Journal of Vibration and Control最新文献_第7页

Nonlocal elasticity theory for radial vibration of composite nanoscale spherical shells via wave approach 通过波方法研究复合纳米级球壳径向振动的非局部弹性理论

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-17 DOI: 10.1177/10775463241273003

Wei Liu, Xiandong Wang

{"title":"Nonlocal elasticity theory for radial vibration of composite nanoscale spherical shells via wave approach","authors":"Wei Liu, Xiandong Wang","doi":"10.1177/10775463241273003","DOIUrl":"https://doi.org/10.1177/10775463241273003","url":null,"abstract":"In this work, the wave approach is combined with nonlocal elasticity theory to address the problems of mechanics of composite nanoscale spherical shells. To the authors’ knowledge, many published literature primarily concentrate on investigating the nonlocal frequencies of nanoscale spherical shells by utilizing conventional method. Currently, no such work has been carried out on the nanoscale spherical shells from wave standpoint, particularly for the laminated nanocomposites. In this work, the characteristic determinant corresponding to composite laminated nanoscale spherical shells is formulated mathematically by incorporating general solution and transfer matrix into the conventional method. Based on wave propagation, the propagation, reflection, and coordination matrices are derived and assembled to capture the nonlocal frequencies. With respect to the composite laminated nanoscale spherical shells, the nonlocal frequencies predicted by wave approach are compared with the conventional solutions to demonstrate the validity of the proposed wave approach. Additionally, the accuracy and validity of the present method for single nanoscale spherical shells are simultaneously confirmed and examined by the available published data. Finally, the illustrative parametric studies are further scrutinized to exhibit the mechanical properties of spherically composite nanostructures.","PeriodicalId":17511,"journal":{"name":"Journal of Vibration and Control","volume":"22 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dynamic response analysis of composite clearance fault in reciprocating compressor transmission mechanism 往复式压缩机传动机构中复合间隙故障的动态响应分析

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-16 DOI: 10.1177/10775463241273016

Na Lei, Han Ding, Youfu Tang, Peichen Jiang

{"title":"Dynamic response analysis of composite clearance fault in reciprocating compressor transmission mechanism","authors":"Na Lei, Han Ding, Youfu Tang, Peichen Jiang","doi":"10.1177/10775463241273016","DOIUrl":"https://doi.org/10.1177/10775463241273016","url":null,"abstract":"The traditional Hertz contact model has the problem of mismatch in the scope of application when analyzing reciprocating compressor clearance faults. Therefore, a modified conformal contact force model is proposed in this paper, based on the L–N contact force model, and the modified stiffness coefficient Kc and the modified stiffness index nc are introduced to obtain the modified conformal contact force model. The validity of the modified conformal contact force model was verified by developing simulation model and theory dynamics equations. Based on the simulation model, the effects of different clearance values, different clearance fault locations, and different operating conditions on the dynamic response were investigated. The accuracy of the simulation model was verified by performing fault tests on reciprocating compressors. The simulation results show that, as the number of bearing clearance faults increases, the acceleration of crosshead vibration decreases, and the addition of slide clearance faults increases the acceleration of crosshead vibration; as the friction force and rotational speed increase, the amplitude and frequency of cross head vibration impact under composite clearance faults will be further intensified. For the study of clearance faults in the same type of mechanism, the work done in this paper can be a reference.","PeriodicalId":17511,"journal":{"name":"Journal of Vibration and Control","volume":"252 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 novel approach of fault diagnosis for gearbox based on VMD optimized by SSA and improved RCMDE 基于 SSA 优化的 VMD 和改进的 RCMDE 的齿轮箱故障诊断新方法

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-16 DOI: 10.1177/10775463241272983

