Journal of Sound and Vibration最新文献_第4页

Distributed dynamic load identification for complex non-rectangular plate 复杂非矩形板的分布动荷载识别

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-29 DOI: 10.1016/j.jsv.2025.119250

Yinshen Wang , Jinhui Jiang , Jicheng Gao , Hefeng Liu

引用次数: 0

Some links between dispersion equations and orthogonality relations, and an application to fluid-structure interaction 色散方程与正交关系之间的联系及其在流固耦合中的应用

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-29 DOI: 10.1016/j.jsv.2025.119249

S.V. Sorokin , C.J. Chapman

引用次数: 0

Thermomechanical transient dynamics of radial rotor–stator contact 径向转子-定子接触的热力瞬态动力学

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-29 DOI: 10.1016/j.jsv.2025.119207

Coline Jacobs , Fabrice Thouverez , Mathias Legrand , Patricio Almeida

{"title":"Thermomechanical transient dynamics of radial rotor–stator contact","authors":"Coline Jacobs , Fabrice Thouverez , Mathias Legrand , Patricio Almeida","doi":"10.1016/j.jsv.2025.119207","DOIUrl":"10.1016/j.jsv.2025.119207","url":null,"abstract":"<div><div>The present paper discusses the numerical investigation of structural interactions initiated radially between a turbine shaft and an annular stator. The rotorshaft is modeled under the rigid bodies assumption while the stator is discretized in space with curved Bernoulli beam elements. The turbomachine is assumed to be driven by two torques: the first one is prescribed from aerodynamics while the second one is induced by sliding friction from Coulomb’s model and must be assessed. The study is motivated by the need to predict the dynamic behavior of the rotorshaft in the presence of radial contact between the labyrinth and the annular stator. If rotordynamics accounting for unilateral and frictional contact is widely developed in literature, the combination with an unknown rotational velocity and thermomechanical coupling must still be investigated. Indeed, heat generation and subsequent thermal expansion is expected to modify the contact interface and the dynamic response. The system is solved in the time domain and contact treatment is achieved though a modified version of the Carpenter algorithm. The identification of the conditions affecting the rotational speed is achieved through a sensitivity analysis on the stator properties, friction coefficient and coefficient of thermal expansion. Results confirm that the higher the friction coefficient and stator stiffness are, the lower the maximum rotational velocity value is. It is also shown that high temperatures are located in specific regions on the stator and that the temperature peaks are amplified with thermal expansion.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119207"},"PeriodicalIF":4.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240706","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

Coupling mechanisms of large-deformable beams and nonlinear acoustic waves in unbounded domains of heavy fluids 重流体无界域中大变形梁与非线性声波的耦合机理

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-28 DOI: 10.1016/j.jsv.2025.119244

Guoxu Wang, Yegao Qu, Yapeng Li, Hao Liu, Jiawei Mao

{"title":"Coupling mechanisms of large-deformable beams and nonlinear acoustic waves in unbounded domains of heavy fluids","authors":"Guoxu Wang, Yegao Qu, Yapeng Li, Hao Liu, Jiawei Mao","doi":"10.1016/j.jsv.2025.119244","DOIUrl":"10.1016/j.jsv.2025.119244","url":null,"abstract":"<div><div>The nonlinear vibration and acoustic radiation of large-deformable beams in light fluids have been studied to some extent, but the coupling effects in heavy fluids remain unclear. This paper aims to reveal the coupling mechanisms of large-deformable beams and nonlinear acoustic waves in heavy unbounded fluid domains. A partitioned strongly coupled nonlinear frequency-domain finite element method is established to solve the nonlinear beam and acoustic equations. The modal and harmonic components of beam displacement, acoustic pressure, excitation input energy, beam damping dissipation energy, and acoustic radiation energy are analyzed for elucidating the coupling mechanisms. The results show that, under the same external harmonic excitation conditions, compared to the frequency responses of beam displacement and acoustic pressure in air, those in water shift to lower frequencies, with larger amplitudes and stronger nonlinear effects. Due to the structural cubic geometric nonlinearity and large-amplitude excitation, super-harmonic resonances are observed in the frequency responses of beam displacement and acoustic pressure. Under super-harmonic resonance and low-order primary resonance conditions, the triple-frequency components of most modes account for a significant proportion of their total responses. Under high-order primary resonance conditions, compared to air, the beam vibration in water is more likely to excite low-order modes in the radiated acoustic field. Relatively high acoustic radiation efficiency can be witnessed in the first primary resonance in air and the high-order primary resonance in water. These results will help to understand the differences and connections in the coupling characteristics of vibration and radiated acoustic fields of large-deformable structures in light and heavy fluids.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119244"},"PeriodicalIF":4.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222636","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

