Article
Chemistry, Multidisciplinary
Qin Wang, Jinke Jiang, Hua Chen, Junwei Tian, Yu Su, Junde Guo
Summary: An approach of ease-off flank modification for hypoid gears was proposed to improve the meshing performance of automobile drive axle. By optimizing the minimum amplitude of loaded transmission error, the best ease-off deviations were determined to improve the drive performance.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Ignacio Gonzalez-Perez, Alfonso Fuentes-Aznar
Summary: This paper proposes an analytical approach to determine the gear tooth surfaces for hypoid gears directly from their pitch cones, based on the condition of exact generation. A numerical example demonstrates the effectiveness of the proposed methodology in a high reduction hypoid gear drive, minimizing contact pressure through the application of optimum tip relief.
MECHANISM AND MACHINE THEORY
(2023)
Article
Engineering, Mechanical
Yu Zhang, Zhiyong Wang, Hongzhi Yan
Summary: An optimization method to reduce wear in hypoid gears by minimizing the pinion sliding ratio is proposed. The sliding ratio model of the hypoid gear is established based on spatial gear meshing theory. The optimization objective is to minimize the sum of absolute sliding ratios of 34 meshing points on the pinion tooth surfaces. Results show significant reductions in sliding ratios and temperature in the optimized gear pair.
JOURNAL OF MECHANICAL DESIGN
(2023)
Article
Engineering, Manufacturing
Vilmos V. Simon
Summary: A new method for advanced manufacture of hypoid gears on numerical controlled machine tool is presented, aiming to reduce tooth contact stresses, angular displacement errors, and energy losses in the oil film. The application of optimal machining process led to significant reductions in stresses and errors, as well as moderate reduction in energy losses, improving the operating characteristics of the hypoid gear pair.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2021)
Article
Engineering, Mechanical
Fangyan Zheng, Jun Zhang, Ligang Yao, Rulong Tan
Summary: Recent studies have shown that proper cutter modification can enhance the wear resistance of gears, reducing wear and increasing the gear's lifespan.
Article
Engineering, Electrical & Electronic
Eugeniu Grabovic, Alessio Artoni, Marco Gabiccini, Massimo Guiggiani, Lorenza Mattei, Francesca Di Puccio, Enrico Ciulli
Summary: A correct methodology for evaluating friction coefficient in lubricated gear pairs is crucial for estimating energy losses and predicting wear. This paper first presents a semi-empirical formulation for estimating the coefficient of friction and applies it to analyze mechanical efficiency losses in a hypoid gearset. A simulated wear investigation based on the Archard model is then conducted, with a focus on the impact of frequency of updating worn geometry on tribological outcomes.
Article
Engineering, Mechanical
Shengnan Zhang, Zhili Sun, Fanyi Guo
Summary: The study found that under minimum quantity lubrication, the wear depth of involute modified gears is not minimum, and the point of minimum wear is at the minimum sliding point. The maximum wear depth of the wheel is between the dedendum and the pitch line, with the lowest surface roughness.
Article
Polymer Science
Christoph Herzog, Michael Wolf, Dietmar Drummer
Summary: The wear behavior of PBT-steel gear sets under temporarily changed load has been investigated using an in situ gear test rig. The results show that the applied load spectrum determines the resulting tooth flank wear, and the load history also plays an important role in the wear behavior.
