TY - JOUR
T1 - On the growth of rolling contact fatigue cracks using weight functions
AU - Leonetti, Davide
AU - Vantadori, Sabrina
N1 - 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
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
KW - LEFM
KW - RCF cracks
KW - Stress Intensity Factors
KW - Weight functions
UR - http://www.scopus.com/inward/record.url?scp=85129393960&partnerID=8YFLogxK
U2 - 10.1016/j.prostr.2022.03.067
DO - 10.1016/j.prostr.2022.03.067
M3 - Conference article
AN - SCOPUS:85129393960
SN - 2452-3216
VL - 39
SP - 9
EP - 19
JO - Procedia Structural Integrity
JF - Procedia Structural Integrity
T2 - 7th International Conference on Crack Paths, CP 2021
Y2 - 21 September 2021 through 24 September 2021
ER -