Evaluation of mixed-mode crack growth criteria under rolling contact conditions
Paper in proceedings, 2018

Fatigue crack growth direction criteria are evaluated towards a twin-disc experiment from the literature. The experiment is modelled numerically at different crack lengths. Based on numerically evaluated stresses, strains and displacements, a range of crack growth direction criteria from the literature are evaluated and compared to the experimentally found crack growth direction. In the considered experiment, the growth is essentially shear driven. Of the evaluated criteria employed to a linear elastic analysis, the Maximum Shear Stress (MSS) and Vector Crack-Tip Displacement (VCTD) criteria are found to be able to capture the experimentally found crack growth direction throughout the fatigue life.

Elastic-plastic fracture mechanics

Linear elastic fracture mechanics

Shear-mode crack growth.

FE-simulation

Rolling contact fatigue

Twin-disc specimen

Author

Dimosthenis Floros

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Anders Ekberg

Chalmers, Mechanics and Maritime Sciences, Dynamics

Fredrik Larsson

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018

253-260

11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2018
Delft, Netherlands,

Subject Categories

Applied Mechanics

Infrastructure Engineering

Other Materials Engineering

More information

Latest update

1/24/2019