Fretting fatigue of a shrink-fit pin subjected to rotating bending: Experiments and simulations
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
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.
Fretting fatigue, Fretting oxides, Shrink-fit, Rotating bending, Slip, crack growth, railway axles, shaft, strength, contact, initiation, stresses, friction, criteria, failure
IdentifiersURN: urn:nbn:se:kth:diva-18710DOI: 10.1016/j.ijfatigue.2009.04.019ISI: 000269271100012ScopusID: 2-s2.0-67650995965OAI: oai:DiVA.org:kth-18710DiVA: diva2:336757
QC 201005252010-08-052010-08-052010-12-10Bibliographically approved