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Robust evaluation of rail damage and track forces using representative load collectives

Björn Pålsson (Institutionen för tillämpad mekanik, Dynamik)
24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015; Graz; Austria; 17 August 2015 through 21 August 2015 p. 841-850. (2015)
[Konferensbidrag, refereegranskat]

This paper presents a method for robust evaluation of rail damage and lateral wheel–rail contact force spectra for rail traffic in curves. To this end the Manchester Benchmarks passenger vehicle model is used and scatter in vehicle, suspension and wheel profile properties is accounted for in the generation of load collectives that are used for rail damage assessment. Rail wear and RCF damage are evaluated at different curve radii for load collectives of different size using Archard’s wear law and the Tγ RCF damage model. Variance in damage estimates are investigated and it is shown that variance is reduced at smaller curve radii for both damage criteria. It is also found that the variance is larger for the RCF damage estimate than for the wear calculations.

Nyckelord: rail damage, vehicle track interaction, wear, rolling contact fatigue



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Denna post skapades 2016-01-13. Senast ändrad 2016-07-06.
CPL Pubid: 230556

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik

Ämnesområden

Transport
Fastkroppsmekanik
Farkostteknik

Chalmers infrastruktur