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

In this paper, stress intensity factor (SIF) is calculated in a bar subjected to tensile loading, considering a circular inner crack that exhibits certain eccentricity in relation to the cylinder axis. The computation is made 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 inner crack. Results show how the SIF is higher at the point of the crack front closest to the bar surface and that an increase of crack eccentricity or of crack diameter raises the difference between the SIF values at the opposite crack points located at minimum and maximum distance from the bar surface. (C) 2022 The Authors. Published by Elsevier B.V.

Automated summary

In this paper, the stress intensity factor (SIF) in a bar subjected to tensile loading is calculated using the finite element method (FEM) and the J-integral. The results show that the SIF is higher at the point of the crack front closest to the bar surface, and an increase in crack eccentricity or diameter raises the difference between the SIF values at the opposite crack points.