国际机械系统动力学学报(英文)最新文献

{"title":"Influence of temperature and internal leakage on magnetorheological damper","authors":"Hongtao Zhu,&nbsp;Xiaoting Rui,&nbsp;FuFeng Yang,&nbsp;Wei Zhu,&nbsp;Min Jiang","doi":"10.1002/msd2.12123","DOIUrl":"10.1002/msd2.12123","url":null,"abstract":"<p>To study the influence of temperature and internal leakage on the performance of magnetorheological (MR) damper, a single-rod straight-cylinder MR damper with an inside temperature sensor is designed in this study. A unified model for MR damper is given, and a new two-step parameters identification method is proposed to determine model parameters. The experiment, in which the damper is heated by long-time displacement excitation, is designed to study the effect of temperature and internal leakage. The influence mechanism of temperature and internal leakage on MR damper is analyzed through theoretical derivation and experimental results in this study.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 4","pages":"487-496"},"PeriodicalIF":3.4,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12123","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141924870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of temperature characteristics of high-speed train wheelset system under complex operating conditions","authors":"Baosen Wang,&nbsp;Yongqiang Liu,&nbsp;Yingying Liao,&nbsp;Yixuan Wang","doi":"10.1002/msd2.12122","DOIUrl":"https://doi.org/10.1002/msd2.12122","url":null,"abstract":"<p>With the rapid advancements in high-speed train technology, the importance of ensuring the safety of train operations has become paramount. Bearings, being a critical component of train bogies, have garnered significant attention for their role in maintaining safety standards. Monitoring the temperature of bearings to evaluate their motion state is a common practice in high-speed trains, emphasizing the need for further research into temperature fluctuations. In this study, a dynamic model is developed for the bearing rotor system of high-speed trains. By considering the contact points between raceways and rolling elements, the power loss in the bearing is obtained and a transient temperature-field model of the system is established. The relationship between node temperature and factors such as ambient temperature, train running speed, and load is illustrated, with a detailed presentation of the influence of bearing fault type and size on node temperature. The analysis results reveal that the node temperature increases with higher values corresponding to those quantifiable factors and is most affected by rolling element fault. Additionally, it is observed that the temperature rises rapidly in the initial stage and gradually flattens out over time. The comparative analysis of temperature under different fault conditions shows that the node temperature is most affected by the rolling element fault. Experiments and actual line temperature data are used to verify the validity of the model. The comparison results show that the simulation aligns well with experimental and line data. The transient temperature-field model of the bearing rotor system in high-speed trains can effectively simulate and predict the temperature change process of each node of the system. The simulation results hold certain theoretical guiding significance for further research and practical applications in ensuring train operation safety.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 3","pages":"331-345"},"PeriodicalIF":3.4,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic characteristics of nonlinear vibration isolator for gas turbine","authors":"Teng Wang,&nbsp;Linhan Feng,&nbsp;Lei Zhang,&nbsp;Chunhui Zhang,&nbsp;Yue Wu","doi":"10.1002/msd2.12121","DOIUrl":"https://doi.org/10.1002/msd2.12121","url":null,"abstract":"<p>In this study, a theoretical model of the vibration isolation system of the gas turbine is developed and numerically solved. A simplified finite element (FE) model was also established to determine the response under the shock load. The results of the FE model are used to verify the effectiveness of the theoretical model and the numerical solution. The influence of isolator stiffness, vibration isolator damping, and vibration isolator nonlinear stiffness coefficient on the shock response of the vibration isolation system is studied using the controlled-variable method. These parameters (stiffness, damping, and nonlinear coefficient) enter into the shock resistance design of gas turbine vibration isolators.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 3","pages":"374-383"},"PeriodicalIF":3.4,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12121","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear response of a multidirectional negative-stiffness isolation system via semirecursive multibody dynamic approach","authors":"Wei Dai,&nbsp;Biagio Carboni,&nbsp;Giuseppe Quaranta,&nbsp;Yongjun Pan,&nbsp;Walter Lacarbonara","doi":"10.1002/msd2.12118","DOIUrl":"10.1002/msd2.12118","url":null,"abstract":"<p>This paper investigates an innovative negative-stiffness device (NSD) that modifies the apparent stiffness of the supported structure for seismic isolation. The NSD comprises a lower base on the bottom and a cap on the top, together with a connecting rod, vertical movable wall, and compressed elastic spring, as well as circumferentially arranged, pretensioned external ropes, and inclined shape memory wires. This configuration can deliver negative stiffness and energy dissipation in any direction within the horizontal plane. A numerical model of the device is developed through a two-step semirecursive method to obtain the force–displacement characteristic relationship. Such a model is first validated through comparison with the results obtained via the commercial software ADAMS. Finally, a large parametric study is performed to assess the role and the influence of each design variable on the overall response of the proposed device. Useful guidelines are drawn from this analysis to guide the system design and optimization.