Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings

Cavitation has a potential effect on the performance of full circle journal bearings. This paper studied the effects of cavitation on steadily loaded journal bearings, with the purpose of analyzing the necessity of adopting a mass-conserving model for ordinary journal bearings. The Christopherson’s...

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Autores principales:	Wanjun Xu, Shanhui Zhao, Yaoyao Xu, Kang Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cavitation JFO theory Elrod algorithm Reynolds boundary condition journal bearing Science Q
Acceso en línea:	https://doaj.org/article/c81cf7f948d54d1788617831f6757c28
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spelling	oai:doaj.org-article:c81cf7f948d54d1788617831f6757c282021-11-25T18:11:55ZReynolds Model versus JFO Theory in Steadily Loaded Journal Bearings10.3390/lubricants91101112075-4442https://doaj.org/article/c81cf7f948d54d1788617831f6757c282021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4442/9/11/111https://doaj.org/toc/2075-4442Cavitation has a potential effect on the performance of full circle journal bearings. This paper studied the effects of cavitation on steadily loaded journal bearings, with the purpose of analyzing the necessity of adopting a mass-conserving model for ordinary journal bearings. The Christopherson’s method and Elrod cavitation algorithm were implemented to represent the non-mass-conserving Reynolds model and the mass-conserving Jakobsson-Floberg-Olsson (JFO) theory, respectively. The difference in the oil film reformation boundaries predicted by the two methods was focused on. The typical performance parameters including oil film pressure, load-carrying capacity, attitude angle, friction force, and leakage were comprehensively compared. The results show that the load-carrying capacity is improved by the decrease in cavitation pressure, and the effect is significant in lightly loaded cavitated bearings. In non-cavitated cases and the cavitated cases with intermediate and heavy loads, the difference between the Reynolds model and the JFO theory can be effectively ignored, but the accuracy of the leakage predicted using the Reynolds model should be carefully evaluated.Wanjun XuShanhui ZhaoYaoyao XuKang LiMDPI AGarticlecavitationJFO theoryElrod algorithmReynolds boundary conditionjournal bearingScienceQENLubricants, Vol 9, Iss 111, p 111 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cavitation JFO theory Elrod algorithm Reynolds boundary condition journal bearing Science Q
spellingShingle	cavitation JFO theory Elrod algorithm Reynolds boundary condition journal bearing Science Q Wanjun Xu Shanhui Zhao Yaoyao Xu Kang Li Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings
description	Cavitation has a potential effect on the performance of full circle journal bearings. This paper studied the effects of cavitation on steadily loaded journal bearings, with the purpose of analyzing the necessity of adopting a mass-conserving model for ordinary journal bearings. The Christopherson’s method and Elrod cavitation algorithm were implemented to represent the non-mass-conserving Reynolds model and the mass-conserving Jakobsson-Floberg-Olsson (JFO) theory, respectively. The difference in the oil film reformation boundaries predicted by the two methods was focused on. The typical performance parameters including oil film pressure, load-carrying capacity, attitude angle, friction force, and leakage were comprehensively compared. The results show that the load-carrying capacity is improved by the decrease in cavitation pressure, and the effect is significant in lightly loaded cavitated bearings. In non-cavitated cases and the cavitated cases with intermediate and heavy loads, the difference between the Reynolds model and the JFO theory can be effectively ignored, but the accuracy of the leakage predicted using the Reynolds model should be carefully evaluated.
format	article
author	Wanjun Xu Shanhui Zhao Yaoyao Xu Kang Li
author_facet	Wanjun Xu Shanhui Zhao Yaoyao Xu Kang Li
author_sort	Wanjun Xu
title	Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings
title_short	Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings
title_full	Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings
title_fullStr	Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings
title_full_unstemmed	Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings
title_sort	reynolds model versus jfo theory in steadily loaded journal bearings
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c81cf7f948d54d1788617831f6757c28
work_keys_str_mv	AT wanjunxu reynoldsmodelversusjfotheoryinsteadilyloadedjournalbearings AT shanhuizhao reynoldsmodelversusjfotheoryinsteadilyloadedjournalbearings AT yaoyaoxu reynoldsmodelversusjfotheoryinsteadilyloadedjournalbearings AT kangli reynoldsmodelversusjfotheoryinsteadilyloadedjournalbearings
_version_	1718411523137732608

Reynolds Model versus JFO Theory in Steadily Loaded Journal Bearings

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