Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology最新文献_第4页

Wear mechanism and leakage failure analysis of the mechanical seal end face of an oil transfer pump 油泵机械密封端面磨损机理及泄漏失效分析

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-16 DOI: 10.1177/13506501231206696

Lin Feng Qiao, Li Mo, Liangjie Mao, LingXiang Zeng

{"title":"Wear mechanism and leakage failure analysis of the mechanical seal end face of an oil transfer pump","authors":"Lin Feng Qiao, Li Mo, Liangjie Mao, LingXiang Zeng","doi":"10.1177/13506501231206696","DOIUrl":"https://doi.org/10.1177/13506501231206696","url":null,"abstract":"The John Crane 48 V mechanical seal is a long-distance oil transfer pump station shaft end seal; its sealing effect directly affects pipeline production safety. However, it has been found that there is oil leakage at the shaft end of the pump station. In order to explore the oil transfer pump mechanical seal abnormal leakage failure causes, to ensure the safety and stability of production, the end face of the 48 V mechanical seal was analyzed by white light interference and scanning electron microscope technology. The failure mechanism of the 48 V mechanical seal was explored from the perspective of the wear mechanism of moving and stationary rings. Results showed that the wear mechanism of the 48 V mechanical seal stationary ring was mainly abrasive wear, and substantial furrows, bulges, and depressions existed on the wear surface. The material removal mechanism was brittle spalling, and the roughness of the wear surface increased with the increase in wear depth and decreased with the increase in wear average width. Uneven wear occurred on the end face of the stationary ring of the mechanical seal, resulting in the leakage of the sealing medium from the end cover of the mechanical seal. The working condition could be improved by adding a spring compensation device to the stationary ring or increasing the gap between the stationary ring and the shaft sleeve.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136078819","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

Thermal analysis and optimization of bionic cooling channels of gas foil thrust bearings 气体箔型推力轴承仿生冷却通道的热分析与优化

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-12 DOI: 10.1177/13506501231207162

Qi Zhao, Shaohang Yan, Mingchen Qiang, Yu Hou, Tianwei Lai

{"title":"Thermal analysis and optimization of bionic cooling channels of gas foil thrust bearings","authors":"Qi Zhao, Shaohang Yan, Mingchen Qiang, Yu Hou, Tianwei Lai","doi":"10.1177/13506501231207162","DOIUrl":"https://doi.org/10.1177/13506501231207162","url":null,"abstract":"Under high-temperature conditions, heat evacuation of foil bearing has a significant impact on bearing performance, including loading performance and reliability. During bearing operation, viscous dissipative heat in the lubricant gas film is the main source of heat generation. For foil bearings, enhancing the heat evacuation efficiency is essential to extend the bearing service life in high-temperature environments. For heat evacuation, foil-side cooling is a very effective method. For more in-depth analysis of thermal characteristics of the foil bearing, a three-dimensional (3D) thermal-elasto-hydrodynamic (TEHD) coupling model of multi-leaf thrust foil bearing (MLTFB) with cooling channel is established in this paper. In view of the good heat transfer performance and more uniform gas velocity distribution in bionic flow channels, various bionic cooling channels of foil bearings are proposed and the structural parameters are optimized. The effects of cooling channel type, cooling channel width, span ratio, cooling gas supply mode, and rotational speed on the thermal and loading performance of foil bearings are investigated. The studies demonstrate that the spider net round cooling channel exhibits higher heat transfer performance and improved uniformity of temperature. Compared to the cooling gas supply from inner edge, the cooling gas supply from the outer edge proves to be more effective. The maximum temperature of lubricant gas film can be greatly reduced with wider cooling channels and a smaller channel span at the outer edge. The maximum temperature of lubricant gas film and bearing load are reduced as the Reynolds number of cooling gas increases. There exists an optimal Reynolds number that can achieve the highest uniformity of temperature.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969126","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

Influence of the metal coating on nano-cutting process of cubic silicon carbide 金属涂层对立方碳化硅纳米切削过程的影响

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-12 DOI: 10.1177/13506501231204652

Guanglan Hu, Houfu Dai

{"title":"Influence of the metal coating on nano-cutting process of cubic silicon carbide","authors":"Guanglan Hu, Houfu Dai","doi":"10.1177/13506501231204652","DOIUrl":"https://doi.org/10.1177/13506501231204652","url":null,"abstract":"The effect of the metal coating on the machinability of cubic silicon carbide was investigated by molecular dynamics simulation. The effect of the metal coating on the surface of the workpiece was explained using cutting force, friction coefficient, surface morphology, stress, temperature, and tool wear. The results show that the influence of metal type on cutting force, surface morphology, and stress is insignificant for coating thickness. However, the model with Cu coating has a tool suspension key number of 400 at the maximum cutting distance. The number of tool suspension keys for the Ni-Ti coating model is around 1700, indicating that the type of coating has a significant impact on tool wear. Furthermore, the results also show that in the three metals of Cu, Ni and Ni -Ti, Cu coating has the greatest impact on improving cutting performance. Among them, the average cutting force of 1.5 nm Cu coating is about 33.3% lower than that of without coating, and the tool wear is about 26.7% lower. These results demonstrate the effects of the metal coating on the workpiece surface from a theoretical point of view.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136014417","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

