| Parametric study on the fatigue life of railways under rolling contact fatigue by three-dimensional numerical analysis
Doo-Ho Cho, Hwan Seong, Young-Jin Kim, Jae-Boong Choi*, Hyun-Kyu Jun, Jung-Won Seo and Dae-Sang Kim
The Journal of Mechanical Science and Technology, vol. 26, no. 2, pp.359-365, 2012
Abstract : The current paper presents the results of parametric analyses on the stress intensity factor (SIF) of railways with inclined cracks under
rolling contact fatigue (RCF). A 3D finite element (FE) model was proposed to demonstrate the shear mechanism in RCF. The feasibility
of the suggested numerical model was verified through the SIF (K) obtained from advanced 3D FE analysis compared with existing 2D
FE results. Based on the series of FE analyses, the sensitivity analysis on the cracked depth, surface/crack friction coefficients, and inclined
angle, which mainly affected SIF history at the cracked tip, was examined. SIF distributions for various locations of the wheel
along the cracked tip were also presented.
Keyword : Parametric analysis; Rolling contact fatigue; Slanted surface crack; Stress intensity factor range; 3D FE analysis |
