Noise & Vibration Worldwide最新文献_第2页

Comparison of non-linear vibration of outer race defective ball bearing using two defect functions 使用两种缺陷函数对外圈缺陷球轴承的非线性振动进行比较

Noise & Vibration Worldwide Pub Date : 2024-03-28 DOI: 10.1177/09574565241243391

Prashant H Jain, S. Bhosle, Ashok J Keche, R. Desavale

{"title":"Comparison of non-linear vibration of outer race defective ball bearing using two defect functions","authors":"Prashant H Jain, S. Bhosle, Ashok J Keche, R. Desavale","doi":"10.1177/09574565241243391","DOIUrl":"https://doi.org/10.1177/09574565241243391","url":null,"abstract":"The aim of this article is to study the effects of evolution in defect size on vibration of a ball bearing by simulation of a ball bearing by developing a 2-DOF mathematical model and to compare the vibration responses of defective bearings obtained for two widely used defect functions, viz., rectangular function and half-sine wave function. MATLAB codes are developed to prepare a mathematical model of a ball bearing and to solve the differential equations of the model using the Runge-Kutta method. In the model, the mass supported by the bearing is considered as a lumped mass, and the contact between the races and the balls is considered as a series of springs, whose spring stiffness is obtained by using Hertz’s contact deformation theory. This model considers the contact deformation between the balls and the races and the additional displacement between the balls and the inner race due to radial clearance and defect geometry. The maximum possible radial displacement of the ball into the defect is obtained analytically and graphically from the race-ball-defect geometry. First, the impulses generated due to an outer race defect in the ball bearing are modeled using two different defect functions separately and their vibration responses are compared. Secondly, the effects of increase in defect length on vibration of the bearing are simulated separately for two defect functions, and then their responses are compared and analyzed. The results show that when the defect is modeled with a rectangular defect function, the vibration responses obtained are greater than when the defect is modeled with a half-sine wave defect function. And, vibration responses increase rapidly up to a certain level of defect length and then decrease with a further increase in defect length. The vibration analysis performed for different defect lengths can provide good support to vibration analysts and researchers.","PeriodicalId":508830,"journal":{"name":"Noise & Vibration Worldwide","volume":"37 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140372443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experiment and optimum of the asphalt paver’s parameters to ameliorate the working performance 试验和优化沥青摊铺机参数以改善工作性能

Noise & Vibration Worldwide Pub Date : 2024-03-27 DOI: 10.1177/09574565241243393

Yundong Mei, Qian Li, Jianwei Li

{"title":"Experiment and optimum of the asphalt paver’s parameters to ameliorate the working performance","authors":"Yundong Mei, Qian Li, Jianwei Li","doi":"10.1177/09574565241243393","DOIUrl":"https://doi.org/10.1177/09574565241243393","url":null,"abstract":"In this paper, the experimental study of the asphalt paver is performed to assess the effect of the vibrational screed system’s operating parameters on the asphalt paver’s working performance. Then, the nonlinear dynamic models of the vibrational screed system and tamper system are built to assess in detail the effect of the working parameters of the vibrational screed system and optimise its working parameters to ameliorate the asphalt paver’s working performance. Both the vertical acceleration and angular acceleration of the vibrational screed system computed via their Root Mean Square ( RMS a) value have been selected as the evaluation indexes. Results showed that the acceleration at the measured points has been unevenly distributed on the vibrational screed system’s length, thus, the working performance of the asphalt paver is quite low. With the vibrational screed system’s working parameters optimised, the average value of RMS a with optimisation is increased by 7.67% whereas the average deviation of RMS a between the measurement points with optimisation is greatly reduced by 34.2% in comparison without optimisation. Consequently, the working performance of the asphalt paver has obviously ameliorated.","PeriodicalId":508830,"journal":{"name":"Noise & Vibration Worldwide","volume":"32 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140373814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-dimensional vibration isolating properties of a 3-RPS parallel damping seat 3-RPS 平行阻尼座椅的多维隔振性能

Noise & Vibration Worldwide Pub Date : 2024-03-27 DOI: 10.1177/09574565241243396

Bijuan Yan, Hao Dong, Haiqing Zhang, Jun Wang, Shuwei Fan

{"title":"Multi-dimensional vibration isolating properties of a 3-RPS parallel damping seat","authors":"Bijuan Yan, Hao Dong, Haiqing Zhang, Jun Wang, Shuwei Fan","doi":"10.1177/09574565241243396","DOIUrl":"https://doi.org/10.1177/09574565241243396","url":null,"abstract":"This paper proposes a new control scheme that is composed by the sliding mode control(SMC) with three-dimensional ceiling control to reduce the multi-dimensional vibration of the vehicle’s seat. The seat suspension system is made of a kind of 3-RPS parallel mechanism, in which each limb is mainly composed by the spherical pair, spring, piston rod, damping fluid and rotary pair. Based on the single-open-chain theory, Position and Orientation Characteristics (POC) set of a 3-RPS seat mechanism was analyzed to verify its movement law. Three-dimensional seat system mathematical model was established, and the SMC and ceiling control were combined to obtain the required force. The ceiling control belongs to an ideal control method, it could provide the reference for the SMC. The comparisons between the SMC and passive seat suspension system were done when the vehicles were walking or working on E, F and G-roads. The results show that the transient amplitudes of seat acceleration outputs were reduced with the proposed control scheme. The research in this work can be extended and applied for other vehicles and improve their performance.","PeriodicalId":508830,"journal":{"name":"Noise & Vibration Worldwide","volume":"3 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Requirements for vibroacoustic methods of the quality assessment of vehicles traction electric motors 车辆牵引电机质量评估振动声学方法的要求

