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Rolling contact fatigue prediction for rails and comparisons with test rig results

Elena Kabo (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Anders Ekberg (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Peter Torstensson (Institutionen för tillämpad mekanik, Dynamik) ; Tore Vernersson (Institutionen för tillämpad mekanik, Dynamik)
Proceedings of the Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit (0954-4097). Vol. 224 (2010), F4, p. 303-317.
[Artikel, refereegranskad vetenskaplig]

Tests in a full-scale roller rig, a full-scale linear test rig, and a twin-disc machine are numerically evaluated and compared in terms of rolling contact fatigue loading. From previously evaluated contact patch sizes, a Whler curve relationship is established and matched towards experimentally established fatigue lives. In addition, non-linear finite-element simulations are carried out. Key data needed for the numerical evaluations, as well as difficulties in translating experimental data to numerical models are highlighted. A key parameter here is the interfacial wheel-rail friction. Additional simulations were carried out to establish the latter. However, the conformal contact in the linear test rig makes such simulations very uncertain.

Nyckelord: rolling contact fatigue, rail-wheel contact, numerical prediction, comparison with test rig results, non-linear finite-element simulations, sliding contact, steel, failure, model, life, ARMEC Appl Mech, SE-14296 Gothenburg, Sweden., [Kabo, E., Vernersson, T.] Epsilon, Gothenburg, Sweden., [Ekberg, A.] Chalmers Ind, Gothenburg, Sweden.

Denna post skapades 2010-08-20. Senast ändrad 2017-03-21.
CPL Pubid: 124965


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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Material- och beräkningsmekanik (2005-2017)
Institutionen för tillämpad mekanik, Dynamik (1900-2017)


Teknisk mekanik

Chalmers infrastruktur