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Forced Response of a Vertical Rotor with Tilting Pad Bearings
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
Vattenfall Research & Development.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0001-6016-6342
2016 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

This paper evaluates how tilting pad bearings can aect the forced response of a vertical rotor. Thestiness and damping for a tilting pad bearing is dependent on the position in the bearing (load on pador load between pad) and the magnitude of the load. In a vertical machine the position of the shaft inthe bearing will change for each time-step and produce a periodic stiness and damping. This periodicstiness has shown to produce higher frequency components depending on the number of pads. For thefour pad bearing considered in this paper these frequency components are 3 and 5 in the stationarycoordinate system. The aim of this study is to evaluate if the periodic coecients in the bearing couldexcite the system and cause resonance problems. It is found that for high loads the system can be exciteddue to the bearing dynamics at =!n = 0:33 and =!n = 0:2. However at low loads this eect isnegligible.

Place, publisher, year, edition, pages
2016.
National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
URN: urn:nbn:se:ltu:diva-28414Local ID: 233633f9-8215-4b99-8163-06917fa7afdaOAI: oai:DiVA.org:ltu-28414DiVA, id: diva2:1001611
Conference
International Symposium on Transport Phenomena and Dynamics of Rotating Machinery : 10/04/2016 - 15/04/2016
Note
Godkänd; 2016; 20160516 (erisyn)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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http://isromac-isimet.univ-lille1.fr/upload_dir/finalpaper/124.Finalpaper_ErikSynnegard.pdf

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Synnegård, ErikAidanpää, Jan-Olov
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • vancouver
  • Other style
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  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
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  • asciidoc
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