FICTITIOUS NOTCH ROUNDING CONCEPT APPLIED TO V-NOTCHES WITH END HOLES UNDER MODE I LOADING

摘要

Taking advantage of some recent closed form expressions for the stress distributions due to V-notches with end holes, the micro-structural support factor, s, to apply the Fictitious Notch Rounding (NFR) approach, is evaluated by adopting a normal stress criterion. The closed form expressions for the micro-structural support factor (s) as well as for the fictitiously enlarged end radius (rho_f), provided here for the first time, highlight the crucial role played by the notch opening angle for this notch configuration.