Abstract
In this paper the driving force for the cyclic growth of small subsurface cracks subjected to repeated rolling contact is evaluated. Values of the mode II stress intensity range ΔK II are derived from the variations in the stress intensity factor K II with respect to the position of the contact for rolling in the absence of shear tractions and friction on the contact surface. The calculations take into account (i) the elastic contact stresses, (ii) the friction resisting the mode II sliding of the crack faces and (iii) the residual circumferential tensile and compressive stresses produced by plastic deformation close to the rim. The values of K II and ΔK II are evaluated as a function of the ratio of the peak contact pressure to the yield strength, the length of the crack, the depth of the crack below the surface, the inclination of the crack with respect to the rim surface and the coefficient of friction for the crack faces. Predictions of the cyclic crack growth rate, component life and the critical defect size, based on the ΔK II values, are illustrated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