Application of self-detecting error technique in the boundary element method for solving exterior acoustic problems 自检误差技术在边界元法求解外声问题中的应用

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-28 DOI: 10.1016/j.jsv.2025.119243

Kue-Hong Chen , Yi-Kui Liu , Jeng-Tzong Chen

{"title":"Application of self-detecting error technique in the boundary element method for solving exterior acoustic problems","authors":"Kue-Hong Chen , Yi-Kui Liu , Jeng-Tzong Chen","doi":"10.1016/j.jsv.2025.119243","DOIUrl":"10.1016/j.jsv.2025.119243","url":null,"abstract":"<div><div>This paper proposes a self-detecting error technique to estimate discretization errors in the boundary element method (BEM) for solving exterior acoustic problems. The proposed technique not only offers the unique capability to quantify the error for each individual element but also provides an accurate estimation of total discretization error across various mesh sizes. This is achieved by utilizing the self-detecting error technique as an error estimator to enable adaptive mesh refinement, which locally adjusts element sizes (h-version). This adaptive mesh scheme achieves higher solution accuracy with fewer boundary elements compared to a uniform mesh distribution. Additionally, this technique is employed to identify fictitious frequencies that lead to a loss of uniqueness in the numerical solution, ensuring the reliability of the numerical solution. This paper presents a numerical investigation to understand how fictitious frequencies are influenced by the chosen approach, either the singular formulation or the hypersingular formulation of the BEM. The interior null field for the complementary domain becomes a nonzero field corresponding to the interior eigenmodes in case of the fictitious frequencies. To validate the proposed technique, a circular case with exact solutions is used as standard benchmark to evaluate the developed self-detecting error technique. Finally, two 2D acoustic problems, one involving radiation and the other involving scattering in a submarine-shaped domain, are presented to evaluate the applicability and effectiveness of the proposed technique.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119243"},"PeriodicalIF":4.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222633","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

A numerical study on sound radiation from circular duct with cold flow 冷流动圆形管道声辐射的数值研究

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-28 DOI: 10.1016/j.jsv.2025.119251

Wang Liwei, Ji Zhenlin

{"title":"A numerical study on sound radiation from circular duct with cold flow","authors":"Wang Liwei, Ji Zhenlin","doi":"10.1016/j.jsv.2025.119251","DOIUrl":"10.1016/j.jsv.2025.119251","url":null,"abstract":"<div><div>The characteristics of sound radiation from the end of duct can be described by the reflection coefficient and end correction, which may be influenced by the flow velocity of medium and the wall thickness of duct. In this study, an approach based on solving the two-dimensional (2-D) axisymmetric frequency domain linearized Navier-Stokes equations (LNSEs) is proposed to determine the reflection coefficient and end correction of circular duct with clod flow. The numerical predictions are compared with theoretical results and published measurements, and good agreements are observed which verifies the accuracy of the present approach. Furthermore, the influences of flow velocity, velocity profile and wall thickness on sound radiation are examined numerically. The results indicate that in the presence of flow, the magnitude of reflection coefficient exceeds unity and the value of end correction at low Helmholtz number ka is much lower than that in the absence of flow. The numerical predictions for artificially constructed infinitely thin shear layer demonstrate that the velocity profile in jet affects the reflection coefficient and lowers the value of end correction. Numerical simulations of circular ducts with varying wall thicknesses and termination geometries reveal that the limit value of end correction as <span><math><mrow><mi>k</mi><mi>a</mi><mo>→</mo><mn>0</mn></mrow></math></span> converges to a common constant, provided the terminations preserve the characteristics of shear layer at the duct lip. Finally, expressions of reflection coefficient and end correction are presented by using the piecewise polynomial fitting method based on the numerical predictions.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119251"},"PeriodicalIF":4.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222634","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 equivalent plate model for assessing the dynamic behavior of highly damped sandwich plates 评估高阻尼夹层板动力特性的等效板模型

