Analysis of bulk temperature field and flash temperature for locomotive traction gear

Song, Ying; Yao, Yupeng; Fei, Jiyou

doi:10.1016/j.applthermaleng.2016.01.093

Cited by 51 publications

(24 citation statements)

References 13 publications

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“…γ denotes the thermal conversion coefficient. β is the heat flux density distribution coefficient, which is given as [39] where λ, ρ and ϲ denote the heat conduction coefficient, material density coefficient and specific heat coefficient, respectively. The subscripts 1 and 2 represent the driving and driven gears, respectively.…”

Section: Bulk Temperaturementioning

confidence: 99%

A Modified Wear Model Considering Contact Temperature for Spur Gears in Mixed Elastohydrodynamic Lubrication

Zhou

Xing

et al. 2020

Tribol Lett

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In this study, a modified wear model considering contact temperature for spur gears in mixed elastohydrodynamic lubrication (EHL) is proposed. The contact temperature consists of bulk temperature and flash temperature. The bulk temperature is determined by the thermal network model, whereas the flash temperature is estimated through the published method. The bulk temperature, which was rarely included in the previous works, substantially has a considerable influence on the tooth wear in mixed EHL. It is also found that the lower contact temperature contributes to the reduction of gear wear depth. Furthermore, the effects of gear basic geometrical parameter and operating parameter on wear depth are investigated. The results show that the wear depth decreases with the increased tooth width, module, pressure angle and rotational velocity but increases with the surface roughness and torque. It indicates that wear resistance of tooth surfaces can be enhanced by optimising the design parameters of gear drives.

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Section: Bulk Temperaturementioning

confidence: 99%

A Modified Wear Model Considering Contact Temperature for Spur Gears in Mixed Elastohydrodynamic Lubrication

Zhou

Xing

et al. 2020

Tribol Lett

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“…t 0 is the time domain contact half width, which can be given in equation (9). p H is the maximum Hertz contact pressure, which can be given by equation (10)…”

Section: Average Friction Heat Flux and Its Influence Factorsmentioning

confidence: 99%

“…A prediction method of the bulk temperature field of the gear system was put forward by Xue et al 8 They also studied the bulk temperature under the condition of modification. The interfacial contact temperature of gear was studied by Li et al 9 The bulk temperature field and the flash temperature of the locomotive traction gear were studied by Shi et al 10 Influence of immersion depth of dip lubricated gears on power loss, bulk temperature, and scuffing load-carrying capacity was studied by Ho¨hn et al 11 In this paper, the bulk temperature field of spur gear was calculated by finite element method based on time-varying meshing stiffness load. 12 The influence of geometrical parameters and the lubrication conditions on the bulk temperature of the gear were also analyzed.…”

Section: Introductionmentioning

confidence: 99%

Influence factors on bulk temperature field of gear

Luo

2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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The convective heat transfer coefficient of different tooth surfaces and the friction heat flux were identified based on the theory of tribology, heat transfer, and gear meshing theory. A more accurate parametric model of finite element thermal analysis of a single tooth was established by using APDL and the more accurate bulk temperature field of the gear was obtained. The factors that affect the bulk temperature field of gears were also analyzed, and the influence mechanism of each factor was carried out. The results show that high-pressure angle and tooth profile modification cannot only effectively reduce the bulk temperature of the gear, but also benefits the distribution of the bulk temperature. Long-addendum gear is beneficial to the distribution of the bulk temperature. The bulk temperature is proportional to the initial temperature of the lubricating oil. The variations of the equivalent curvature radius, the stiffness and the load sharing ratio of the meshing point are the ultimate cause of the change of the bulk temperature. The results of this paper can provide a more accurate and practical method for obtaining the bulk temperature of the gear, and it also can provide a theoretical basis and method to improve the thermal behavior of gears.

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“…With the gradual improvement of numerical analysis methods, simulation analysis has become a high-efficiency and low-cost research method. Using simulation analysis methods, Shi et al [13] obtained the steady temperature field and tooth surface flash temperature of the gear through simulation analysis. Fernandes et al [14] used the finite element method to construct a gear finite model of the bulk temperature and flash temperature.…”

Section: Introductionmentioning

confidence: 99%

Temperature Field Simulation and Experimental Study of Anti-backlash Single-Roller Enveloping Hourglass Worm Gear

Wang

Deng

2020

Chin. J. Mech. Eng.

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In gear transmission, temperature rise has a non-negligible impact on the accuracy, noise and transmission efficiency. However, there is no relevant research on the temperature rise of the anti-backlash single-roller enveloping hourglass worm (ASEHW) gear. To solve this problem, based on tribology principle and Hertz contact theory, the thermal power calculation method of the ASEHW gear was proposed for the first time and thermal analysis was carried out by Ansys software. The bulk temperature of the ASEHW gear under four different rotating speed (300 r/min, 600 r/min, 900 r/ min, 1200 r/min) is calculated. The main factors causing temperature rise of the ASEHW gear are analyzed theoretically. Meanwhile, an experimental study is performed to verify the simulation results and validate the theory methods. The theory presented in this paper provides a solution for the thermal power calculation of ASEHW gear. This research provides a theoretical basis for further optimization of ASEHW gear.

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Analysis of bulk temperature field and flash temperature for locomotive traction gear

Cited by 51 publications

References 13 publications

A Modified Wear Model Considering Contact Temperature for Spur Gears in Mixed Elastohydrodynamic Lubrication

A Modified Wear Model Considering Contact Temperature for Spur Gears in Mixed Elastohydrodynamic Lubrication

Influence factors on bulk temperature field of gear

Temperature Field Simulation and Experimental Study of Anti-backlash Single-Roller Enveloping Hourglass Worm Gear

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