A review of T-stress calculation methods in fracture mechanics computation

Bouledroua, Omar; Hadj Meliani, Mohamed; Pluvinage, Guy

Revue Nature et Technologie
Volume 8, Numéro 2, Pages 21-31
2016-06-30

A Review Of T-stress Calculation Methods In Fracture Mechanics Computation

Authors : Bouledroua Omar . Hadj Meliani Mohamed . Pluvinage Guy .

Abstract

An overview of past research on T-stress is presented in this paper, we provides some critical review of the history and state of two elastic fracture mechanics and relationship to crack paths stability. The importance of the global approach with two parameters (K-T) or (K-A3) in the analysis of the linear elastic fracture mechanics, based on the effect of confinement according to the work of Williams, is presented in the field of CT specimen in mode I for the API X52 steel. The objective is to propose a numerical study, defining the T-stress, by applying the finite element method, in 2D, using the software ANSYS 15.0. Thereafter, we propose the method inspired from the volumetric approach developed by Pluvinage, this method is based on the determination of the effective stress Tef over an effective distance Xef ahead of the crack tip. Finally, it concludes with a discussion critical of methods of calculated the T-stress.