Article
Engineering, Mechanical
Dharmender Jangra, Harish Hirani, Ashish K. Darpe
Summary: This study explores the accelerated gear failures caused by geometric stress concentration induced by misalignment. A mathematical model using MATLAB is derived to assess the effects of misalignment on sliding wear of driver gears. The accuracy of the model is validated through literature and experiments. A parametric study investigates the impact of design parameters on wear in combined misaligned gear pairs. Findings show that radial misalignment increases pressure and sliding wear in the single-tooth contact zone, axial misalignment decreases the contact zone and leads to increased wear throughout the mesh cycle, and angular misalignment reduces the contact zone and results in non-linear wear distribution along the tooth flank. Combined misalignment has the most severe effects, causing higher contact pressure, non-linear wear distribution, and increased wear in transition zones.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Metallurgy & Metallurgical Engineering
Shun-xing Wu, Hong-zhi Yan, Zhi-yong Wang, Ren-gui Bi, Zhi Chen, Peng-fei Zhu
Summary: In this study, synchronous cutting of concave and convex surfaces for hypoid gear was achieved using the duplex helical method. A tooth surface error correction model was established and corrections were made using the Levenberg-Marquard algorithm with trust region strategy and least square method. Experimental results showed that the algorithm had good accuracy in reducing tooth surface errors.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Engineering, Mechanical
Pavol Svec, Miroslav Bosansky, Ernest Gondar, Frantisek Toth, Roman Protasov
Summary: The study investigated the wear of nonstandard involute gears with AlCrN and CrAlSiN coatings by Niemann testing, revealing nonuniform wear patterns and different behaviors of coatings on tooth face and pitch.
Article
Engineering, Mechanical
Ye Zhou, Caichao Zhu, Huaiju Liu, Houyi Bai, Xiaona Xu
Summary: The study investigates the effects of rolling-sliding and mild wear on contact fatigue behavior, finding that in rolling-sliding contact, the fatigue life is significantly lower compared to pure rolling due to an increase in the number and amplitude of stress microcycles. Mild wear tends to smooth the surface, subsequently reducing stress concentration, stress cycles, and the risk of surface contact fatigue.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
Article
Engineering, Mechanical
Shifeng Rong, Jiange Zhang, Xing Zhang, Keliang Li, Kaibin Rong, Zhenyu Zhou, Han Ding
Summary: This article proposes a data-driven dry cutting tool collaborative optimization model to improve the economic and environmental attributes of facehobbing hypoid gears. An innovative ease-off tooth contact analysis method is introduced to establish accurate relations between ease-off flank and loaded contact performance evaluations. The proposed model significantly improves sustainability in terms of economic and environmental assessments.
MECHANISM AND MACHINE THEORY
(2024)
Article
Polymer Science
Mert Safak Tunalioglu, Bekir Volkan Agca
Summary: Plastic gears are widely used in various industries for their silent operation, corrosion resistance, and lightweight and cost-effective characteristics. This study focused on the wear resistance of plastic spur gears produced by the Fused Deposition Modeling (FDM) method. Wear tests were conducted on gears made of different thermoplastic polymer materials, and it was found that PETG showed the highest wear resistance.
Article
Materials Science, Multidisciplinary
Jinzhao Ren, Huiqun Yuan
Summary: Surface wear is a major failure mode of gear systems, leading to other gear damages and potentially causing sudden failure of gearbox transmission systems. Monitoring gear wear and predicting its propagation can provide significant cost and safety benefits to industries. This paper introduces a dynamic wear prediction model that quantitatively investigates the interaction effects between surface wear and gear vibration.
Article
Engineering, Mechanical
J. Hong, D. Talbot, A. Kahraman
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2016)
Article
Engineering, Mechanical
D. Talbot, A. Kahraman, A. W. Stilwell, A. Singh, I. Napau
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2016)
Article
Engineering, Mechanical
D. Talbot, A. Sun, A. Kahraman
JOURNAL OF MECHANICAL DESIGN
(2016)
Article
Engineering, Mechanical
J. Hong, D. Talbot, A. Kahraman
JOURNAL OF MECHANICAL DESIGN
(2016)
Article
Engineering, Mechanical
Hyun Sik Kwon, Ahmet Kahraman
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2016)
Article
