Shakedown of Rail Corrugations
A model of the elastic-plastic behaviour of a rail under moving and cyclically changing loads is proposed. Simple analytical expressions enable us to estimate the changes of the limit shear stress and residual stresses under the running rail surface after repeated passages of a wheel. It is shown that magnitudes of local hardening and residual stresses stabilize after a few passages of the load. The places of local hardening and peaks of residual stresses do not move along rails and they correspond to the positions of rail corrugations.
KeywordsResidual Stress Plastic Zone Local Hardening Critical Shear Stress Plastic Yield
Unable to display preview. Download preview PDF.
- 1980 Mair, R. L, “Natural frequency of rail tracks and its relationship to rail corrugation”, in Rail Research Papers; Compendium of BHP Steel International Group, vol. 1, Melbourne, 89–94.Google Scholar
- 1980 Mair, R. I. & Groenhout, R., “The growth of transverse fatigue defects in head of railway rails”, in Rail Research Papers; Compendium of BHP Steel International Group, vol. 1, Melbourne, 170–186.Google Scholar
- 1985 Johnson, K. L., Contact Mechanics, Cambridge University Press, 1985Google Scholar
- 1990 Brzozowski, M., Bogacz, R. & Popp, K., “Zur Reibungsmodellierung beim Rollkontakt, ZAMM 70, 6, T 678–T 679.Google Scholar
- 1992 Bogacz, R., “On residual stresses in rails and wheel/rail interaction” in Residual Stresses in Rails, vol. 2, Kluwer Academic Publishers, 87–100.Google Scholar
- 1994 Gambin, W., “Simplified model of rail corrugations formation”, Engng. Trans. 42, 1-2, 123–143.Google Scholar