Evaluation of mixed-mode crack growth criteria under rolling contact conditions
Paper in proceeding, 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.

FE-simulation

Elastic-plastic fracture mechanics

Twin-disc specimen

Linear elastic fracture mechanics

Rolling contact fatigue

Shear-mode crack growth.

Author

Dimosthenis Floros

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Anders Ekberg

Chalmers, Mechanics and Maritime Sciences (M2), 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
978-946186963-0 (ISBN)

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

Areas of Advance

Transport

Subject Categories (SSIF 2011)

Applied Mechanics

Infrastructure Engineering

Other Materials Engineering

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7/1/2025 5