Engineering, Mechanical
D. Talbot, A. Kahraman, S. Li, A. Singh, H. Xu
TRIBOLOGY TRANSACTIONS
(2016)
Article
Engineering, Manufacturing
Michael Benatar, David Talbot, Ahrnet Kahraman
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
(2017)
Article
Engineering, Manufacturing
Venkatakrishna Janakiraman, Ahmet Kahraman, David Talbot
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
(2017)
Proceedings Paper
Engineering, Mechanical
Brian Anichowski, Ahmet Kahraman, David Talbot
PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2017, VOL 10
(2017)
Proceedings Paper
Engineering, Mechanical
Yong Hu, David Talbot, Ahmet Kahraman
PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2017, VOL 10
(2017)
Proceedings Paper
Engineering, Mechanical
J. Moss, A. Kahraman, C. Wink
PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2017, VOL 10
(2017)
Proceedings Paper
Engineering, Mechanical
J. Polly, David Talbot, Ahmet Kahraman, Avinash Singh, Hai Xu
PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2017, VOL 10
(2017)
Proceedings Paper
Engineering, Mechanical
David Talbot, Ahmet Kahraman
INTERNATIONAL CONFERENCE ON GEARS 2017/ INTERNATIONAL CONFERENCE ON GEAR PRODUCTION/ INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE PLASTIC GEARS 2017, VOLS 1 AND 2
(2017)
Proceedings Paper
Engineering, Mechanical
Ahmet Kahraman, Hans Ligata
INTERNATIONAL CONFERENCE ON GEARS 2017/ INTERNATIONAL CONFERENCE ON GEAR PRODUCTION/ INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE PLASTIC GEARS 2017, VOLS 1 AND 2
(2017)
Proceedings Paper
Engineering, Mechanical
B. Boguski, A. Kahraman
INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 10
(2016)
Article
Engineering, Mechanical
Yankui Song, Ke Xiao, Guo Xiang
Summary: The novelty of this study lies in constructing an Entropy-based wear and fluid-solid-thermal (FST) coupled model for journal bearings, and revealing the transient interaction behavior between wear evolution and FST evolution during repeated starting and stopping. The wear rate is measured experimentally, and the contact temperature, friction coefficient and normal contact force are obtained from the validated FST model. Wear tests and numerical calculations are conducted to validate the predicted wear rate and investigate the time-varying wear and FST evolution of journal bearings.
Article
Engineering, Mechanical
Xin-long Liu, Xin Guan, Yuan Zhong, Qian Xiao, Yong Cao, Wu-lue Zhang, Song Zhang, Yi-ting Zheng, Ming-sheng Gao, Dao-yun Chen, Wen-bin Yang
Summary: Gaps in the conductor rail joints of intercity trains have an impact on current transmission and the wear of carbon skateboards. These gaps decrease the coefficient of friction, increase electrical contact resistance, and affect the wear rate of carbon skateboards.
Article
Engineering, Mechanical
Yuhang Wu, Conglin Dong, Xiuqin Bai, Chengqing Yuan
Summary: The study developed a new composite material by incorporating hexagonal boron nitride (h-BN) particles into a thermoplastic polyurethane (TPU) matrix, which exhibited excellent self-lubricating properties and reduced frictional excitation forces. The addition of h-BN particles effectively reduced the coefficient of friction, decreased fluctuation amplitude, enhanced wear resistance, and attenuated vibration behaviors.
Article
Engineering, Mechanical
Tiancheng Ouyang, Xiuyang Sun, Wentao Tang, Yinxuan Li, Zhi Qun Tian, Yanzhou Li
Summary: By adding nitrogen-doped graphene and C60 nanoparticles to the lubricant, a highly efficient nano-lubricant with vibration and noise reduction properties is synthesized.
Article
Engineering, Mechanical
Xin Zhuo, Jun Cao, Haibo Huang, Li Liu, Xinkun Suo, Peiqing Ye, Zeshan Abbas
Summary: A polymer coating prepared by liquid spraying technology on the surface of 20CrMo steel demonstrates good tribological and anti-cavitation erosive properties. It can effectively replace CuPb24Sn copper alloy in valve plates for pumps under different lubrication conditions. The coating exhibits adhesive wear and reduces frictional loss, and mainly shows abrasive wear under complex working conditions. Its lipophilicity, high hardness to elastic modulus ratio, and corrosion resistance are the main influencing factors for its performance.
Article
Engineering, Mechanical
Md. Aminul Islam, Jiaren (Jimmy) Jiang, Yongsong Xie
Summary: Erosion-corrosion is a major factor in material loss and reduced useful life of hydro-transport equipment. This study evaluates the erosion-corrosion characteristics of different materials and finds that matrix wear affects the degradation of carbides. Sufficient wear and corrosion resistance in the surrounding matrix are important for good erosion-corrosion resistance.