An investigation of the wear and efficiency in non-standard internal spur gear set 非标准内直齿轮组的磨损与效率研究

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-06 DOI: 10.1177/13506501231205172

R Ravivarman, R Prabhu Sekar

{"title":"An investigation of the wear and efficiency in non-standard internal spur gear set","authors":"R Ravivarman, R Prabhu Sekar","doi":"10.1177/13506501231205172","DOIUrl":"https://doi.org/10.1177/13506501231205172","url":null,"abstract":"In this research, a finite-element model of internal gear drives with different tooth thickness factors (non-standard gear drives) is generated in order to investigate their performance characteristics. The finite-element analysis includes a focused mixture of non-standard internal gear set under enhanced bending and contact strength conditions for an accurate assessment of wear and efficiency. The analysis comprised gear sets having higher bending strength compared to the conditions in the standard internal gear drive to evaluate the tooth wear and its efficiency. A state-of-the-art semi-analytical nonlinear contact mechanics construction is executed to model a non-standard internal gear transmission unit. The tooth thickness of the non-standard internal gear is varied concerning the stresses and is quantified as a function. The computed results also extended with internal gear sets at varying operating parameters. The results evidently specify that power loss decreases with the proper combination of operating parameters. The results are presented and strategies concerning the design of a non-standard internal gear are also deliberated.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135345724","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 decoupled approach to enhance the Elrod algorithm 一种改进Elrod算法的解耦方法

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Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-06 DOI: 10.1177/13506501231205361

Xiang Wang, Wanjun Xu

引用次数: 0

Wear and friction of self-lubricating coatings applied to spur gears in fluid- free aerospace actuation gearboxes 无流体航空传动齿轮箱中应用于正齿轮的自润滑涂层的磨损和摩擦

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-06 DOI: 10.1177/13506501231197486

Thomas Finch, Tomas Vitu, Tomas Polcar

引用次数: 0

Progress in polymeric and metallic brake pads: A comprehensive review 聚合物和金属刹车片的研究进展综述

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-06 DOI: 10.1177/13506501231204655

B. Bilvatej, J. Naveen, N. Karthikeyan, M. N. F. Norrrahim, Victor Feizal Knight, M. Jawaid, M. T. H. Sultan, Mallikarjuna Reddy Dagalahal, M. Chandrasekar, Tamil Moli Loganathan

{"title":"Progress in polymeric and metallic brake pads: A comprehensive review","authors":"B. Bilvatej, J. Naveen, N. Karthikeyan, M. N. F. Norrrahim, Victor Feizal Knight, M. Jawaid, M. T. H. Sultan, Mallikarjuna Reddy Dagalahal, M. Chandrasekar, Tamil Moli Loganathan","doi":"10.1177/13506501231204655","DOIUrl":"https://doi.org/10.1177/13506501231204655","url":null,"abstract":"The use of asbestos in brake pads is being eliminated due to its carcinogenic effect. Due to this, there is a need for better alternative in the brake pad material to replace asbestos fibers. This leads to the development of more natural fibers/filler-based brake pads which are safer to the environment, cheaper, and readily available. Moreover, bio fillers-based brake pads have shown excellent performance compared to asbestos. This paper addresses the different composition of brake pad materials and manufacturing techniques. Common binders like epoxy resin, Phenolic resin-based brake pads were analyzed and its effect on the mechanical, tribological, and thermal performance were critically analyzed. Also, the performance of metal matrix-based brake pad has been analyzed in detail. It has been observed that utilizing natural fibers as a reinforcement provides an excellent braking performance compared to metallic and carbon fiber-based brake pads. This research will open new avenues towards “Net Zero.”","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135346005","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

Investigation of the tribological properties of POM and UHMWPE radial journal bearings made with different surface quality 不同表面质量的聚甲醛和超高分子量聚乙烯径向滑动轴承的摩擦学性能研究

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-04 DOI: 10.1177/13506501231205171