Noise & Vibration Worldwide Pub Date : 2024-03-27 DOI: 10.1177/09574565241243390

V. Migal, S. Arhun, A. Hnatov, Olha Ulianets, Igor Shevchenko

{"title":"Requirements for vibroacoustic methods of the quality assessment of vehicles traction electric motors","authors":"V. Migal, S. Arhun, A. Hnatov, Olha Ulianets, Igor Shevchenko","doi":"10.1177/09574565241243390","DOIUrl":"https://doi.org/10.1177/09574565241243390","url":null,"abstract":"The progression and refinement of traction electric motors play a pivotal role in the enhancement of vehicles. With constant advancements in power efficiency, diagnostic tools, and reliability, electric traction motors are becoming more economical in terms of operational costs. This article underscores the significance of methods used in assessing the technical proficiency of traction electric motors, coupled with their testing techniques. The vibration characteristics of these motors serve as a prime criterion in assessing their quality throughout their lifecycle – from design and manufacturing to operation. A groundbreaking proposition made in this article is the evaluation of electric traction motors’ health based on their vibration acceleration within an expansive frequency range of 5 Hz to 10 kHz. This contrasts the conventional approach which focuses on vibration speed in a restricted frequency spectrum up to 1000 Hz, as outlined by current standards. Such permissible vibration classes are essential in ensuring the high-quality design, technical finesse, and dependability of traction electric motors. Exceeding these vibration thresholds can result in rapid wear and tear, diminishing the motor’s reliability and lifespan. Hence, motors that surpass these permissible vibrations are not advised for vehicular use. Additionally, the article sheds light on requisite equipment controls for accurately gauging vibrations and noise levels in electric motors. Delving deeper into the nuances, the methods for mounting vibration transducers and electric motors on testing platforms are elucidated. These methods are pivotal in obliterating any hindrances that could impede the precise measurement of vibrations induced by an electric motor.","PeriodicalId":508830,"journal":{"name":"Noise & Vibration Worldwide","volume":"39 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing and analyzing the efficiency of seat’s three vibration isolator modes in improving the driver’s comfort 设计并分析座椅的三种隔振模式在提高驾驶员舒适度方面的效率

Noise & Vibration Worldwide Pub Date : 2024-03-26 DOI: 10.1177/09574565241243392

Xiangjie Wang, Vanliem Nguyen, Li Zhang, Junya Zhang

{"title":"Designing and analyzing the efficiency of seat’s three vibration isolator modes in improving the driver’s comfort","authors":"Xiangjie Wang, Vanliem Nguyen, Li Zhang, Junya Zhang","doi":"10.1177/09574565241243392","DOIUrl":"https://doi.org/10.1177/09574565241243392","url":null,"abstract":"This study proposes three vibration isolator modes of the seat designed by horizontal-parallel isolator (HPI), vertical-parallel isolator (VPI), and negative-stiffness isolator (NSI) for improving the vehicle seat’s comfort. The influence of the dynamic parameters of three vibration isolator models is then analyzed based on their three dynamic models. Their dynamic parameters have been then optimised for comparing the isolation performance of HPI, VPI, and NSI based on root-mean-square (RMS) accelerations in the vertical, pitch, and roll directions of the driver’s seat. Research shows that driver comfort has been insignificantly affected by dimensions whereas driver comfort has been greatly affected by dynamic parameters of three vibration isolator modes. Based on the optimized parameters of HPI, VPI, and NSI, the vertical comfort of the driver with the NSI has been improved better than that of both the HPI and VPI, conversely, the pitch comfort and roll comfort of the driver with the VPI has been improved better than that of both the HPI and NSI. In order to improve the comfort of the driver in three directions, the VPI should be combined with the NSI to design the seat isolator of vehicles.","PeriodicalId":508830,"journal":{"name":"Noise & Vibration Worldwide","volume":"105 49","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140380673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the isolation performance of two operator’s seat suspension systems 两种操作员座椅悬挂系统的隔离性能分析

