Abstract
The present paper discusses the estimation of the stress state of Rolling Contact Fatigue (RCF) cracks according to linear elastic fracture mechanics, by making use of the weight function to obtain the Stress Intensity Factors. The weight functions are considered for both the mode I and mode II Stress Intensity Factor and are based on existing formulations for an inclined edge crack in a finite width plate for which Green's functions are derived by means of a numerical methods. The Stress Intensity Factors been predicted for a side crack having an inclination angle typical for RCF defects in a plate of finite width supported by an elastic foundation and subjected to a moving wheel load, modelled as a patch load. The Stress Intensity Factors are obtained by superimposing the bending moment due to the moving load, and local stresses due to normal pressure and tangential tractions resulting from the contact with the wheel. These local stresses are determined using theoretical solutions partially available in the literature. The Stress Intensity Factors obtained are compared with the results of numerical models presented in the literature regarding the RCF crack growth.
Original language | English |
---|---|
Pages (from-to) | 9-19 |
Number of pages | 11 |
Journal | Procedia Structural Integrity |
Volume | 39 |
DOIs | |
Publication status | Published - 2022 |
Event | 7th International Conference on Crack Paths, CP 2021 - Virtual, Italy Duration: 21 Sept 2021 → 24 Sept 2021 |
Bibliographical note
Funding Information:Fig. 2. Mechanical scheme of the cracked beam supported by the elastic foundation under a moving contact load.
Funding Information:
Fig. 3. Mechanical scheme of the cracked beam supported by the elastic foundation under a moving contact load.
Funding Information:
Beam supported by an elastic foundation
Keywords
- LEFM
- RCF cracks
- Stress Intensity Factors
- Weight functions