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-27 DOI: 10.1016/j.jsv.2025.119209

Rafael da S. Raqueti , Noureddine Atalla , Morvan Ouisse , Emeline Sadoulet-Reboul

{"title":"An equivalent plate model for assessing the dynamic behavior of highly damped sandwich plates","authors":"Rafael da S. Raqueti , Noureddine Atalla , Morvan Ouisse , Emeline Sadoulet-Reboul","doi":"10.1016/j.jsv.2025.119209","DOIUrl":"10.1016/j.jsv.2025.119209","url":null,"abstract":"<div><div>This article presents an equivalent plate modeling approach for assessing the dynamic behavior of highly damped multilayered plates, with a focus on adaptive structures with shape memory polymer core. The mechanical properties of these structures vary with frequency and temperature, and exceptional damping values are obtained near the glass transition temperature of the shape memory polymer. By modeling the system as an equivalent homogeneous and isotropic thin plate, the effective properties are analytically determined by retaining the real parts of the bending, shear (transverse) and extension (quasi-longitudinal) waves. Unlike other equivalent plate models, the damping loss factor is estimated using a power balance formulation accounting for the significance of multiple waves types, improving the description of the dissipation mechanism. The results show good agreement with the damping estimates obtained using the power input method and the full order finite element model of the sandwich plate. For a 4% damping value, the equivalent plate finite element model accurately predicts the vibroacoustic indicators of the adaptive sandwich plate, while significantly reducing the modeling complexity. Even at exceptionally high damping levels (55% and 77%), the equivalent plate model captures the overall dynamic behavior of the structure. This proposed equivalent model offers a practical method for evaluating the vibroacoustic performance of highly damped multilayered plates and can be used to explore various behaviors of adaptive sandwich plates. Its reduced computation time makes it especially suitable for optimization problems, such as determining optimal temperatures for damping and stiffness control.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"616 ","pages":"Article 119209"},"PeriodicalIF":4.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190073","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

Modelling and identification of hysteresis of Vacuum Packed Particles Torsional Damper 真空填充颗粒扭转阻尼器滞回建模与辨识

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-27 DOI: 10.1016/j.jsv.2025.119203

Dominik Rodak, Mateusz Żurawski, Mariusz Pyrz, Robert Zalewski

引用次数: 0

Non-collocated active vibration suppression of both rough-machining and finishing in ram-type milling machine using an electromagnetic actuator 利用电磁作动器抑制冲压式铣床粗加工和精加工非同步主动振动

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-27 DOI: 10.1016/j.jsv.2025.119205

Eun Kyu Kim , Jae Woo Jung , Sang Won Jung , Yoon Sik Kwon , Bo Min Kang , Chang Ho Lee , Kwangseop Sim , Ok Hyun Jo , Jun Young Yoon

