Abstract
In a previous paper, the present authors discussed the path-integral expression of the J-integral range, ΔJ, for short fatigue cracks emanating from notches, and showed that ΔJ evaluated based on the crack-opening level was an appropriate parameter for characterizing the near-tip stress and strain fields. In this study, finite-element simulations of fatigue crack growth from notches were conducted. The values of ΔJ evaluated by the path-integral were compared with those estimated by El Haddad's simple estimation formula proposed for short fatigue cracks at notches, and with those estimated by Dowling's formula for deep cracks and by Cho's formula for short cracks at notches. The ΔJ values evaluated by El Haddad's formula did not agree well with the values of ΔJ evaluated by the path-integral. In contrast, the ΔJ values evaluated by Dowling's formula based on the crack opening level agreed well with the ΔJ values evaluated by the path-integral.
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 callMore From: JSME international journal. Ser. A, Mechanics and material engineering
Disclaimer: 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.