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 3","pages":"258-277"},"PeriodicalIF":3.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Letter of thanks for IJMSD's JCR debut in 2024","authors":"Xiaoting Rui,&nbsp;Marco Amabili,&nbsp;Peter Eberhard,&nbsp;Yonggang Huang","doi":"10.1002/msd2.12119","DOIUrl":"10.1002/msd2.12119","url":null,"abstract":"<p>Dear Readers, Authors, Reviewers, Editorial Board Members, Editorial Office Members,</p><p>We are pleased and honored to inform you that, according to the 2024 Journal Citation Reports (JCR) from Clarivate released on June 20, 2024, the <i>International Journal of Mechanical System Dynamics</i> (<i>IJMSD</i>) <i>received its first Journal Impact Factor of 3.4 (2023)</i>. <i>IJMSD</i> ranks 42nd out of 180 journals in the Engineering, Mechanical category (<i>Q1, top 23.1%</i>), and 39th out of 170 journals in the Mechanics category (<i>Q1, top 22.6%</i>).</p><p>On behalf of the <i>IJMSD</i> Editorial Board, we would like to express our sincere gratitude to all authors, Editorial Board Members, peer reviewers, publisher Wiley, Editorial Office Members, and entire mechanical-engineering research community for their support and contributions to <i>IJMSD</i>.</p><p>Since publishing the inaugural issue in November 2021, more than 2 years ago, <i>IJMSD</i> has received several other recognitions that include the following: it was selected for the High Starting Point New Journal Project of Excellence Action Plan for China Scientific, Technical, and Medical (STM) Journals in the founding year; indexed by Scopus in 2022, as well as by ESCI and Ei Compendex in 2023; selected in the first batch for the High Starting Point New Journal Project of Excellence Action Plan for STM Journals in Jiangsu Province in 2024; and included in JCR Q1 for both Engineering, Mechanical, and Mechanics categories.</p><p>With the continued support from our research community, we hope that <i>IJMSD</i> will serve as a platform for the dissemination of new analytical and numerical results, for publishing high-quality and original research contributions, and for the promotion of the field of mechanical system dynamics.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 3","pages":"257"},"PeriodicalIF":3.4,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141654210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An intelligent impulsive noise mitigation with deep learning method","authors":"Guo Yang,&nbsp;Yuwen Qian,&nbsp;Zikun Wang,&nbsp;Xiangwei Zhou,&nbsp;Wen Wu","doi":"10.1002/msd2.12117","DOIUrl":"10.1002/msd2.12117","url":null,"abstract":"<p>To enable message transmission among sensors and equipment, power line communication (PLC) is a widely adopted smart grid. However, due to the occurrence of impulsive noise (IN), reliable transmissions over PLC channels in the smart grid are challenging. Therefore, in this paper, we propose an adaptive noise mitigation scheme to clip the IN with the sliding window-based method, where the altitude of the received signal in the current time slots is obtained by computing the average altitude of signals in the previous and next time slots. To detect the states of IN and dynamically estimate the power threshold of signals for the IN mitigation scheme, we develop an intelligent algorithm based on the long short-term memory network. To prevent the useful signals from being eliminated as IN signals, we propose the accelerated proximal gradient method (APGM) based on tone reservation to reduce the peak-to-average power ratio (PAPR) for the transmitting signals with low computational complexity. In addition, the closed-form expression of the bit error rate (BER) is derived for the proposed sliding window-based IN mitigation scheme according to the probability density function of the IN. Simulation results demonstrate that the proposed IN mitigation scheme achieves a better BER performance than the conventional IN mitigation schemes. In addition, the APGM aided by IN mitigation can further improve BER performance due to the PAPR reduction.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 3","pages":"346-360"},"PeriodicalIF":3.4,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12117","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141665639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cover Image, Volume 4, Number 2, June 2024","authors":"","doi":"10.1002/msd2.12120","DOIUrl":"https://doi.org/10.1002/msd2.12120","url":null,"abstract":"<p><b>Cover Caption</b>: A velocity-based space–time finite element method (v-ST/FEM) is presented for analyzing dynamic soil–structure interaction in earth structures such as dams, tunnels, and embankments subjected to vibrational loading from high-speed trains, road traffic, underground explosions, and earthquakes. The method incorporates the Lysmer–Kuhlemeyer viscous boundary conditions to truncate the unbounded soil domain and includes time-dependent boundary conditions to model energy flow. The v-ST/FEM is third-order accurate in time. It introduces negligible numerical dispersion error, thus enabling precise computation of the dynamic responses of soils and structures during long-duration earthquake motions.