Journal of Tribology-transactions of The Asme最新文献_第5页

Simulation of air ingestion in a mechanical seal with inward pumping spiral grooves 内泵螺旋槽机械密封中空气吸入的模拟

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-07-04 DOI: 10.1115/1.4062899

A. Medjahed, A. Blouin, B. Pap, N. Brunetière

引用次数: 0

Data-driven model of the distribution lubrication on water-lubricated bearing under severe operating conditions 恶劣工况下水润滑轴承分布润滑的数据驱动模型

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-07-04 DOI: 10.1115/1.4062900

Wu Ouyang, Qilin Liu, Xingxin Liang, Xueqin Zhang, Wenjing Wang

{"title":"Data-driven model of the distribution lubrication on water-lubricated bearing under severe operating conditions","authors":"Wu Ouyang, Qilin Liu, Xingxin Liang, Xueqin Zhang, Wenjing Wang","doi":"10.1115/1.4062900","DOIUrl":"https://doi.org/10.1115/1.4062900","url":null,"abstract":"\u0000 To resolve the contradiction between the method used to design bearings based on traditional lubrication theory and the actual state of service of water-lubricated bearings (WLBs), this paper proposes a data-driven method for the model of the distribution of lubrication on WLBs. A full-sized WLB test bench featuring multi-sectional pressure due to the film of water and a system to measure the axis of the orbit was built to perform tests under severe operating conditions (75 kN, 25~220 r/min). A dataset of the operating parameters of the bearings was obtained based on the results of tests under varying operating conditions. An artificial neural network algorithm was applied to train the proposed model, and its capabilities of prediction and extrapolation were systematically analyzed by using samples with different ranges of values. The proposed model was then used to examine the distributed characteristics of lubrication of the WLB to investigate the effects of variations in speed and elevation on bearing performance. The results showed that it has satisfactory capabilities of prediction and extrapolation under the same elevation and variation in speed. Under severe operating conditions, two significant peaks of pressure of the film of water appeared at both ends of the WLB, and variations in the speed of the shaft and the elevation of the bearings had prominent effects on the state of distributed lubrication of the bearings. The results reported here provide a new approach to designing and optimizing the structure of WLB.","PeriodicalId":17586,"journal":{"name":"Journal of Tribology-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45462927","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 simplified thermal plasto-elastohydrodynamic lubrication model for circular contact with real surface roughness 考虑实际表面粗糙度的圆形接触热弹流润滑简化模型

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-07-04 DOI: 10.1115/1.4062898

P. Romio, P. Marques, C. M. Fernandes, J. Seabra

引用次数: 0

Vibration Analysis Approach to Model Incremental Wear and Associated Sound in Multi-Contact Sliding Friction Mechanisms 多接触滑动摩擦机构中增量磨损及相关声音的振动分析方法

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-07-04 DOI: 10.1115/1.4062720

K. Basit, H. Shams, M. Khan, A. Mansoor

引用次数: 0

Tribological Performance and In Situ-Generated Oxidative Layer of Cobalt-Based Alloy From 25 °C to 800 °C 钴基合金在25°C至800°C范围内的摩擦学性能和原位氧化层

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-07-04 DOI: 10.1115/1.4062738

Hui Huang, G. Yi, Shanhong Wan, C. Kong, S. Pham

引用次数: 0

Special issue: Tribo-informatics: toward high-efficiency tribology research 特刊：摩擦学信息学：迈向高效摩擦学研究

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-06-30 DOI: 10.1115/1.4062876

Yi Zhu, Zhinan Zhang, F. Sadeghi

引用次数: 0

Tribological Characteristics of Tantalum-Oxide Coating Fabricated on Pre-Treated 2024 Aluminum Alloys 预处理2024铝合金表面氧化钽涂层的摩擦学特性

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-06-26 DOI: 10.1115/1.4062721