{"title":"Non-collocated active vibration suppression of both rough-machining and finishing in ram-type milling machine using an electromagnetic actuator","authors":"Eun Kyu Kim , Jae Woo Jung , Sang Won Jung , Yoon Sik Kwon , Bo Min Kang , Chang Ho Lee , Kwangseop Sim , Ok Hyun Jo , Jun Young Yoon","doi":"10.1016/j.jsv.2025.119205","DOIUrl":"10.1016/j.jsv.2025.119205","url":null,"abstract":"<div><div>This paper presents the non-collocated active damping system (NCADS) applied to a ram-type milling machine for achieving high-throughput machining of both rough- and finishing-milling. When installing an active damping system to practical ram-type milling machines, the available locations are limited due to the space constraints and the interference against machining processes. Therefore, it is often the case that the non-collocated configuration of the active damper becomes inevitable. Such non-collocated active damping system (NCADS) may require high force–density actuators to compensate the poor controllability, and right half-plane zeros caused by the NCADS make it challenging to maximize the active damping performance while securing the controller stability. In addition, the different vibration characteristics during the rough- and finishing-milling require the vibration control strategies adapted to the machining operations. We propose the sensitivity function shaping methods in NCADS for high-throughput operation of both rough- and finishing-milling. Using the proposed method, we increase the dominant-mode dynamic stiffness of the ram structure by 154% for rough-machining operations, and thereby increase the chatter-free cutting depth up to 3.5 mm. Also, in the high-speed finish-milling test, we reduce the retainer vibration by 58% and thereby suppress the associated beating mark on the surface profile, achieving the surface roughness reduction by 40%. The results validates the high-throughput machining performance of the proposed vibration suppression control methods in both rough- and finishing-milling.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"616 ","pages":"Article 119205"},"PeriodicalIF":4.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185433","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

Resonances analysis of a parametrically excited imbalanced asymmetrical rotor with an imbalanced disk exposed to lubricated and electromagnetic loads 含非平衡盘的参数激励非平衡转子在润滑和电磁载荷下的共振分析

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-27 DOI: 10.1016/j.jsv.2025.119240

Majid Shahgholi , Jan Awrejcewicz

{"title":"Resonances analysis of a parametrically excited imbalanced asymmetrical rotor with an imbalanced disk exposed to lubricated and electromagnetic loads","authors":"Majid Shahgholi , Jan Awrejcewicz","doi":"10.1016/j.jsv.2025.119240","DOIUrl":"10.1016/j.jsv.2025.119240","url":null,"abstract":"<div><div>This study investigates the nonlinear dynamics of a parametrically excited, imbalanced asymmetrical rotor-disk system subjected to combined electromagnetic, journal bearing, and eccentricities. The equations of motion are derived using a variational approach and solved with the method of multiple scales to analyze primary, parametric, and combination resonances. The findings reveal that in the absence of electromagnetic excitation, the symmetrical and asymmetrical systems exhibit hardening nonlinearities with negligible backward mode amplitudes. As the electromagnetic parameter increases, softening nonlinearities dominate, activating both forward and backward modes and introducing new solution branches. The importance of defining multiple detuning parameters is underscored, as this enables the capture of forward and backward amplitudes and new solution branches, which are otherwise unattainable. The study further reveals that shaft and disk eccentricities significantly influence system behavior. In the absence of shaft eccentricity, symmetrical systems exhibit simpler dynamics without backward amplitudes, while asymmetrical systems retain their dynamic richness, including stable and unstable solutions, jump phenomena, and new branches rooted in backward modes. The findings highlight that symmetrical systems are more sensitive to shaft eccentricity, while asymmetrical systems, driven by parametric excitations from shaft asymmetry, exhibit resilience to such changes. Additionally, the electromagnetic field's phase plays a crucial role in shaping higher stable solutions, with minimal impact on lower amplitudes. As the electromagnetic parameter increases, the system transitions from harmonic responses to multi-harmonic, quasi-periodic, and chaotic behaviors. These insights provide a comprehensive understanding of rotor dynamics under combined excitations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119240"},"PeriodicalIF":4.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222635","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