Assessment of uncertainties in life prediction of fatigue crack initiation and propagation in welded rails
作者： B. Lennart Josefson , Jonas W. Ringsberg
DOI: 10.1016/J.IJFATIGUE.2009.03.024
关键词:
摘要: The risk for initiation of fatigue cracks in the rail head and web weld zone a is studied. interaction between welding residual stress field caused by service loads simulated nonlinear finite element (FE) analysis where distribution (shape) magnitude, load magnitude material parameters used life estimation are varied. assessed using shear-stress-based multiaxial criterion proposed Dang Van, propagation carried out Paris-type crack growth law. A discussion presented interpretation Van to assess stress–response cycles with low shear amplitudes high hydrostatic levels. In addition, accuracy assessment evaluated statistical uncertainty variances according Gauss approximation formula web, respectively, enhanced due stress, level dominates assessments.
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Luis Baeza, Jonas Ringsberg, Jens C. O. Nielsen, Influence of railway wheel flat impact on crack growth in rails Proceedings of the Eighth International Heavy Haul Conference (IHHC8) in Rio de Janeiro, Brazil, June 14-16, 2005. pp. 1- 10 ,(2005)
J. H. Beynon, Engineering against fatigue A.A. Balkema. ,(1999)
J. W. Ringsber, B. L. Josefson, Finite element analyses of rolling contact fatigue crack initiation in railheads Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. ,vol. 215, pp. 243- 259 ,(2001) , 10.1243/0954409011531558
H DESIMONE, S BERETTA, Mechanisms of mixed mode fatigue crack propagation at rail butt-welds International Journal of Fatigue. ,vol. 28, pp. 635- 642 ,(2006) , 10.1016/J.IJFATIGUE.2005.07.044
Uwe Zerbst, Katrin Mädler, Hartmut Hintze, Fracture mechanics in railway applications––an overview Engineering Fracture Mechanics. ,vol. 72, pp. 163- 194 ,(2005) , 10.1016/J.ENGFRACMECH.2003.11.010
P.J. Mutton, E.F. Alvarez, Failure modes in aluminothermic rail welds under high axle load conditions Engineering Failure Analysis. ,vol. 11, pp. 151- 166 ,(2004) , 10.1016/J.ENGFAILANAL.2003.05.003
A. Skyttebol, B.L. Josefson, J.W. Ringsberg, Fatigue crack growth in a welded rail under the influence of residual stresses Engineering Fracture Mechanics. ,vol. 72, pp. 271- 285 ,(2005) , 10.1016/J.ENGFRACMECH.2004.04.009
J. W. Ringsberg, H Bjarnehed, A Johansson, B. L. Josefson, Rolling contact fatigue of rails-finite element modelling of residual stresses, strains and crack initiation Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. ,vol. 214, pp. 7- 19 ,(2000) , 10.1243/0954409001531207
H. Desimone, A. Bernasconi, S. Beretta, On the application of Dang Van criterion to rolling contact fatigue Wear. ,vol. 260, pp. 567- 572 ,(2006) , 10.1016/J.WEAR.2005.03.007
L SUSMEL, R TOVO, P LAZZARIN, The mean stress effect on the high-cycle fatigue strength from a multiaxial fatigue point of view International Journal of Fatigue. ,vol. 27, pp. 928- 943 ,(2005) , 10.1016/J.IJFATIGUE.2004.11.012