Review and synthesis of stress intensity factor (SIF) solutions for annular outer cracks in round bars under tension loading

The stress intensity factor (SIF) is computed in a circumferentially-cracked round bar (CCRB) under tensile load, considering that the resistant ligament is circular and exhibits certain eccentricity in relation to the cylinder axis. The computation was performed by means of the finite element method (FEM) using a three dimensional (3D) model and the J-integral, the analyzed variables being the diameter and the eccentricity of the circular ligament Results show that the SIF is higher at the deepest point of the crack and that an increase of eccentricity (in relation to the bar axis) raises the difference between the SIF values at the deepest and surface points of the crack. (C) 2022 The Authors. Published by Elsevier B.V.

Automated summary

The stress intensity factor (SIF) in a circumferentially-cracked round bar (CCRB) under tensile load is computed using the finite element method (FEM), considering the eccentricity of the resistant ligament. The results show that the SIF is higher at the deepest point of the crack and that an increase in eccentricity raises the difference between the SIF values at the deepest and surface points of the crack.