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 2","pages":"i"},"PeriodicalIF":3.4,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12120","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141556607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Weak signal extraction of micro-motor rotor unbalance based on all-phase fast Fourier transform","authors":"Qinghua Liu,&nbsp;Xingxing Xu,&nbsp;Zhenrong Lu,&nbsp;Liwei Yu,&nbsp;Dong Jiang","doi":"10.1002/msd2.12116","DOIUrl":"https://doi.org/10.1002/msd2.12116","url":null,"abstract":"<p>To improve the dynamic balancing accuracy of the micro-motor rotor, an unbalanced vibration feature extraction based on an all-phase fast Fourier transform (APFFT) method is proposed. The amplitude and phase of the signal are extracted by spectrum analysis after windowing the unbalanced signal. The mathematical model is derived to simulate the weak signal of rotor unbalance. The simulation results show that this method is accurate in extracting the weak signal of the rotor under different noise levels. The micro-motor rotor unbalanced test system is developed for experimental validations. The accuracy and stability of the vibration amplitude and phase extracted by the APFFT are better than the accuracy and stability from the hardware filtering method. The rotor unbalance is reduced by more than 80%. Furthermore, secondary balance of the rotor after the first balance is carried out. The proposed method can still extract the residual unbalance of the rotor. The results demonstrated that the proposed method can achieve a reduction rate of 90% and the accuracy is within 5 mg, verifying the effectiveness of the proposed method for high-precision rotor dynamic balance.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 2","pages":"202-212"},"PeriodicalIF":3.4,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141556705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A dual-mode integration framework and application to agile feedback design of launch vehicles","authors":"Wenfeng Zhang,&nbsp;Xiaoshuang Cai,&nbsp;Zhendong Liu,&nbsp;Shan Luo,&nbsp;Rendong Yu","doi":"10.1002/msd2.12110","DOIUrl":"https://doi.org/10.1002/msd2.12110","url":null,"abstract":"<p>In recent decades, the design of complex systems like launch vehicles in the aerospace industry has presented engineers with challenges that go beyond system complexity. Issues such as time-to-market pressures and intricate industrial processes have underscored the increasing significance of agile design methodologies. Agile design is derived from the simplification of the design process and enhancing cross-domain data transmission and feedback. While methods based on model-based system engineering have improved iteration times in system architecture design, challenges persist in cross-domain data transmission. Due to the diversity of complex system models and data, a single-mode integration method is difficult to realize the data link construction of all tools used. To address this challenge, this paper proposes a dual-mode data integration framework with expansibility, universality, and cost-efficiency which leverages the benefits of Remote Procedure Call and Intermediate Exchange Module, addressing the challenge of constructing cross-domain data links under single-mode integration. In this study, two critical requirements of the first- and second-stage separation systems, namely, weight and minimum separation gap, are selected for data feedback. A Modelica-based multiphysics simulation model is developed in MWorks; visualization and computation of the minimum gap are carried out in CoppeliaSim. To bridge the gap between domain-specific tools, Matlab and Functional Mock-up Unit modules are introduced as middleware, facilitating data feedback linkage. The entire simulation process is orchestrated using activity diagrams in the MagicDraw tool. The study delves into the influence of critical design parameters, such as the initial angular velocity of separation and the thrust of the retro rocket, on the minimum separation gap. It provides an analysis of minimum separation gap variations under uncertain operating conditions and examines design margins. Significantly, the paper highlights the significance of controlling the initial angular velocity during separation and the reliability of the retro rocket, providing essential decision supports and valuable insights to agile the process of system design.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 2","pages":"226-239"},"PeriodicalIF":3.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141556544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-magnet-ring quasi-zero stiffness isolator for low-frequency vibration isolation","authors":"Shang Wang,&nbsp;Lei Hou,&nbsp;Qingye Meng,&nbsp;Gengshuo Cui,&nbsp;Xiaodong Wang","doi":"10.1002/msd2.12107","DOIUrl":"10.1002/msd2.12107","url":null,"abstract":"<p>A three-magnet-ring quasi-zero stiffness (QZS-TMR) isolator is designed to solve the problem of low-frequency vibration isolation in the vertical direction of precision equipment. QZS-TMR has both positive and negative stiffness structures. The positive stiffness structure consists of two mutually repelling magnetic rings and the negative stiffness structure consists of two magnetic rings nested within each other. By modulating the relative distance between positive and negative stiffness structures, the isolator can have QZS characteristics. Compared with other QZS isolators, the QZS-TMR is compact and easy to manufacture. In addition, the working load of QZS-TMR can be flexibly adjusted by varying the radial widths of the inner magnetic ring. In this paper, the static analysis of QZS-TMR is carried out to guide the design, and the low-frequency vibration isolation performance is studied. In addition, the experimental prototype of QZS-TMR is designed and manufactured. The static and vibration isolation experiments are carried out on the prototype. The results show that the initial vibration isolation frequency of the experimental prototype is about 4 Hz. The results show an excellent low-frequency vibration isolation effect, which is consistent with the theoretical research. This paper introduces a new approach to the design of the QZS isolator.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 2","pages":"153-170"},"PeriodicalIF":3.4,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12107","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141372477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}