Jiahao Cao, Xiaodong Zhang, Hongwei Wang, Runsheng Yin

{"title":"A novel approach of fault diagnosis for gearbox based on VMD optimized by SSA and improved RCMDE","authors":"Jiahao Cao, Xiaodong Zhang, Hongwei Wang, Runsheng Yin","doi":"10.1177/10775463241272983","DOIUrl":"https://doi.org/10.1177/10775463241272983","url":null,"abstract":"Gearboxes play a vital role in the power transmission of mechanical equipment, and studying fault diagnosis methods is essential to ensure the normal operation of rotating machines. Since the vibration signal of the gearbox has unstable characteristics with strong background noise, a novel approach of fault diagnosis for wind turbine gearbox based on variational mode decomposition (VMD) optimized by sparrow search algorithm (SSA) and improved refined composite multi-scale dispersion entropy (IRCMDE) is proposed in this paper. Firstly, for reducing background noise, sample signals are decomposed by the model of SSA-VMD, and the denoised signals are recomposed according to the correlation coefficient. Then, the proposed IRCMDE under a certain scale factor is calculated to extract initial feature information of the recomposed signal. In the next step, the initial features are reduced to 3 dimensions by the algorithm of the Gaussian process latent variable model (GPLVM). Finally, a support vector machine (SVM) is used to diagnose the different states of gearbox faults. Experimental and comparative experimental results from the wind turbine drivetrain diagnostics simulator (WTDDS) show that the proposed method can quickly and accurately identify the fault of gear transmission.","PeriodicalId":17511,"journal":{"name":"Journal of Vibration and Control","volume":"83 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Design of active vibration isolation controller for pointing stabilization mechanism based on feedforward–feedback hybrid control 基于前馈-反馈混合控制的指向稳定机构主动隔振控制器设计

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-14 DOI: 10.1177/10775463241271843

Anpeng Xu, Zhenbang Xu, Hui Zhang, Shuai He, Lintao Wang

引用次数: 0

Bicycle disc brake noise analysis and mitigation 自行车盘式制动器噪音分析与缓解

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-14 DOI: 10.1177/10775463241273021

Ajaypal Singh, Hans Vreman, Andrew E Dressel, Jason K Moore

引用次数: 0

Re-designing strategy to enable a sub-system to function as a dynamic vibration absorber 重新设计战略，使子系统发挥动态减震器的功能

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-08 DOI: 10.1177/10775463241272924

Masami Matsubara, Kohei Takahashi, Kohei Furuya, Akira Saito, Shozo Kawamura

{"title":"Re-designing strategy to enable a sub-system to function as a dynamic vibration absorber","authors":"Masami Matsubara, Kohei Takahashi, Kohei Furuya, Akira Saito, Shozo Kawamura","doi":"10.1177/10775463241272924","DOIUrl":"https://doi.org/10.1177/10775463241272924","url":null,"abstract":"In the design of a typical dynamic absorber, the components corresponding to the dynamic vibration absorber (DVA) should be reduced to a lumped constant system model comprising a mass, spring, and damper. The equivalent mass and stiffness must be determined and linked to design coefficients. However, no studies on the dynamic design of a main structure (main system) and an attached DVA (sub-system) based on an FE model without constructing a reduced-order equivalent model with a few DOFs have been conducted. This study proposes a new method of extracting and simplifying the design of a sub-system to function as a DVA using the state of a finite element (FE) model. We established the relationship between the condition of the sub-system functioning as a DVA and the modal parameter of the entire system. According to a survey, the modal kinetic energies, which were calculated from the partial mass matrix and mode vectors, of the main system and sub-system are approximately equal. We used this relationship to redesign the sub-system. As the modal kinetic energy was used as a design index, the FE model could be redesigned without constructing an equivalent lumped parameter model consisting of two or three degrees of freedom (DOFs) as in the conventional DVA design. We demonstrated the relationship between the modal kinetic energies of the main system and sub-system when it functions as a DVA for a 2-DOF lumped mass model and discussed how to distinguish the sub-system from the entire system (multi-DOF system). Considerable improvement was found in re-designing at FE model, validating the proposed method. The proposed method can be used to redesign components that behave similarly to dynamic absorbers to effectively reduce vibration from the results of FE analysis, without modeling the system as a lumped constant system.","PeriodicalId":17511,"journal":{"name":"Journal of Vibration and Control","volume":"47 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Prediction of remaining useful life for rolling bearing based on ISOMAP and multi-head self-attention with gated recurrent unit 基于 ISOMAP 和带有门控循环单元的多头自我关注，预测滚动轴承的剩余使用寿命

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-06 DOI: 10.1177/10775463241254252