Noise & Vibration Worldwide Pub Date : 2024-03-11 DOI: 10.1177/09574565241238352

Zhijin Zhai, Guanghui Gao, Yundong Mei

{"title":"Analysis of the isolation performance of two operator’s seat suspension systems","authors":"Zhijin Zhai, Guanghui Gao, Yundong Mei","doi":"10.1177/09574565241238352","DOIUrl":"https://doi.org/10.1177/09574565241238352","url":null,"abstract":"From the good isolation results of Negative-Stiffness (NS) suspension and Three-Parallel (TP) suspension, the new isolation models designed by NSTP suspension (combination of NS and TP) and TPNS suspension (combination of TP and NS) to improve the operator’s shaking and riding quality have been investigated based on a 3-D dynamic model of car. Sensitivity of initial parameters in NSTP and TPNS suspension are analyzed and optimised via root mean square of the vertical acceleration ( a wzs), pitching acceleration ( a wϕs), and rolling acceleration ( a wθs) of operator’s seat. Research shows that (1) the vertical-riding quality in operator’s seat designed by NSTP and TPNS suspension is enhanced by 54.9% and 55.5% compared to the traditional suspension of operator’s seat; (2) the isolation efficiency in the vertical direction of both NSTP and TPNS suspension is similar. However, the a wϕs and a wθs with TPNS suspension are greatly deteriorated by 48.9% and 54.5% in comparison with NSTP suspension; (3) design parameters of NSTP suspension greatly affect the a wzs, a wϕs, and a wθs; whereas design parameters of TPNS suspension insignificantly affect the a wzs, a wϕs, and a wθs; and (4) the a wzs, a wϕs, and a wθs with optimised TPNS suspension are smaller than designed TPNS suspension by 42.8%, 71.3%, and 78.1%, respectively. Therefore, optimised TPNS suspension should be applied to further ameliorate operator’s shaking and riding quality.","PeriodicalId":508830,"journal":{"name":"Noise & Vibration Worldwide","volume":"35 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140252783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biography of guest editor, Michael Kingan 特邀编辑迈克尔-金根的简历

Noise & Vibration Worldwide Pub Date : 2024-03-01 DOI: 10.1177/09574565241241184

引用次数: 0

Biography of guest editor, Dr. Prasun Jana 特邀编辑 Prasun Jana 博士简介

Noise & Vibration Worldwide Pub Date : 2024-03-01 DOI: 10.1177/09574565241241123

引用次数: 0

A failure diagnosis method of ball bearing based on optimized multiscale variational modal extraction with synchro squeezing transformation 基于同步挤压变换的优化多尺度变分模态提取的球轴承故障诊断方法

Noise & Vibration Worldwide Pub Date : 2024-02-23 DOI: 10.1177/09574565241235327

Yongpeng Li, Mingyue Yu, Peng Wu, Baodong Qiao

{"title":"A failure diagnosis method of ball bearing based on optimized multiscale variational modal extraction with synchro squeezing transformation","authors":"Yongpeng Li, Mingyue Yu, Peng Wu, Baodong Qiao","doi":"10.1177/09574565241235327","DOIUrl":"https://doi.org/10.1177/09574565241235327","url":null,"abstract":"When a compound failure occurs in a bearing, the failure information included in vibration signals is featured by being weak, complex and combined. This fact makes it difficult to identify a compound failure precisely. Variational mode extraction (VME) solves the problem of variational mode decomposition (VMD) in being difficult to determine the number of decomposition layers and has certain applications in the identification of bearing failures. However, the initial expected central frequency of VME and option of penalty factor is crucial to the extraction of expected mode. To precisely determine the central frequency and penalty factor of VME and fulfill the correct extraction of feature information of compound failures in bearing, the paper has proposed a method based on synchro squeezing transform (SST) and information entropy to adaptively determine the parameters in VME (SST-VME). Firstly, SST is used to make time-frequency analysis of original vibration signals and characteristic frequency bands with larger energy are chosen from time-frequency spectrum to adaptively determine the expected central frequency of VME. Secondly, as information entropy has representation capacity for information included in the signal, penalty factor of VME was adaptively determined according to information entropy. Thirdly, original signals were subjected to VME according to expected central frequency and penalty factor adaptively determined; the expectation mode obtained was denoised by singular value decomposition algorithm. Finally, the type of compound failures of bearing is determined according to the frequency spectrum of denoised signals. To verify the effectiveness of proposed method, a comparison with VMD algorithm is conducted. As indicated by the result, the proposed method is more precise and comprehensive than VMD algorithm to extract the feature information corresponding to compound faults of bearing, and thereby correctly determines the type of compound failures.","PeriodicalId":508830,"journal":{"name":"Noise & Vibration Worldwide","volume":"7 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical analysis of brake squeal noise – Application to the disk brake systems 制动尖叫噪音的数值分析 - 盘式制动系统的应用

Noise & Vibration Worldwide Pub Date : 2024-02-17 DOI: 10.1177/09574565241235329

M. Bouazizi, Mohamed Soula, T. Lazghab

引用次数: 0

Noise &amp; Vibration Worldwide最新文献

Noise & Vibration Worldwide最新文献