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Dynamics of rotor systems with clearance and weak pedestals in full contact
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
2010 (English)In: 13th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery 2010 (ISROMAC-13): Honolulu, Hawaii, USA, 4 - 7 April 2010, Red Hook, NY: Curran Associates, Inc., 2010, 531-536 p.Conference paper (Refereed)
Abstract [en]

Many rotating machineries are supported by bearings with clearance, which are further clamped in, compared to the bearing stiffness, weak pedestals. As have been reported in several studies, it is essential to choose a proper clearance in order to avoid unwanted vibrations. When rotating machineries supported by bearings with clearance are subjected to stationary loads (gravity, magnetic pull etc.), it may not loose contact between the shaft and the bearing (i.e. full contact). However, even in full contact unwanted dynamics can occur which is of interest in this paper. It is found that the clearance give raise to anisotropic pedestal stiffness. It is further shown that some of the resonance frequencies decrease with the clearance.

Place, publisher, year, edition, pages
Red Hook, NY: Curran Associates, Inc., 2010. 531-536 p.
Keyword [en]
Engineering mechanics - Other engineering mechanics
Keyword [sv]
Fasteass, Teknisk mekanik - Övrig teknisk mekanik
Research subject
Computer Aided Design
URN: urn:nbn:se:ltu:diva-34051Local ID: 826f17b0-3a44-11df-a0f4-000ea68e967bISBN: 9781617388484OAI: diva2:1007300
International Symposium on Transport Phenomena and Dynamics of Rotating Machinery : 03/04/2010 - 07/04/2010
Fastelaboratoriet - VINNEXC
Godkänd; 2010; 20100328 (magkar)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Karlberg, MagnusKarlsson, MartinKarlsson, LennartNäsström, Mats
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