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Fretting fatigue of a shrink-fit pin subjected to rotating bending: Experiments and simulations
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0001-6896-1834
2009 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 31, no 10, 1559-1570 p.Article in journal (Refereed) Published
Abstract [en]

Fretting fatigue initiation was studied for a shrink-fit pin at rotating bending. Eight assemblies with four different grips were manufactured from soft normalized steel and tested at loads well below bending endurance. All pins displayed rust-red fretting oxides deep into the contact and black oxidised fretting scars with fretting fatigue cracks at the rim. The slip evolution was simulated in a three-dimensional FE model including assembly, bending and sufficiently many rotations to reach a steady-state. The extension of cyclic slip agreed with the black oxidised scar. Deeper into the contact a monotonic slip developed to the positions with rust-red oxides. Asymmetric slip and traction on the interface sides together with a slight twist of the pin in the hub and the slip development process, illustrated that a three-dimensional analysis was required for the interface. Both the stress amplitude and the Findley multi-axial criterion predicted fretting fatigue of the pin although the rotating bend stress was well below the endurance limit.

Place, publisher, year, edition, pages
2009. Vol. 31, no 10, 1559-1570 p.
Keyword [en]
Fretting fatigue, Fretting oxides, Shrink-fit, Rotating bending, Slip, crack growth, railway axles, shaft, strength, contact, initiation, stresses, friction, criteria, failure
URN: urn:nbn:se:kth:diva-18710DOI: 10.1016/j.ijfatigue.2009.04.019ISI: 000269271100012ScopusID: 2-s2.0-67650995965OAI: diva2:336757
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2010-12-10Bibliographically approved

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