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Influence of clutch output shaft inertia and stiffness on the performance of the wet clutch
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-3157-4632
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-9110-2819
2013 (English)In: Tribology Transactions, ISSN 1040-2004, E-ISSN 1547-397X, Vol. 56, no 2, p. 310-319Article in journal (Refereed) Published
Abstract [en]

Being a part of the complex mass, spring and damper system in a driveline, the choice of design factors like, output shaft stiffness and inertia of a wet clutch system can influence its performance. The effects of these parameters are experimentally evaluated in this paper. Widely used commercial paper based friction plates with standard steel reaction plates are tested with four different stiffness and inertia combinations in a recently developed wet clutch test rig. A low inertia system in general showed a faster degradation and shorter clutch life for high torsional oscillation. Besides the system becomes more shudder sensitive for lower natural frequency in case of less stiff system. The less stiff output shaft with low inertia showed the highest shudder tendency among the four conditions. The differences in performance for different output shaft conditions become noticeable for numerous clutch engagements or a degraded system. The effect of different shaft design conditions is also illuminated in the topographical analysis of the separators’ surfaces and morphological study of frictional surfaces. This study reveals the influence of both inertia and stiffness not only on shudder sensitivity of the system but also on the clutch frictional performance as well as the overall clutch life.

Place, publisher, year, edition, pages
2013. Vol. 56, no 2, p. 310-319
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-5135DOI: 10.1080/10402004.2012.748236ISI: 000315686900018Scopus ID: 2-s2.0-84878827731Local ID: 327c4fbb-a48c-42ed-ba37-238b093820c4OAI: oai:DiVA.org:ltu-5135DiVA, id: diva2:978009
Note
Validerad; 2013; 20130201 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Fatima, NowshirMarklund, PärLarsson, Roland

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