Sevda Albayrak, Canser Gül, H. Çinici, Ö. Şahin

{"title":"Tribological Characteristics of Tantalum-Oxide Coating Fabricated on Pre-Treated 2024 Aluminum Alloys","authors":"Sevda Albayrak, Canser Gül, H. Çinici, Ö. Şahin","doi":"10.1115/1.4062721","DOIUrl":"https://doi.org/10.1115/1.4062721","url":null,"abstract":"\u0000 Aluminum has many advantages, such as being lightweight, but it may not provide sufficient wear resistance for some applications. Tantalum oxide is a ceramic-based coating layer that can improve wear resistance. In this study, 2024 aluminum alloy samples with different surface treatments were coated with amorphous Ta2O5 using the RF spraying method under the same conditions. Polishing, 10% HCl solution, 5% NaOH solution, and 50% HNO3 solution, as well as sandblasting, were applied to the surfaces of aluminum alloys separately, and the sample groups were coated. The effects of pre-coating surface treatments on coating morphology and wear resistance were investigated. The surface morphologies of the coatings were examined using scanning electron microscopy, electron dispersion spectroscopy, and X-ray diffraction. Wear tests were then conducted to determine the mechanical properties, and after the tests, scanning electron microscopy examinations and volume loss calculations were performed using a profilometer. The wear test results were discussed and compared. The investigation yielded continuous, homogeneous, and crack-free coatings on the 2024 aluminum alloy surfaces. However, the wear resistance of these coatings was compromised by acid etching. Following polishing and sandblasting, the coated surfaces experienced a decrease in volume losses from abrasion by 4.3% and 44.8%, respectively, compared to the uncoated samples.","PeriodicalId":17586,"journal":{"name":"Journal of Tribology-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44212197","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 shaft scratch on static and transient behavior of water-lubricated bearing 轴划伤对水润滑轴承静态和瞬态性能的影响

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-06-23 DOI: 10.1115/1.4062814

Peng Liang, Xingyang Li, F. Guo, Xiaohan Zhang, Fulin Jiang

引用次数: 1

Dynamic Behavior of a Tilting-pad Thrust Bearing Operating under a Hybrid Lubrication Regime 混合润滑条件下可倾瓦推力轴承的动态特性

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-06-23 DOI: 10.1115/1.4062817

Jefferson Silva Barbosa, A. Cavalini, I. Santos, V. Steffen

引用次数: 0

Experiments and Lattice-Boltzmann Simulation of Flow in a Vertically Aligned Gearbox 垂直排列齿轮箱中流动的实验和格子Boltzmann模拟

IF 2.5 3区工程技术

Journal of Tribology-transactions of The Asme Pub Date : 2023-06-23 DOI: 10.1115/1.4062813

B. Niebles Atencio, H. Yao, V. Chernoray

{"title":"Experiments and Lattice-Boltzmann Simulation of Flow in a Vertically Aligned Gearbox","authors":"B. Niebles Atencio, H. Yao, V. Chernoray","doi":"10.1115/1.4062813","DOIUrl":"https://doi.org/10.1115/1.4062813","url":null,"abstract":"\u0000 This paper presents a study of the oil flow in a vertically arranged FZG gearbox. The splash and churning losses are experimentally evaluated using measurements of the resistance torque. Using high speed imaging, the instantaneous oil splashing inside the gearbox is also presented and compared with Computational Fluid Dynamics (CFD) results from the Lattice-Boltzmann method (LBM), instead of the traditional grid-based finite volume method. Four different configurations, including a spur gear based on the standard FZG geometry and a disc pair wheel-pinion with the same tip diameters of the standard geometries are used. The experiments cover a range from 500 to 3000 rpm and three oil levels are studied. For the CFD simulations, the same oil levels and rotational speeds are used. The experimental results indicate torque differences depending on the oil level and the configuration. The splashing pattern is also different from the standard horizontal FZG case, which is typically studied in the literature. On the other hand, the CFD simulations and flow visualization experiments are in relative agreement with one another. The similarities and differences in the torque values for the different configurations and the splashing pattern for both experiments and CFD simulations are analyzed and discussed.","PeriodicalId":17586,"journal":{"name":"Journal of Tribology-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45518104","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