Vibroengineering PROCEDIA最新文献_第3页

Study on the vibration characteristics of deep groove ball bearings under time-varying loads 时变载荷下深沟球轴承的振动特性研究

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23700

Zeguang Han, Xiaofei Chen, Ruiqin Hao, Facai Liu, Jiaqi Li

{"title":"Study on the vibration characteristics of deep groove ball bearings under time-varying loads","authors":"Zeguang Han, Xiaofei Chen, Ruiqin Hao, Facai Liu, Jiaqi Li","doi":"10.21595/vp.2023.23700","DOIUrl":"https://doi.org/10.21595/vp.2023.23700","url":null,"abstract":"A general methodology for dynamic modeling and analysis of deep groove ball bearing used in the crank-slider mechanism of punching machine is presented in this paper. The time-varying loads applied at the inner ring of this bearing can be obtained by analyzing the planar multibody systems. The bearing joint has been modeled by introducing a nonlinear constraint force system, which takes into account the contact stiffness interaction between the rolling elements and the raceways. The four-degree-of-freedom dynamic equations for the inner and outer rings of the bearings is established by Newton's second law. By numerical calculation, the variations of the load, trajectory, FFT frequency domain response, and x direction phase trajectory and Poincare of the inner ring, and the contact force on each ball element are discussed. The results indicate that the present methodology can not only be used to analyze the overall dynamic behavior of crank-slider mechanism and the deep groove ball bearing used in punching machine, but also to obtain the dynamic loads of the inner ring and ball in bearing. Therefore, the dynamic loads on ball elements can provide a basis for the strength checking, fatigue life calculation and wear analysis of the deep groove ball bearing.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"100 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139237464","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

Kinematic analysis and geometrical parameters justification of a planetary-type mechanism for actuating an inertial vibration exciter 用于驱动惯性振动激振器的行星式机构的运动学分析和几何参数论证

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23728

V. Korendiy, Oleh Parashchyn, Volodymyr Heletiy, Viacheslav Pasika, V. Gurey, N. Maherus

{"title":"Kinematic analysis and geometrical parameters justification of a planetary-type mechanism for actuating an inertial vibration exciter","authors":"V. Korendiy, Oleh Parashchyn, Volodymyr Heletiy, Viacheslav Pasika, V. Gurey, N. Maherus","doi":"10.21595/vp.2023.23728","DOIUrl":"https://doi.org/10.21595/vp.2023.23728","url":null,"abstract":"Vibration exciters are of most important units of any vibratory equipment defining its design peculiarities, operational features, functional purpose, and performance characteristics. Among a great variety of vibration exciters, the unbalanced rotors are of the most widely used. The present research considers the possibilities of providing specific motion trajectories of the vibratory machines’ working members with the help of the planetary-type vibration exciter. The methodology of this study is divided into two main stages: deriving motion equations of an unbalanced mass located on a planet gear and analyzing the possibilities of generating rectilinear, elliptical, and circular motion paths by choosing the appropriate geometrical parameters of the planetary gear train. The results of the performed kinematic analysis are presented in the form of the unbalanced mass trajectories, velocities, and accelerations at different design parameters of the planetary-type mechanism. The main scientific novelty of the present study is substantiating the possibilities of using the single-degree-of-freedom planetary-type mechanism for generating the controllable motion trajectories of the unbalanced mass of an inertial vibration exciter. The obtained results can be practically implemented while developing novel adjustable drives for various vibratory equipment, particularly compactors, sieves, screens, and conveyors.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"10 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139237999","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

Optimization of vane pump structure based on modal characteristic analysis 基于模态特性分析的叶片泵结构优化

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23692

Jinping Chi

引用次数: 0

Anti-deformation performance of asphalt modified by carbon black extracted from waste cooking oil pyrolysis waste tires rubber 从废食用油热解废轮胎橡胶中提取的炭黑改性沥青的抗变形性能

