Simulation of rolling contact fatigue crack growth in rails
Research Project , 2014 – 2019

Rolling contact fatigue (RCF) cracks form on the surface of the rails due to compressive and frictional stresses induced on the rail at the wheel/rail contact patch. After a stage of low-angled growth, the cracks may propagate a) upwards, causing spalling of the rail material, b) downwards, causing complete local failure of the rail, c) along the initial low-angled plane of growth. The project aims in the development of criteria for capturing the direction and rate of crack propagation  in a general non-linear growth setting. The developed criteria along with already existing criteria from the literature are evaluated against known crack paths and rates from mixed-mode crack growth experiments. Criteria that perform best will be used in the development of a numerical tool for simulation of RCF crack evolution.   

Participants

Dimosthenis Floros (contact)

Doktorand vid Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Anders Ekberg

Biträdande professor vid Chalmers, Mechanics and Maritime Sciences, Dynamics

Fredrik Larsson

Professor vid Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Funding

CHARMEC

Funding Chalmers participation during 2014–2019

Swedish Transport Administration

Funding Chalmers participation during 2014–2015

Related Areas of Advance and Infrastructure

Transport

Areas of Advance

C3SE (Chalmers Centre for Computational Science and Engineering)

Infrastructure

More information

Latest update

2018-02-17