国际机械系统动力学学报(英文)最新文献_第6页

Virtual vibration test rig for fatigue analysis of dozer push arms 用于推土机推臂疲劳分析的虚拟振动试验台

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-08-31 DOI: 10.1002/msd2.12125

Lei Hou, Weibin Li, Wenyan Gu, Zizheng Sun, Xiangqian Zhu, Jin-Hwan Choi

{"title":"Virtual vibration test rig for fatigue analysis of dozer push arms","authors":"Lei Hou, Weibin Li, Wenyan Gu, Zizheng Sun, Xiangqian Zhu, Jin-Hwan Choi","doi":"10.1002/msd2.12125","DOIUrl":"https://doi.org/10.1002/msd2.12125","url":null,"abstract":"To obtain accurate fatigue life results for construction machinery components, acquiring load spectra is crucial, as their authenticity and validity directly determine the precision of the analysis. In working conditions, component attitudes change continuously, but they remain static on the vibration test rig (VTR), so the acquired target signals should match with the actual component attitudes in the driving signal generation. This paper proposes an efficient and economical simulation-based virtual VTR for fatigue analysis of dozers. First, the relationship between the push arm rotation angle and the cylinder stroke is established, since the cylinder strokes can be measured easily in data acquisition experiments. Second, load decomposition is used to determine the attitude relationship between virtual VTR conditions and actual conditions, and target signals are calculated based on this attitude relationship and measured data. According to the system's frequency response function, the driving signals are iterated until the system's response signals converge with the target signals. Finally, the iteratively obtained load spectra are utilized for fatigue life analysis. The results show that the virtual VTR can effectively and accurately obtain the results of fatigue analysis and has engineering application significance.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 3","pages":"278-291"},"PeriodicalIF":3.4,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12125","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359806","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}

引用次数: 0

Machine learning and numerical investigation on drag coefficient of arbitrary polygonal particles 任意多边形颗粒阻力系数的机器学习和数值研究

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-08-27 DOI: 10.1002/msd2.12124

Haonan Xiang, Cheng Cheng, Pei Zhang, Genghui Jiang

{"title":"Machine learning and numerical investigation on drag coefficient of arbitrary polygonal particles","authors":"Haonan Xiang, Cheng Cheng, Pei Zhang, Genghui Jiang","doi":"10.1002/msd2.12124","DOIUrl":"https://doi.org/10.1002/msd2.12124","url":null,"abstract":"The drag coefficient, as the most important parameter that characterizes particle dynamics in flows, has been the focus of a large number of investigations. Although good predictability is achieved for simple shapes, it is still challenging to accurately predict drag coefficient of complex-shaped particles even under moderate Reynolds number (Re). The problem is that the small-scale shape details of particles can still have considerable impact on the drag coefficient, but these geometrical details cannot be described by single shape factor. To address this challenge, we leverage modern deep-learning method's ability for pattern recognition, take multiple shape factors as input to better characterize particle-shape details, and use the drag coefficient as output. To obtain a high-precision data set, the discrete element method coupled with an improved velocity interpolation scheme of the lattice Boltzmann method is used to simulate and analyze the sedimentation dynamics of polygonal particles. Four different machine-learning models for predicting the drag coefficient are developed and compared. The results show that our model can well predict the drag coefficient with an average error of less than 5% for particles. These findings suggest that data-driven models can be an attractive option for the drag-coefficient prediction for particles with complex shapes.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 3","pages":"317-330"},"PeriodicalIF":3.4,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12124","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359860","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}

引用次数: 0

Influence of temperature and internal leakage on magnetorheological damper 温度和内部泄漏对磁流变阻尼器的影响

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-08-09 DOI: 10.1002/msd2.12123

Hongtao Zhu, Xiaoting Rui, FuFeng Yang, Wei Zhu, Min Jiang

引用次数: 0

Analysis of temperature characteristics of high-speed train wheelset system under complex operating conditions 复杂运行条件下高速列车轮对系统的温度特性分析

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-08-06 DOI: 10.1002/msd2.12122