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23647

Yiling Li, Yankai Qin

{"title":"Anti-deformation performance of asphalt modified by carbon black extracted from waste cooking oil pyrolysis waste tires rubber","authors":"Yiling Li, Yankai Qin","doi":"10.21595/vp.2023.23647","DOIUrl":"https://doi.org/10.21595/vp.2023.23647","url":null,"abstract":"As a promising renewable resource, waste tire rubber powder has been utilized to enhance asphalt performance but it has compatibility concerns with matrix asphalt. To solve the phase separation between crumb tire rubber (CTR) and asphalt, waste cooking oil (WCO) has been successfully employed as the solvent to desulfurize crumb rubber. However, about 30 % of carbon black is wrapped in crumb rubber, which has a high recycling value. The cross-linking network structure of the crumb rubber can be loosened by waste cooking oil, and the carbon black will gradually peel off. This study desulfurizes crumb rubber with waste cooking oil at 180 ℃, and the carbon black produced by the evolution of rubber structure was separated by Soxhlet extraction. The rubber-cracked carbon black (RCCB) and the industrial carbon black N330 were added to asphalt, and the impact of the two different carbon black on the anti-deformation of asphalt was analyzed by dynamic shear rheometer (DSR). The results indicated that at the same dosage of 5 %, the carbon black separated from rubber will weaken the deformation resistance of asphalt at high temperatures, rather than improving it like N330 produced in the industry.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"5 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139238122","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

Design and application of gearbox vibration testing system 齿轮箱振动测试系统的设计与应用

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23690

Shengrong Geng, Jian Chen, Changwei Lv

{"title":"Design and application of gearbox vibration testing system","authors":"Shengrong Geng, Jian Chen, Changwei Lv","doi":"10.21595/vp.2023.23690","DOIUrl":"https://doi.org/10.21595/vp.2023.23690","url":null,"abstract":"Judging the working status of a gearbox through the characteristics of vibration signals was an effective fault diagnosis method. In order to improve the efficiency and reliability of vibration detection, a multi node testing system based on a microcontroller was designed and validated. The system mainly consists of signal processing equipment, signal collector, upper computer, sensors, and experimental workbench. Under different types of gear faults, the vibration signals of ten sets of gearboxes were synchronously collected and processed. In order to ensure the resolution of frequency conversion and accurately locate frequency conversion, the low-pass filtered spectrum with a filtering frequency of 1000 was verified and used to calculate the amplitude of frequency conversion. The normalization of amplitude was more conducive to feature recognition, and the frequency amplitude was proportional to its corresponding energy. According to standard spectral data and spectral analysis, wear, pitting, fracture, and bonding faults in the gearbox were identified and classified. Through the verification of three order feature spectrum, it can be seen that the accuracy of fault prediction for gearbox through vibration signals is high, which can effectively reduce maintenance and repair costs.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139236898","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

Application of computer simulation technology in modal analysis of engine mount 计算机模拟技术在发动机悬置模态分析中的应用

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23675

Yuping Yun

引用次数: 0

Analysis of the effect of maneuvering overload on the reaction force of the main shaft bearing in aero-engine 操纵过载对航空发动机主轴轴承反作用力的影响分析

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23682

Zhenhe Jiang, Moli Chen, Guihuo Luo, Weiying Wang

{"title":"Analysis of the effect of maneuvering overload on the reaction force of the main shaft bearing in aero-engine","authors":"Zhenhe Jiang, Moli Chen, Guihuo Luo, Weiying Wang","doi":"10.21595/vp.2023.23682","DOIUrl":"https://doi.org/10.21595/vp.2023.23682","url":null,"abstract":"In order to study the effects of maneuvering overload on the main shaft bearing (abbreviation: bearing) reaction force in an aero-engine, a bending-torsion coupling dynamic model of the dual rotor system under maneuvering overload was established. Combined with the output parameters of the system model, the bearing reaction force analysis model was established. The maneuvering overload parameters are input into system model. Newmark-β and Newton-raphson methods are used to obtain the bearing reaction force response, and the change laws of bearing reaction force under the different maneuvering overloads are analyzed. The results show that gravity will make the transient response of bearing reaction force offset, and maneuvering overload will make the offset shift. Maneuvering overload will cause bearing to produce a circumferential asymmetric reaction force. For bearing 1, the additional gyroscopic torque in maneuvering overload has a significant effect on the dynamic eccentricity, resulting in a larger offset of reaction force of y direction. For bearings 3 and 4, reaction force of x direction has a larger offset. Under the influence of bent-torsional coupling, the combined frequencies of base frequencies of rotational speed appear in the reaction force spectrum diagram.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139236890","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

Permanent displacement estimation method based on variational mode decomposition 基于变模分解的永久位移估算方法

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23663

Xiaoquan Xu, Yinfeng Dong, Dezhi Fang, Dong Li

引用次数: 0

Effect of excitation frequencies on phase contrast in tapping mode atomic force microscope 激发频率对攻丝模式原子力显微镜相衬的影响

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23721

Yu Zeng, Guolin Liu, Jinhao Liu, Zheng Wei

引用次数: 0

Study on the performance of gravel stabilization by red mud-based cementitious materials 红泥基胶凝材料稳定砾石性能的研究

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23632

Huiqin Zhang, Ping Ji, Si Wu

引用次数: 0