On estimation of residual stresses in rails using shake-down based method

Michał Pazdanowski

doi:10.2478/v10174-010-0019-9

Authors

Michał Pazdanowski Cracow University of Technology, Faculty of Civil Engineering, 24 Warszawska St., 31-155 Cracow, Poland Author

DOI:

https://doi.org/10.2478/v10174-010-0019-9

Keywords:

estimation of stresses, residual stresses, rails, analysis and modelling

Abstract

This paper presents a method, which may be used to determine residuaI stress distribution in bodies subject to cyclic loads. A mixed global/local version of the Meshless Finite Difference Method (MFDM) is used to devise a discrete computational formulation of a shakedown based residual stress calculation mechanical model for elastic-plastic bodies subject to cyclic loadings. Several 1D and 2D verification/vaIidation tests are presented, including thorough discussion of results and conclusions regarding the details of computational model. The method developed is applied to determine residual stress distribution in a railroad rail subject to simulated contact load.

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