Qiwu Zhao, Xiaoli Zhang

{"title":"Prediction of remaining useful life for rolling bearing based on ISOMAP and multi-head self-attention with gated recurrent unit","authors":"Qiwu Zhao, Xiaoli Zhang","doi":"10.1177/10775463241254252","DOIUrl":"https://doi.org/10.1177/10775463241254252","url":null,"abstract":"The remaining useful life of rolling element bearing affects the reliability and stability of the machine. Accurately predicting the remaining useful life of rolling element bearings is always necessary to make maintenance decisions in practical engineering. However, the remaining useful life prediction methods using traditional machine learning are incompetent for the task of training without labels, which consumes computational cost, financial resources, and labor. Therefore, a gated recurrent unit model based on feature dimensionality reduction and the multi-head self-attention mechanism (MHGRU) is established, and a homology algorithm is proposed to train the model and make the prediction. The isometric feature mapping algorithm and a homology algorithm are used in the model training, which incorporates the advantages of appreciable computational efficiency and preservation of automatic labeling for training in engineering. First, 24 basic features are extracted from the life-cycle vibration signals of rolling element bearings to reconstruct fusion features by the isometric feature mapping algorithm, which aims to reduce the feature dimension and improve computational efficiency. Since the multi-head self-attention mechanism in the MHGRU has the ability to comprehensively highlight the attention coefficient for long-term fusion features at different moments, it gives the gated recurrent unit considerable performance in reducing the computational complexity of extremely long time series and improving the accuracy of prediction results. In addition, two open-source IEEE PHM Challenge and XJTU-SY bearing datasets sampled by the sensor are adopted to assess the prediction performance of the MHGRU with homology algorithm. Finally, some existing remaining useful life prediction approaches of rolling element bearings are used for comparison. The experimental results show that MHGRU is suitable for the remaining useful life prediction of rolling element bearings and is superior to other models.","PeriodicalId":17511,"journal":{"name":"Journal of Vibration and Control","volume":"40 2 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Classification-based estimation of commutation instants for sensor fault-tolerant control in switched systems 基于分类的换向瞬时估计，用于开关系统中的传感器容错控制

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-08-02 DOI: 10.1177/10775463241267037

Salwa Yahia, Saida Bedoui, Kamel Abderrahim

引用次数: 0

Effect of conversion time on the stability of mixed-flow pump in rotating speed conversion 转换时间对转速转换中混流泵稳定性的影响

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-07-30 DOI: 10.1177/10775463241267337

Yifan Xuan, Guojun Zhu, Xingqi Luo, Zhenbo Tang, Yang Wang

{"title":"Effect of conversion time on the stability of mixed-flow pump in rotating speed conversion","authors":"Yifan Xuan, Guojun Zhu, Xingqi Luo, Zhenbo Tang, Yang Wang","doi":"10.1177/10775463241267337","DOIUrl":"https://doi.org/10.1177/10775463241267337","url":null,"abstract":"The rotating speed conversion strategy has a significant impact on the stability of the variable speed operation of the mixed flow pump. Taking a mixed-flow pump as the research object, this paper collects the shaft vibration, pressure pulsation, and external characteristic parameters under different conversion times based on the synchronous acquisition system, and analyzes the influence of conversion time on these parameters. Finally, based on the improved TOPSIS evaluation method, the influence of different conversion time on the stability of the mixed-flow pump is evaluated. The results indicate that the conversion time is positively correlated with the amplitude of shaft vibration and pressure pulsation in the pump during the transition of rotating speed reduction. The local rubbing of the shaft can induce the vibration component corresponding to the high harmonics frequencies such as 2 f n, 3 f n, and 4 f n. The high correlation frequency band of the impeller outlet pressure pulsation and shaft vibration is located between 64 Hz and 120 Hz. And this frequency band is not affected by the conversion time. According to the TOPSIS evaluation results, in the transition process of speed reduction, the longer the rotating speed conversion time, the worse the stability of the mixed-flow pump during the conversion process.","PeriodicalId":17511,"journal":{"name":"Journal of Vibration and Control","volume":"44 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141864813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Synchronization of heterogeneous discrete-time fractional-order quaternion-valued neural networks with time delay and parameter uncertainty using the impulsive method 使用脉冲法同步具有时间延迟和参数不确定性的异构离散时间分数阶四元数神经网络

IF 2.8 3区工程技术

Journal of Vibration and Control Pub Date : 2024-07-29 DOI: 10.1177/10775463241264869

Xingpeng Zhang, Yuru Li, Peng Guo, Meilin Gao

引用次数: 0