Noise and Vibration Worldwide最新文献_第10页

A research on rubbing feature extraction based on information fusion and signal decomposition algorithm 基于信息融合和信号分解算法的摩擦特征提取研究

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093224

Mingyue Yu, Haonan Cong, Wangying Chen

{"title":"A research on rubbing feature extraction based on information fusion and signal decomposition algorithm","authors":"Mingyue Yu, Haonan Cong, Wangying Chen","doi":"10.1177/09574565221093224","DOIUrl":"https://doi.org/10.1177/09574565221093224","url":null,"abstract":"To effectively identify the rotor–stator rubbing fault, the paper has brought forward a method combining principal component analysis (PCA), intrinsic time-scale decomposition (ITD), and information entropy (IE). Firstly, in considering that the characteristic information of faults extracted from the information collected by single sensor is not complete or comprehensive, the approach blends the vibration signals collected from 4 different positions at the same moment based on PCA algorithm; secondly, regarding that ITD algorithm can effectively avoid the problems of poor adaptivity and end effect, blended signals are broken down based on ITD algorithm; thirdly, calculate the IE of self-correlation function of each PRC based on the fact that the smaller IE is, the less confusion system has and the easier it is to extract fault characteristics, and treat the self-correlation function of PRC related with the minimum IE as optimal component to represent fault characteristics; fourthly, characteristic extraction of rotor–stator rubbing fault and identification are done on the basis of the frequency spectrum of optimal component. To prove the availability of method, vibration signals are subjected to validation and analysis, which are collected from different rotation speeds, casing thicknesses, rubbing positions, and types. The result indicates that the proposed PCA–ITD–IE can equally and effectively extract the characteristics of rotor–stator rubbing faults of aero-engine involved in various conditions.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"53 1","pages":"172 - 188"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49236531","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

Noise reduction method for non-stationary noise of vibration signal of shearer mechanical transmission system 采煤机机械传动系统振动信号非平稳噪声的降噪方法

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093231

Q. Mao, Fei Zhang, Weipeng Jia, Yongqiang Zhang, Xuhui Zhang, Hongwei Fan

{"title":"Noise reduction method for non-stationary noise of vibration signal of shearer mechanical transmission system","authors":"Q. Mao, Fei Zhang, Weipeng Jia, Yongqiang Zhang, Xuhui Zhang, Hongwei Fan","doi":"10.1177/09574565221093231","DOIUrl":"https://doi.org/10.1177/09574565221093231","url":null,"abstract":"Aiming at the problem that vibration signal of mechanical transmission system of shearer is vulnerable to be interferenced by non-stationary strong noise, a combined method with variational mode decomposition and recursive least squares (VMD-RLS) is proposed for non-stationary noise reduction. Firstly, the vibration signal is decomposed by VMD and the number of decomposition layers is determined according to the principle of minimum energy difference. Then, a dominant criterion of frequency-domain characteristic amplitude is proposed to select invalid intrinsic mode components (IMF, Intrinsic Mode Function). The proportion of the frequency-domain characteristic amplitude of each order IMF component for VMD is calculated. The invalid intrinsic mode functions are selected for reconstruction, and the noise signal after VMD decomposition is obtained. Finally, the noise signal decomposed by VMD is used as reference noise signal of RLS adaptive filtering algorithm to carry out adaptive noise reduction, and the final vibration signal after noise reduction is obtained. The wavelet de-noising method, VMD de-noising method, and VMD-RLS de-noising method are used to carry out noise reduction comparative experiment on the vibration signal of shearer. The experiment results indicate that the noise reduction method of VMD-RLS is better than VMD and wavelet de-noising method. The noise reduction method of VMD-RLS can effectively extract vibration signals from non-stationary strong noise, and provide help for the subsequent fault diagnosis and analysis of shearer mechanical transmission system.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"53 1","pages":"206 - 213"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48654650","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

Stochastic optimal preview control response of a quarter-car nonlinear suspension model using spectral decomposition method 用谱分解方法求解四分之一轿车非线性悬架模型的随机最优预瞄控制响应

