Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction

The transient hydrodynamic lubrication model of tilting pad journal bearings (TPJBs) was established by the computational fluid dynamics (CFD) method and the self-developed dynamic grid program. The fluid-structure interaction between the flow field and the rotor motion, the pads rotations was reali...

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Autores principales:	Q. Li, X. H. Tang, S. Zhang, Y. J. Wang, W. W. Xu, Z. B. Wang
Formato:	article
Lenguaje:	EN
Publicado:	Isfahan University of Technology 2021
Materias:	tilting pad journal bearings; transient model; fluid-structure interaction; dynamic response; computational fluid dynamic (cfd); dynamic grid. Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/42bafc8a2ed04eaf8bb468ecb898297b
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id	oai:doaj.org-article:42bafc8a2ed04eaf8bb468ecb898297b
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spelling	oai:doaj.org-article:42bafc8a2ed04eaf8bb468ecb898297b2021-11-13T07:03:04ZDynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction1735-3572https://doaj.org/article/42bafc8a2ed04eaf8bb468ecb898297b2021-01-01T00:00:00Zhttp://jafmonline.net/JournalArchive/download?file_ID=57325&issue_ID=1015https://doaj.org/toc/1735-3572The transient hydrodynamic lubrication model of tilting pad journal bearings (TPJBs) was established by the computational fluid dynamics (CFD) method and the self-developed dynamic grid program. The fluid-structure interaction between the flow field and the rotor motion, the pads rotations was realized. The feasibility of the model is proved by comparing with the experimental data. The dynamic response of TPJBs under the various unbalance, the loading modes and the rotating speeds was studied. The dynamic response of TPJBs is further analyzed through a research of the relationships among the shaft whirl orbits, transient force acting on the shaft, rotation angles of the pads and transient oil film force of the pads. With the increase of unbalance, the whirl orbits expand and whirl orbits centers rise continuously. The whirl orbits and orbit center attitude angles of TPJBs are smaller than those of fixed-pad journal bearings. Compare with the load between pads, the whirl orbits are smaller and whirl orbits centers drop slightly under the load on pads. With the increase of rotating speed, the whirl orbits expand nonlinearly, whirl orbit center rises nonlinearly. The transient force acting on the shaft, the rotation angles of the pads and the transient oil film force of the pads change periodically, and the period and frequency of these changes are the same as that of the shaft rotation. The maximum force acting on the shaft appear before the maximum shaft center position (the vertexes of the whirl orbit).Q. LiX. H. TangS. ZhangY. J. WangW. W. XuZ. B. WangIsfahan University of Technology articletilting pad journal bearings; transient model; fluid-structure interaction; dynamic response; computational fluid dynamic (cfd); dynamic grid.Mechanical engineering and machineryTJ1-1570ENJournal of Applied Fluid Mechanics, Vol 14, Iss 6, Pp 1827-1837 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tilting pad journal bearings; transient model; fluid-structure interaction; dynamic response; computational fluid dynamic (cfd); dynamic grid. Mechanical engineering and machinery TJ1-1570
spellingShingle	tilting pad journal bearings; transient model; fluid-structure interaction; dynamic response; computational fluid dynamic (cfd); dynamic grid. Mechanical engineering and machinery TJ1-1570 Q. Li X. H. Tang S. Zhang Y. J. Wang W. W. Xu Z. B. Wang Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction
description	The transient hydrodynamic lubrication model of tilting pad journal bearings (TPJBs) was established by the computational fluid dynamics (CFD) method and the self-developed dynamic grid program. The fluid-structure interaction between the flow field and the rotor motion, the pads rotations was realized. The feasibility of the model is proved by comparing with the experimental data. The dynamic response of TPJBs under the various unbalance, the loading modes and the rotating speeds was studied. The dynamic response of TPJBs is further analyzed through a research of the relationships among the shaft whirl orbits, transient force acting on the shaft, rotation angles of the pads and transient oil film force of the pads. With the increase of unbalance, the whirl orbits expand and whirl orbits centers rise continuously. The whirl orbits and orbit center attitude angles of TPJBs are smaller than those of fixed-pad journal bearings. Compare with the load between pads, the whirl orbits are smaller and whirl orbits centers drop slightly under the load on pads. With the increase of rotating speed, the whirl orbits expand nonlinearly, whirl orbit center rises nonlinearly. The transient force acting on the shaft, the rotation angles of the pads and the transient oil film force of the pads change periodically, and the period and frequency of these changes are the same as that of the shaft rotation. The maximum force acting on the shaft appear before the maximum shaft center position (the vertexes of the whirl orbit).
format	article
author	Q. Li X. H. Tang S. Zhang Y. J. Wang W. W. Xu Z. B. Wang
author_facet	Q. Li X. H. Tang S. Zhang Y. J. Wang W. W. Xu Z. B. Wang
author_sort	Q. Li
title	Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction
title_short	Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction
title_full	Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction
title_fullStr	Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction
title_full_unstemmed	Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction
title_sort	dynamic response analysis of tilting pad journal bearing considering fluid-structure interaction
publisher	Isfahan University of Technology
publishDate	2021
url	https://doaj.org/article/42bafc8a2ed04eaf8bb468ecb898297b
work_keys_str_mv	AT qli dynamicresponseanalysisoftiltingpadjournalbearingconsideringfluidstructureinteraction AT xhtang dynamicresponseanalysisoftiltingpadjournalbearingconsideringfluidstructureinteraction AT szhang dynamicresponseanalysisoftiltingpadjournalbearingconsideringfluidstructureinteraction AT yjwang dynamicresponseanalysisoftiltingpadjournalbearingconsideringfluidstructureinteraction AT wwxu dynamicresponseanalysisoftiltingpadjournalbearingconsideringfluidstructureinteraction AT zbwang dynamicresponseanalysisoftiltingpadjournalbearingconsideringfluidstructureinteraction
_version_	1718430250779541504

Dynamic Response Analysis of Tilting Pad Journal Bearing Considering Fluid-Structure Interaction

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