Article
Engineering, Mechanical
Andre Dubois, Oussama Filali, Laurent Dubar
Summary: This study investigates the effect of surface roughness, contact pressure, and lubrication on the onset of galling in aluminum 6082-T6 using a pin-on-plate tribometer. The experimental results show that the roughness and lubricants play a significant role in preventing galling.
Article
Engineering, Mechanical
Jizhan Wu, Peitang Wei, Guoqiang Liu, Difa Chen, Xiuhua Zhang, Taimin Chen, Huaiju Liu
Summary: This study conducted a comprehensive evaluation of the DLC coating treatment on the loading capacity of gears and characterized the surface features and fatigue performance. The results demonstrate that DLC coating significantly improves the hardness and surface residual compressive stress of the gears, as well as enhances their contact fatigue performance.
Article
Engineering, Mechanical
Yangping Liu, Hwaran Lee, Annsley Mace, Jeremy L. Gilbert
Summary: An AFM-based single asperity tribology method was used to investigate the wear performance of carbides and base metal matrix in high carbon CoCrMo alloy. The wear behavior of the two types of carbides was stress-dependent and influenced by chemical composition. Cr-rich carbides exhibited higher wear resistance compared to Mo-rich carbides.
Article
Engineering, Mechanical
Zdenek Riha, Michal Zelenak, Akash Nag, Jakub Poloprudsky, Tomas Kruml, Sergej Hloch
Summary: This study investigates the erosion performances of a high-speed modulated jet (MWJ) and continuous water jet (CWJ). By comparing different nozzles and water jet powers, the effects of modulated and continuous jets on aluminum alloy were studied. The results show that under certain conditions, modulated jet can create deeper and sharper grooves while reducing the impact of lateral flow.
Article
Engineering, Mechanical
Chunyu Yu, Weipu Li, Yang Guo, Xianbin Sun, Fanli Hong, Ning Sun, Qinghai Zhang
Summary: This study explores the relationship between the wear rate of train brake pads and its features, and proposes a method for predicting the wear rate suitable for small sample data. Grey relational analysis and Pearson correlation analysis are used to determine the preferred features that affect the wear rate, and a BOA-BP model is established for prediction. The results show that BOA-BP exhibits better advantages in prediction with small samples.
Article
Engineering, Mechanical
Shan Yin, Xin Zhao, Shuangchao Huang, Zefeng Wen, Xuesong Jin
Summary: This study simulated the rolling contact of a driving wheelset over tangent and curved tracks at a speed up to 500 km/h using an explicit finite element approach to derive creep curves. The comparison between quasi-steady curves and transient curves in the presence of rail corrugation helped to identify cases where traditional theories are inapplicable and where transient effects must be considered. Additionally, the study further analyzed the influence of middle/high-frequency vibrations in the presence of rail corrugation.
Article
Engineering, Mechanical
Jiyao Zhang, Yuanlie Yu, Junlei Tang, Yingying Wang, Honggang Sun, Kaikai Song, Jianhong Gong, Pingping Liu, Xiaoming Liu, Lina Hu, Parthiban Ramasamy, Juergen Eckert
Summary: The influence of high-carbon addition on the microstructure, hardness, and wear behavior of CoCrNi alloy was investigated. It was found that the addition of carbon resulted in the formation of carbide particles, enhancing the hardness and improving the wear resistance. Fracture and detachment of hard carbides during friction introduced additional abrasive particles, transitioning the wear mechanism from adhesive-dominated to abrasive-dominated.
Article
Engineering, Mechanical
Yanfei Liu, Shengtao Yu, Ruize Zhang, Xiangyu Ge, Wenzhong Wang
Summary: This study reports the tribological behavior of nanodiamond plate (NDPL) as a nanoadditive for the first time and compares it with nanodiamond particles (NDPA). The results show that NDPL provides better lubrication performance at higher concentrations, and the sliding between NDPLs and the structural transformation from sp3 to sp2 carbon play a crucial role in lubrication and wear resistance.