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Keywords: gears
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Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2024, 146(11): 114602.
Paper No: TRIB-24-1114
Published Online: August 5, 2024
... modeling approach. This study first examines the influence of gear-induced air flow on gearbox oil flow, focusing on a test gearbox to identify a suitable modeling approach for a truck rear axle transmission. The results indicate that the gear-induced air flow mainly impacts gearbox oil flow at higher...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. September 2024, 146(9): 094101.
Paper No: TRIB-23-1280
Published Online: May 15, 2024
...S. Hutt; A. Clarke; H. P. Evans Lubricated non-conformal contacts, such as between gear teeth, operate with high levels of mixed lubrication, where the amount of direct asperity contact depends on operating parameters that influence the film thickness. Understanding of the levels of surface...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2024, 146(7): 072201.
Paper No: TRIB-23-1321
Published Online: March 25, 2024
...Bernd Morhard; Constantin Paschold; Thomas Lohner; Karsten Stahl Geared turbofans need to withstand loss of lubrication due to inevitable off-design conditions. Additionally, the loss of lubrication specifications that have to be fulfilled are getting stricter. For a loss of lubrication event...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2024, 146(7): 071701.
Paper No: TRIB-23-1346
Published Online: February 26, 2024
...Junichi Hongu; Shunjiro Hattori; Junya Kato; Takao Koide In our previous study, the Matsumoto equation was modified by introducing the directivity of machining marks on the tooth surfaces (directional parameter), and it was adapted to estimate the gear friction coefficient with various finishing...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. May 2024, 146(5): 054601.
Paper No: TRIB-23-1334
Published Online: January 22, 2024
...Yves Johannes Barth; Nadine Sagraloff; Gregor Egger; Thomas Tobie; Karsten Stahl Today, mineral or synthetic oils that are made out of fossil raw materials are the most common lubricants in gear drive applications. Most of them are nonbiodegradable and may pose a risk to the environment...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. March 2024, 146(3): 031701.
Paper No: TRIB-23-1215
Published Online: November 2, 2023
... gears sliding surface roughness and asperities National Natural Science Foundation of China 10.13039/501100001809 52075053 Natural Science Foundation of Jiangxi Province 10.13039/501100004479 20224BAB214042 The planetary roller screw mechanism (PRSM) is the main...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2023, 145(11): 114103.
Paper No: TRIB-23-1043
Published Online: August 29, 2023
... splashing inside the gearbox is also presented and compared to computational fluid dynamics (CFD) results from the lattice-Boltzmann method with the volume of fluid model, instead of the traditional finite volume method. Four different configurations, including a spur gear based on the standard FZG geometry...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2023, 145(10): 101701.
Paper No: TRIB-22-1266
Published Online: May 19, 2023
.... Then, the experimental study is carried out on a power loss test bench. Based on the measured data and multiple linear regression method, the coefficients of the influencing factors are calculated, including gear design parameters, lubrication oil parameters, and operating conditions. To validate the prediction model...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. August 2023, 145(8): 084201.
Paper No: TRIB-22-1449
Published Online: May 12, 2023
...Jin Yang; Tengjiao Lin; Lidong Jiang This paper presents a novel windage power loss (WPL) measurement method for the meshing herringbone gear pair. First, the WPL test rig of the herringbone gear pair is put up, and then the measurement sequence of WPL is described. Second, the WPL of different...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. August 2023, 145(8): 081702.
Paper No: TRIB-23-1041
Published Online: May 12, 2023
... of driving gear at the contact point, u 2 is the tangential speed of driven gear at the contact point, and h is the film thickness. Fig. 2 Surface profile measurement results and the SEM micrograph of the surface damage Surface profile measurement results and the SEM micrograph of the surface...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2022, 144(11): 111602.
Paper No: TRIB-21-1572
Published Online: June 23, 2022
...Qingxiang Meng; Yaping Zhao; Jian Cui; Shibo Mu; Gongfa Li The kinematic-geometric lubrication theory, which combines the results from the elastohydrodynamic lubrication theory and the meshing theory for gearing, is put forward for a line-conjugate gear drive to investigate its global intrinsic...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2022, 144(10): 101202.
Paper No: TRIB-22-1018
Published Online: May 20, 2022
...Jiafu Ruan; Xigui Wang; Yongmei Wang; Chen Li In the process of gear meshing, it is an inevitable trend to encounter failure cases such as contact friction thermal behavior and interface thermoelastic scuffing wear. As one of the cores influencing factors, the gear meshing contact interface micro...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. September 2022, 144(9): 091706.
Paper No: TRIB-21-1540
Published Online: May 3, 2022
... is the overriding factor, the BMG alloy exhibiting the required properties will be selected regardless of composition. With these criteria in place, those alloys with the highest potential for space applications were selected based on thermomechanical mechanism requirements, in this case gears. Although the BMG...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. September 2022, 144(9): 091202.
Paper No: TRIB-21-1525
Published Online: April 5, 2022
...Justino A. O. Cruz; Pedro M. T. Marques; Jorge H. O. Seabra; Jorge D. Castro This work studies the power loss in a real axle box gear transmission under no-load operating conditions. The influence of the rotational speed and of the lubricant viscosity was considered. An experimental strategy...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. August 2022, 144(8): 081201.
Paper No: TRIB-21-1514
Published Online: February 14, 2022
...Sheng Li; Ali Kolivand; Jing Wei This study establishes the critical temperature of scuffing for contacts of gears made of AISI 8620 steel alloy, lubricated by Dexron 6 oil. Through thermal mixed elastohydrodynamic lubrication modeling, experimental scuffing failures are simulated to determine...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071604.
Paper No: TRIB-21-1329
Published Online: February 8, 2022
...Jiang Zhao; Wei Sheng; Zhengminqing Li; Hong Zhang; Rupeng Zhu The relative sliding at the meshing point directly affects the contact and lubrication characteristics of the gear pair and is an important factor of gear wear and power loss. In this study, for investigation of a new type of low...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2022, 144(4): 041201.
Paper No: TRIB-21-1348
Published Online: November 12, 2021
... in the J ournal of T ribology . 28 07 2021 05 10 2021 05 10 2021 12 11 2021 three-body abrasion energy-based model wear comminution ore fragmentation energy efficiency abrasion wheel test abrasion friction gears surface fracture cracking wear As part...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 2022, 144(1): 011603.
Paper No: TRIB-21-1282
Published Online: October 20, 2021
...Junichi Hongu; Ryohei Horita; Takao Koide This study proposes a modification of the Matsumoto equation using a directional parameter of tooth surfaces to adapt various gear finishing processes. The directional parameters of a contact surface, which affect oil film formations, have been discussed...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. February 2022, 144(2): 021705.
Paper No: TRIB-20-1558
Published Online: June 23, 2021
...Yifan Lin; Yangzhi Chen; Changkun Ye; Yueling Lyu Parallel line gear pair (PLGP) can achieve pure rolling meshing along its theoretical contact curves under the ideal condition. However, the actual meshing positions may deviate from the theoretical ones under the actual operating conditions, which...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. March 2022, 144(3): 031602.
Paper No: TRIB-21-1096
Published Online: June 7, 2021
...S. Li; A. Kolivand; A. Anisetti Utilizing a computational approach, this study quantifies the onset of lubrication starvation for line contacts of rough surfaces operating under typical ranges of automotive gearing applications. The response parameter is selected as the critical film thickness...
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