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093234

L. Gopala Rao, R. Sharma, V. Satyanarayana, S. Palli

引用次数: 4

Investigation of chatter prediction in end milling using morphological studies on aluminum alloy (Al6061) 铝合金（Al6061）端面铣削颤振预测的形态学研究

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093232

J. Shaik, R. R. Mutra, A. Galal, Sinivasa R Tanneeru

{"title":"Investigation of chatter prediction in end milling using morphological studies on aluminum alloy (Al6061)","authors":"J. Shaik, R. R. Mutra, A. Galal, Sinivasa R Tanneeru","doi":"10.1177/09574565221093232","DOIUrl":"https://doi.org/10.1177/09574565221093232","url":null,"abstract":"Future machine tools have to be highly powerful systems to maintain the needed intellectual performance and stability. The machine tool systems such as Spindle/Tool-holder/Tool assembly are necessary to be optimized for their functionality or cutting performance to meet the productivity and accessibility requirements of the user. Prediction of the dynamic behavior at the spindle tool-tip is, therefore, an important criterion for assessing the machining stability of a machine tool at the design stage. In commercial practice, the machine tool system is extensively influenced by the dynamic rigidity of the spindle system. In this work, a realistic dynamic high-speed spindle/milling tool holder/tool system model is elaborated based on rotor dynamics predictions. Using the finite element modeling with the Timoshenko beam theory, the frequency response at the tool-tip has arrived initially. Further, the numerical model is validated with 3D ANSYS and experimental modal testing. The theoretical stability lobe diagram (SLD) depends on the stiffness and damping properties of the cutting tool and distinguishes the stable and unstable cutting conditions. The mechanism of chatter formation is investigated experimentally during the end milling of Aluminum alloy (Al6061) by two different techniques. Experimental cutting tests are conducted at different depths of cuts, the corresponding vibration signals and cutting samples are examined using the Scanning electronic microscope (SEM) and optical microscope. These studies provide a detailed investigation to predict the stable and unstable cutting zones at different machining conditions.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"53 1","pages":"233 - 243"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43041925","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

Study on CNT reinforced functionally graded sandwich conical shell subjected to low-velocity impact under thermal environment 热环境下低速冲击下CNT增强功能梯度夹层锥形壳的研究

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093233

A. Das

{"title":"Study on CNT reinforced functionally graded sandwich conical shell subjected to low-velocity impact under thermal environment","authors":"A. Das","doi":"10.1177/09574565221093233","DOIUrl":"https://doi.org/10.1177/09574565221093233","url":null,"abstract":"In the present work, low-velocity impact behavior of pre-twisted carbon nanotubes (CNTs) reinforced functionally graded (FG) sandwich conical shell panels is studied using finite element method. The top and bottom face sheets are reinforced with single-walled CNTs reinforced FG materials with various patterns. The temperature-dependent material properties of the CNTs reinforced functionally graded facings are evaluated using micromechanical models. The dynamic equilibrium equation of the impacted sandwich panel is formulated using Lagrange’s equation. A modified Hertzian contact law is used to evaluate contact force. The solutions of the resulting equations are obtained using Newmark’s time integration method. After validation study of the present method, the effects of the CNTs grading pattern, velocity of the impactor, size of the impactor, CNTs volume fraction, operating temperature, angle of twist, and core-to-facing thickness ratio on the low-velocity impact response of the CNTs reinforced functionally graded sandwich conical shell panel are studied in detail. Numerical results show that increasing the volume fraction of CNTs increases the contact force while a lower contact force is predicted at elevated temperatures.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"53 1","pages":"189 - 205"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46250592","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: 1

Vibration control of laminated composite cantilever beam operating in elevated thermal environments using fuzzy logic controller 基于模糊逻辑控制器的叠层复合材料悬臂梁在高温环境下的振动控制

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093240

Ravi Kiran Akumalla, Vinayak Kallannavar, S. Kattimani

引用次数: 1

A solution for free vibration of rotating hybrid multiscale nanocomposite conical shell 旋转杂化多尺度纳米复合材料锥形壳的自由振动解