Baosen Wang, Yongqiang Liu, Yingying Liao, Yixuan Wang

{"title":"Analysis of temperature characteristics of high-speed train wheelset system under complex operating conditions","authors":"Baosen Wang, Yongqiang Liu, Yingying Liao, Yixuan Wang","doi":"10.1002/msd2.12122","DOIUrl":"https://doi.org/10.1002/msd2.12122","url":null,"abstract":"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.","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}

引用次数: 0

Dynamic characteristics of nonlinear vibration isolator for gas turbine 燃气轮机非线性隔振器的动态特性

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-08-05 DOI: 10.1002/msd2.12121

Teng Wang, Linhan Feng, Lei Zhang, Chunhui Zhang, Yue Wu

引用次数: 0

Nonlinear response of a multidirectional negative-stiffness isolation system via semirecursive multibody dynamic approach 通过半递归多体动力学方法实现多向负刚度隔离系统的非线性响应

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-07-17 DOI: 10.1002/msd2.12118

Wei Dai, Biagio Carboni, Giuseppe Quaranta, Yongjun Pan, Walter Lacarbonara

{"title":"Nonlinear response of a multidirectional negative-stiffness isolation system via semirecursive multibody dynamic approach","authors":"Wei Dai, Biagio Carboni, Giuseppe Quaranta, Yongjun Pan, Walter Lacarbonara","doi":"10.1002/msd2.12118","DOIUrl":"10.1002/msd2.12118","url":null,"abstract":"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.","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}

引用次数: 0

Letter of thanks for IJMSD's JCR debut in 2024 为 IJMSD 在 2024 年的 JCR 首次亮相而写的感谢信

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-07-12 DOI: 10.1002/msd2.12119

Xiaoting Rui, Marco Amabili, Peter Eberhard, Yonggang Huang

{"title":"Letter of thanks for IJMSD's JCR debut in 2024","authors":"Xiaoting Rui, Marco Amabili, Peter Eberhard, Yonggang Huang","doi":"10.1002/msd2.12119","DOIUrl":"10.1002/msd2.12119","url":null,"abstract":"Dear Readers, Authors, Reviewers, Editorial Board Members, Editorial Office Members,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 International Journal of Mechanical System Dynamics (IJMSD) received its first Journal Impact Factor of 3.4 (2023). IJMSD ranks 42nd out of 180 journals in the Engineering, Mechanical category (Q1, top 23.1%), and 39th out of 170 journals in the Mechanics category (Q1, top 22.6%).On behalf of the IJMSD 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 IJMSD.Since publishing the inaugural issue in November 2021, more than 2 years ago, IJMSD 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.With the continued support from our research community, we hope that IJMSD 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.","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}

引用次数: 0

An intelligent impulsive noise mitigation with deep learning method 用深度学习方法缓解智能脉冲噪声

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-07-09 DOI: 10.1002/msd2.12117

Guo Yang, Yuwen Qian, Zikun Wang, Xiangwei Zhou, Wen Wu

{"title":"An intelligent impulsive noise mitigation with deep learning method","authors":"Guo Yang, Yuwen Qian, Zikun Wang, Xiangwei Zhou, Wen Wu","doi":"10.1002/msd2.12117","DOIUrl":"10.1002/msd2.12117","url":null,"abstract":"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.","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}

引用次数: 0

Cover Image, Volume 4, Number 2, June 2024 封面图片，第 4 卷第 2 号，2024 年 6 月

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-07-03 DOI: 10.1002/msd2.12120

引用次数: 0

Weak signal extraction of micro-motor rotor unbalance based on all-phase fast Fourier transform 基于全相快速傅立叶变换的微电机转子不平衡弱信号提取技术

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-06-20 DOI: 10.1002/msd2.12116

Qinghua Liu, Xingxing Xu, Zhenrong Lu, Liwei Yu, Dong Jiang

{"title":"Weak signal extraction of micro-motor rotor unbalance based on all-phase fast Fourier transform","authors":"Qinghua Liu, Xingxing Xu, Zhenrong Lu, Liwei Yu, Dong Jiang","doi":"10.1002/msd2.12116","DOIUrl":"https://doi.org/10.1002/msd2.12116","url":null,"abstract":"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.","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}

引用次数: 0