force Analysis Technique (CFAT) is a variant of FAT that corrects its singularity. This correction allows the method to be applied in the high-frequency domain, when the number of measurement points per flexural wavelength becomes small. In this study, the proposed novelty is the development of a Frequency-Adapted VFM (FA VFM) to the case of a Love–Kirchhoff plate. Thanks to this method, the VFM can now be applied to identify the equivalent bending stiffness and structural damping of a thin plate when the number of measurement points per wavelength is small. The method has previously been developed for an Euler–Bernoulli beam. An experimental identification of the complex bending stiffness of an locally damped aluminium plate using Laser Doppler Velocimetry (LDV) data and the developed method is performed. The experimental study shows for the first time that the FA VFM can be used to map the equivalent bending stiffness and structural damping as a function of position on a plate and identify these parameters as a function of frequency over a large frequency band. The results of the Frequency-Adapted VFM are compared with those of CFAT and the classical VFM approach. FA VFM results are more accurate than those of classical VFM and similar to those of CFAT.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"596 ","pages":"Article 118760"},"PeriodicalIF":4.3,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421729","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

Indirect measurement of bridge surface roughness using vibration responses of a two-axle moving vehicle based on physics-constrained generative adversarial network 基于物理约束生成式对抗网络，利用双轴行驶车辆的振动响应间接测量桥梁表面粗糙度

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2024-10-08 DOI: 10.1016/j.jsv.2024.118763

Junyong Zhou , Zhanyu Zhang , Zeren Jin , Xuan Kong , Xiaohui Wang , Hai Liu

{"title":"Indirect measurement of bridge surface roughness using vibration responses of a two-axle moving vehicle based on physics-constrained generative adversarial network","authors":"Junyong Zhou , Zhanyu Zhang , Zeren Jin , Xuan Kong , Xiaohui Wang , Hai Liu","doi":"10.1016/j.jsv.2024.118763","DOIUrl":"10.1016/j.jsv.2024.118763","url":null,"abstract":"<div><div>This study addresses the challenge of indirectly measuring bridge surface roughness through the vibration responses of a moving vehicle, which is crucial for pavement maintenance and bridge safety assessment. A physics-constrained generative adversarial network (PC-GAN) was proposed for the probabilistic estimation of surface roughness. The method consists of two steps: initially, a GAN informed by physics-based knowledge extracts combined information of bridge vibration deflection and surface roughness from vehicle accelerations. Subsequently, a feed-forward network isolates the bridge surface roughness from the combined data. Numerical examples validate the PC-GAN method, demonstrating sustained high accuracy under challenging conditions, including ISO 8608 level C road roughness, vehicle speeds up to 8 m s<sup>-1</sup>, 10 % deviation in vehicle parameters, 10 % environmental noise, and 10 % vehicle damping ratio. Laboratory tests further confirmed the method's efficacy, with the successful detection of artificial barriers on the bridge surface and a mean relative error of 3.33 % in height estimation. The PC-GAN method is demonstrated to be a robust tool for estimating bridge surface roughness under various numerical and laboratory conditions. These findings provide valuable insights for the rapid inspection of bridge pavement conditions using vibration responses from moving test vehicles.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"595 ","pages":"Article 118763"},"PeriodicalIF":4.3,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421158","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