The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair

A non-Newtonian numerical solution system for the transient thermo-elastohydrodynamic lubrication (TEHL) model has been proposed for a helical gear pair with the finite line contact theory. This model is used to comprehensively show the transient effect, temperature effect, operating condition and t...

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Autores principales:	Mingyong Liu, Yadong Liu, Chenhui Wu
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2018
Materias:	helical gear thermal ehl transient effects operating condition eyring fluid Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/01270fd7383448b4a22e11859907e765
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spelling	oai:doaj.org-article:01270fd7383448b4a22e11859907e7652021-11-05T09:19:16ZThe Transient and Thermal Effects on EHL Performance of a Helical Gear Pair1881-219810.2474/trol.13.81https://doaj.org/article/01270fd7383448b4a22e11859907e7652018-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/13/3/13_81/_pdf/-char/enhttps://doaj.org/toc/1881-2198A non-Newtonian numerical solution system for the transient thermo-elastohydrodynamic lubrication (TEHL) model has been proposed for a helical gear pair with the finite line contact theory. This model is used to comprehensively show the transient effect, temperature effect, operating condition and the non-Newtonian behaviors on the lubricating performance. The results indicate that, the transient effect is insignificant except the area of engaging-in and engaging-out along the line of action (LOA). Besides, due to the pitch point position on the contact line, the temperature distributions in different meshing positions along LOA is significantly differentiated. In the single tooth contact region, the variation of film thickness is delayed for the load variation. By introducing the thermal effect, the film thickness has been reduced and the difference of friction coefficient is significant between the isothermal and thermal model. The effect of input torque and speed is significant for the lubrication performance. As the input torque increases, the squeeze effect has been enhanced during the engaging-in region. Finally, the influence of characteristic shear stress of the Eyring fluid on the pressure and film thickness is negligible. The results indicate that the TEHL model with non-Newtonian fluid predicts more realistic friction coefficient.Mingyong LiuYadong LiuChenhui WuJapanese Society of Tribologistsarticlehelical gearthermal ehltransient effectsoperating conditioneyring fluidPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 13, Iss 3, Pp 81-90 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	helical gear thermal ehl transient effects operating condition eyring fluid Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	helical gear thermal ehl transient effects operating condition eyring fluid Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Mingyong Liu Yadong Liu Chenhui Wu The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair
description	A non-Newtonian numerical solution system for the transient thermo-elastohydrodynamic lubrication (TEHL) model has been proposed for a helical gear pair with the finite line contact theory. This model is used to comprehensively show the transient effect, temperature effect, operating condition and the non-Newtonian behaviors on the lubricating performance. The results indicate that, the transient effect is insignificant except the area of engaging-in and engaging-out along the line of action (LOA). Besides, due to the pitch point position on the contact line, the temperature distributions in different meshing positions along LOA is significantly differentiated. In the single tooth contact region, the variation of film thickness is delayed for the load variation. By introducing the thermal effect, the film thickness has been reduced and the difference of friction coefficient is significant between the isothermal and thermal model. The effect of input torque and speed is significant for the lubrication performance. As the input torque increases, the squeeze effect has been enhanced during the engaging-in region. Finally, the influence of characteristic shear stress of the Eyring fluid on the pressure and film thickness is negligible. The results indicate that the TEHL model with non-Newtonian fluid predicts more realistic friction coefficient.
format	article
author	Mingyong Liu Yadong Liu Chenhui Wu
author_facet	Mingyong Liu Yadong Liu Chenhui Wu
author_sort	Mingyong Liu
title	The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair
title_short	The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair
title_full	The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair
title_fullStr	The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair
title_full_unstemmed	The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair
title_sort	transient and thermal effects on ehl performance of a helical gear pair
publisher	Japanese Society of Tribologists
publishDate	2018
url	https://doaj.org/article/01270fd7383448b4a22e11859907e765
work_keys_str_mv	AT mingyongliu thetransientandthermaleffectsonehlperformanceofahelicalgearpair AT yadongliu thetransientandthermaleffectsonehlperformanceofahelicalgearpair AT chenhuiwu thetransientandthermaleffectsonehlperformanceofahelicalgearpair AT mingyongliu transientandthermaleffectsonehlperformanceofahelicalgearpair AT yadongliu transientandthermaleffectsonehlperformanceofahelicalgearpair AT chenhuiwu transientandthermaleffectsonehlperformanceofahelicalgearpair
_version_	1718444388692000768

The Transient and Thermal Effects on EHL Performance of a Helical Gear Pair

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