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093230

R. Banerjee, Mrutyunjay Rout, A. Karmakar, D. Bose

引用次数: 1

Dynamic and sound radiation characteristics of a non-uniformly heated isotropic plate 非均匀加热各向同性板的动力和声辐射特性

Noise and Vibration Worldwide Pub Date : 2022-04-01 DOI: 10.1177/09574565221093235

Arul Raj Vaiduriyam, Lenin Babu Mailan Chinnapandi, Jeyaraj Pichaimani

引用次数: 3

Analysis of the dynamic characteristics of the cage of high-speed angular contact bearings under preloaded load 预紧载荷作用下高速角接触轴承保持架动态特性分析

Noise and Vibration Worldwide Pub Date : 2022-01-01 DOI: 10.1177/09574565211052689

G. Zeng, Bingyang Liu, Q. Bian, C. Zhao, Z. Wen, Xiangyun Zhang, Ming Chen, Jinfeng Zhang

{"title":"Analysis of the dynamic characteristics of the cage of high-speed angular contact bearings under preloaded load","authors":"G. Zeng, Bingyang Liu, Q. Bian, C. Zhao, Z. Wen, Xiangyun Zhang, Ming Chen, Jinfeng Zhang","doi":"10.1177/09574565211052689","DOIUrl":"https://doi.org/10.1177/09574565211052689","url":null,"abstract":"First, the law of motion of the bearing cage, inner ring, and ball are theoretically analyzed. Combining the nonlinear contact and deformation relationship between the various elements of the bearing, an explicit dynamic model of the high-speed angular contact bearing is established. Second, the stability and motion characteristics of the cage are analyzed from four aspects: the three-dimensional center of mass motion track of the cage with time, the deviation ratio of the center of mass vortex velocity, the angular velocity, and the linear velocity. The dynamic characteristics of the cage during the start-up phase of unsteady operation have been emphatically studied. The research results show that during the start-up phase, the greater the preload, the later the circle of the center of mass motion track of the cage expands outward, and the better the stability. The higher the rotation speed, the earlier the vortex trajectory circle of the center of mass of the cage expands outward, and the motion stability first strengthens and then weakens. Finally, the simulated value of the linear velocity of each bearing element changes with time are compared with the theoretical value, the correctness of the established explicit dynamic model was verified.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"53 1","pages":"38 - 48"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42439322","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

Automotive simplex and duplex drum brake squeal analysis using the finite element method 用有限元法分析汽车单、双鼓式制动器的尖叫声

Noise and Vibration Worldwide Pub Date : 2022-01-01 DOI: 10.1177/09574565211052692

Anderson L Dias, Rômulo dN Rodrigues, Roberto dA Bezerra, P. Lamary

{"title":"Automotive simplex and duplex drum brake squeal analysis using the finite element method","authors":"Anderson L Dias, Rômulo dN Rodrigues, Roberto dA Bezerra, P. Lamary","doi":"10.1177/09574565211052692","DOIUrl":"https://doi.org/10.1177/09574565211052692","url":null,"abstract":"Despite the fact that disk brakes are used on almost entire mass produced vehicle, drum brakes are still applied on light-, medium-, and heavy-duty vehicles. However, both exhibit a high level of brake noises in which squeal is the most uncomfortable and one of the reasons behind high warranty costs that concern the automotive industry. Hence, the development of prediction methods and models of brake noise have prompted significant efforts. This study intends to analyze two types of drum brakes of a commercial automotive application. Their parametric finite element model comprises drum, shoes, and frictional linings and are submitted to a computational process that includes static calculations of the system under the brake forces to get a pre-stress state around which is computed the complex eigenvalues of the system which characterize their stability. These calculations indicate the unstable frequencies of the entire system. After the design of experiments (DOE) process, the influence of drum brake parameters on system stability can be seen. The friction coefficient and Young’s modulus presented a strong correlation with squeal incidence. At the end is presented a comparison and the optimal material parameters to decrease squeal noise occurrence of these brakes.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"53 1","pages":"49 - 64"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49545951","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: 2