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Dynamics of a Jeffcott rotor with rigid blades rubbing against an outer ring
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0001-6016-6342
2012 (English)In: Chaotic Modeling and Simulation (CMSIM), ISSN 2241-0503, E-ISSN 2241-0503, 643-650 p.Article in journal (Other academic) Published
Abstract [en]

The non-linear behaviour of rub-impact systems have been studied recentlyby approximating rotor-stator systems as rubbing cylinders. In reality, therotor shape is more complex, resulting in richer dynamics over smaller parameter ranges. In this paper, a bladed turbine is modelled using a Jeffcott rotor with three rigid beams attached to the mass center. The contact forces are described by a radial restoring force induced by the massless outer ring, and a tangential Coulomb frictional force. The results are presented in bifurcation diagrams and compared with a previous model described by three flexible beams entering in contact with a fixed ring assuming large displacement beam theory. This paper shows that the two models described give similarities in the overall bifurcation diagram, only showing greater differences in localized frequency ranges.

Place, publisher, year, edition, pages
2012. 643-650 p.
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-34220Local ID: 85b4c747-40c5-417c-83c2-cf4cd5397f36OAI: oai:DiVA.org:ltu-34220DiVA: diva2:1007470
Conference
International Conference on Chaotic Modeling, Simulation and Applications : 12/06/2012 - 15/06/2012
Note
Godkänd; 2012; 20121217 (flothi); Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-06-29Bibliographically approved

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http://www.cmsim.eu/papers_pdf/october_2012_papers/10_CMSIM_2012_Thiery_Aidanpaa_4_643-650.pdfhttp://www.cmsim.eu/October_2012_issue.html

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Thiery, FlorianAidanpää, Jan-Olov
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