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Rotordynamic effects of adding spherical roller thrust bearing stiffness components to fiber refiner models
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-2342-1647
2008 (English)In: ISROMAC-12: the Twelfth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery ; Honolulu, Hawaii, February 17 - 22 nd, 2008 / Pacific Center of Thermal-Fluids Engineering, Honolulu, 2008Conference paper, Published paper (Refereed)
Abstract [en]

One key component in panelboard production is the fiber refiner which grinds cellulose woodchips into slender fibers. Current fiber refiners are rotating machines where the grinding takes place between a stator and a rotor. The rotor can be supported by preloaded spherical roller thrust bearings (SRTB) which for simplicity are often modeled as springs with radial stiffness. However, a more detailed analysis of these bearings shows that other stiffness components are also present. Thus, the aim of this paper is to show how dynamic properties change as such stiffness components are introduced.The SRTB stiffness matrix is derived from a simplified finite element model. This derived stiffness matrix is then used in another rotordynamic model. Campbell diagrams show that these additional stiffness components influence the eigenfrequencies in such a way that they should be considered when analyzing fiber refiners.

Place, publisher, year, edition, pages
Honolulu, 2008.
National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
URN: urn:nbn:se:ltu:diva-27329Local ID: 0bf17c40-dff1-11dc-9e29-000ea68e967bOAI: oai:DiVA.org:ltu-27329DiVA, id: diva2:1000512
Conference
International Symposium on Transport Phenomena and Dynamics of Rotating Machinery : 17/02/2008 - 22/02/2008
Projects
Fastelaboratoriet - VINNEXC
Note
Godkänd; 2008; Bibliografisk uppgift: CD-ROM; 20080220 (magkar)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Citation style
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  • asciidoc
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