Yakup Artun, C Oktay Azeloglu, Gökhan Taylan

{"title":"Investigation of the tribological properties of POM and UHMWPE radial journal bearings made with different surface quality","authors":"Yakup Artun, C Oktay Azeloglu, Gökhan Taylan","doi":"10.1177/13506501231205171","DOIUrl":"https://doi.org/10.1177/13506501231205171","url":null,"abstract":"Journal bearings are essential machine elements that are widely used in the bearing of rotating or oscillating machine parts. Many studies in the literature examine the tribological properties of journal bearings. Most of these studies focus on polymer journal bearings and testing the tribological performances of different bearing materials with the same surface quality. In this article, radial journal bearings produced from ultra-high molecular weight polyethylene (UHMWPE) material and polyoxymethylene (POM) material in two different surface qualities in the range of N7–N8 and N10–N11 were tested under different load and different speed scenarios and their tribological performances and relationship of this performance between material and surface roughness were investigated. For this purpose, first of all, bearing samples were designed and manufactured. All samples’ tribological and physical properties before the tests were measured, and then tests were carried out according to the determined scenarios. Different loads, different speeds, and different sliding distances were used in the scenarios. As a result, 96 tests were carried out by testing each situation three times in eight scenarios, with two different surface qualities from two different materials. In the tests, the friction coefficient, temperature, and weight loss values of all samples were measured, and after the tests, surface roughness measurements and SEM analyses were made. As a result, all the data obtained from the tests and measuring devices were compared with the pre-test conditions and material and surface quality. The results obtained from the comparisons and the evaluations of tribological performance are discussed in the conclusion part. The study results show that the material and the surface quality significantly affect the tribological performance.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135591396","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

Research on influencing factors of deformation of hydrostatic thrust bearings 静压止推轴承变形影响因素研究

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-10-03 DOI: 10.1177/13506501231196436

Xiao-Dong Yu, Hai-Xin Liu, Fei-Hu Zhao, Rui-Chao Li, Kai-Xuan Sun, Yi-Han Wang, Li-Bo Guan, Rui-Chun Dai, Wen-Tao Jia, Jun-Feng Wang, Hui Jiang, Jian-Hua Jiao

{"title":"Research on influencing factors of deformation of hydrostatic thrust bearings","authors":"Xiao-Dong Yu, Hai-Xin Liu, Fei-Hu Zhao, Rui-Chao Li, Kai-Xuan Sun, Yi-Han Wang, Li-Bo Guan, Rui-Chun Dai, Wen-Tao Jia, Jun-Feng Wang, Hui Jiang, Jian-Hua Jiao","doi":"10.1177/13506501231196436","DOIUrl":"https://doi.org/10.1177/13506501231196436","url":null,"abstract":"When the hydrostatic thrust bearings operate under conditions of high speed and heavy load, the oil film will be strongly sheared and squeezed, which will increase the temperature of the hydrostatic oil film, resulting in uneven deformation of the workbench and tribology in serious cases. The deformation of the friction pair greatly affects the stability of the workbench during operation, and then affects the machining accuracy. Taking the hydrostatic thrust bearings as the research object, the model of hydrostatic thrust bearings was established based on the fluid–thermosolid coupling theory, and the influencing factors of the deformation of the hydrostatic thrust bearings are analyzed using ANSYS Workbench software, and the influencing laws are discussed. Finally, the correctness of the simulation method is verified by experiments. The results show that the larger the lubricating oil viscosity, the greater the deformation of the guide surface and the oil pad. With the increase in the rotation rate, the deformation of the guide surface and the oil pad increases continuously. With the increase in the inlet flow rate, the deformation of the guide surface and the oil pad is continuously reduced. In engineering practice, on the premise of ensuring the bearings capacity, low-viscosity lubricating oil should be used as much as possible, the rotation rate should be lower, or the inlet flow rate should be increased.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135690005","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 new coated self-lubricating spherical plain bearing with high performance and excellent security 一种新型涂层自润滑球面滑动轴承，具有高性能和优异的安全性

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-09-27 DOI: 10.1177/13506501231203034

Yunfan Liu, Guozheng Ma, Lina Zhu, Cuihong Han, Zhen Li, Bin Zhang, Haichao Zhao, Haidou Wang, Shuying Chen

{"title":"A new coated self-lubricating spherical plain bearing with high performance and excellent security","authors":"Yunfan Liu, Guozheng Ma, Lina Zhu, Cuihong Han, Zhen Li, Bin Zhang, Haichao Zhao, Haidou Wang, Shuying Chen","doi":"10.1177/13506501231203034","DOIUrl":"https://doi.org/10.1177/13506501231203034","url":null,"abstract":"The low service performance and sudden failure characteristics of coated self-lubricating spherical plain bearings (SPBs) limit their engineering application prospects. In the current study, two new self-lubricating coatings types were applied to the bearing contact surfaces. The bearings were compared and investigated using life tests. Furthermore, the wear failure mechanism was investigated. The results show that self-lubricating coatings improved the service performance of the traditional bearings with manganese phosphate coating. Among them, double-sided coated bearings had the best service performance and life. More interestingly, the torque and temperature rise signal curves will show a notable signal downstage before the signal mutation stage. The large-area and complete mixed friction transfer film on the contact surfaces was the main reason for the signal downstage. Moreover, the failure mechanism changed from abrasive wear to adhesive wear and fatigue wear with the increment of load. This study results preliminarily verify the performance improvement of high-performance coatings and provide a theoretical reference for further breaking through the engineering application bottleneck of coated self-lubricating SPBs.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135536767","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